./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-?-6c24879 [2022-07-12 11:42:53,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:42:53,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:42:53,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:42:53,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:42:53,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:42:53,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:42:53,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:42:53,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:42:53,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:42:53,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:42:53,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:42:53,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:42:53,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:42:53,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:42:53,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:42:53,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:42:53,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:42:53,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:42:53,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:42:53,135 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:42:53,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:42:53,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:42:53,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:42:53,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:42:53,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:42:53,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:42:53,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:42:53,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:42:53,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:42:53,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:42:53,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:42:53,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:42:53,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:42:53,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:42:53,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:42:53,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:42:53,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:42:53,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:42:53,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:42:53,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:42:53,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:42:53,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:42:53,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:42:53,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:42:53,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:42:53,176 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:42:53,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:42:53,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:42:53,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:42:53,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:42:53,178 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:42:53,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:42:53,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:42:53,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:42:53,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:42:53,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:42:53,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:42:53,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:42:53,180 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:42:53,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:42:53,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:42:53,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:42:53,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:42:53,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:42:53,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:42:53,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:42:53,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:42:53,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:42:53,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:42:53,182 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:42:53,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:42:53,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:42:53,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efa92cfb99ddf37faa5e05d118bbca018e76e6d1ade87f7958feff968c230276 [2022-07-12 11:42:53,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:42:53,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:42:53,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:42:53,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:42:53,417 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:42:53,418 INFO L432 ainManager$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 [2022-07-12 11:42:53,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d8eeb061/15a142ae56734791888177d18dbd1af2/FLAG78c50e41e [2022-07-12 11:42:54,217 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:42:54,218 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 [2022-07-12 11:42:54,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d8eeb061/15a142ae56734791888177d18dbd1af2/FLAG78c50e41e [2022-07-12 11:42:54,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d8eeb061/15a142ae56734791888177d18dbd1af2 [2022-07-12 11:42:54,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:42:54,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:42:54,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:42:54,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:42:54,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:42:54,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:42:54" (1/1) ... [2022-07-12 11:42:54,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177d9de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:42:54, skipping insertion in model container [2022-07-12 11:42:54,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:42:54" (1/1) ... [2022-07-12 11:42:54,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:42:54,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:42:55,724 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] [2022-07-12 11:42:55,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:42:55,842 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:42:56,162 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] [2022-07-12 11:42:56,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:42:56,225 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:42:56,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:42:56 WrapperNode [2022-07-12 11:42:56,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:42:56,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:42:56,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:42:56,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:42:56,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:42:56" (1/1) ... [2022-07-12 11:42:56,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:42:56" (1/1) ... [2022-07-12 11:42:56,434 INFO L137 Inliner]: procedures = 167, calls = 2343, calls flagged for inlining = 49, calls inlined = 38, statements flattened = 5030 [2022-07-12 11:42:56,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:42:56,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:42:56,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:42:56,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:42:56,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:42:56" (1/1) ... [2022-07-12 11:42:56,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:42:56" (1/1) ... [2022-07-12 11:42:56,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:42:56" (1/1) ... [2022-07-12 11:42:56,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:42:56" (1/1) ... [2022-07-12 11:42:56,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:42:56" (1/1) ... [2022-07-12 11:42:56,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:42:56" (1/1) ... [2022-07-12 11:42:56,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:42:56" (1/1) ... [2022-07-12 11:42:56,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:42:56,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:42:56,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:42:56,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:42:56,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:42:56" (1/1) ... [2022-07-12 11:42:56,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:42:56,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:42:56,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 11:42:56,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 11:42:56,734 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_remove [2022-07-12 11:42:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_remove [2022-07-12 11:42:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-12 11:42:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-12 11:42:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure dntv_live_dvbt_demod_init [2022-07-12 11:42:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure dntv_live_dvbt_demod_init [2022-07-12 11:42:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-12 11:42:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-12 11:42:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_advise_release [2022-07-12 11:42:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_advise_release [2022-07-12 11:42:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:42:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-07-12 11:42:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-07-12 11:42:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-12 11:42:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-12 11:42:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure stv0299_writereg [2022-07-12 11:42:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure stv0299_writereg [2022-07-12 11:42:56,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 11:42:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 11:42:56,737 INFO L130 BoogieDeclarations]: Found specification of procedure attach_xc3028 [2022-07-12 11:42:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_xc3028 [2022-07-12 11:42:56,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 11:42:56,737 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 11:42:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 11:42:56,737 INFO L130 BoogieDeclarations]: Found specification of procedure stb6100_get_freq [2022-07-12 11:42:56,738 INFO L138 BoogieDeclarations]: Found implementation of procedure stb6100_get_freq [2022-07-12 11:42:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 11:42:56,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 11:42:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure dvico_fusionhdtv_demod_init [2022-07-12 11:42:56,738 INFO L138 BoogieDeclarations]: Found implementation of procedure dvico_fusionhdtv_demod_init [2022-07-12 11:42:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure stv0900_set_ts_param [2022-07-12 11:42:56,738 INFO L138 BoogieDeclarations]: Found implementation of procedure stv0900_set_ts_param [2022-07-12 11:42:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2022-07-12 11:42:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2022-07-12 11:42:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure samsung_smt_7020_tuner_set_params [2022-07-12 11:42:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure samsung_smt_7020_tuner_set_params [2022-07-12 11:42:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2022-07-12 11:42:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2022-07-12 11:42:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_dvb_gate_ctrl [2022-07-12 11:42:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_dvb_gate_ctrl [2022-07-12 11:42:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure cx24116_set_ts_param [2022-07-12 11:42:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure cx24116_set_ts_param [2022-07-12 11:42:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_buf_prepare [2022-07-12 11:42:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_buf_prepare [2022-07-12 11:42:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 11:42:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_advise_acquire [2022-07-12 11:42:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_advise_acquire [2022-07-12 11:42:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-12 11:42:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-12 11:42:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-12 11:42:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-12 11:42:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_dvb_bus_ctrl [2022-07-12 11:42:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_dvb_bus_ctrl [2022-07-12 11:42:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:42:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-07-12 11:42:56,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-07-12 11:42:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-12 11:42:56,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-12 11:42:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:42:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 11:42:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2022-07-12 11:42:56,744 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2022-07-12 11:42:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure nxt200x_set_ts_param [2022-07-12 11:42:56,744 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt200x_set_ts_param [2022-07-12 11:42:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-12 11:42:56,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-12 11:42:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 11:42:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2022-07-12 11:42:56,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2022-07-12 11:42:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-12 11:42:56,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-12 11:42:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure or51132_set_ts_param [2022-07-12 11:42:56,745 INFO L138 BoogieDeclarations]: Found implementation of procedure or51132_set_ts_param [2022-07-12 11:42:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_probe [2022-07-12 11:42:56,745 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_probe [2022-07-12 11:42:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dvb_get_frontend [2022-07-12 11:42:56,746 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dvb_get_frontend [2022-07-12 11:42:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure cx24116_reset_device [2022-07-12 11:42:56,746 INFO L138 BoogieDeclarations]: Found implementation of procedure cx24116_reset_device [2022-07-12 11:42:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~$Pointer$ [2022-07-12 11:42:56,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~$Pointer$ [2022-07-12 11:42:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:42:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure dvico_dual_demod_init [2022-07-12 11:42:56,746 INFO L138 BoogieDeclarations]: Found implementation of procedure dvico_dual_demod_init [2022-07-12 11:42:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 11:42:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure dntv_live_dvbt_pro_demod_init [2022-07-12 11:42:56,747 INFO L138 BoogieDeclarations]: Found implementation of procedure dntv_live_dvbt_pro_demod_init [2022-07-12 11:42:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure stb6100_get_bandw [2022-07-12 11:42:56,747 INFO L138 BoogieDeclarations]: Found implementation of procedure stb6100_get_bandw [2022-07-12 11:42:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure cx24123_set_ts_param [2022-07-12 11:42:56,748 INFO L138 BoogieDeclarations]: Found implementation of procedure cx24123_set_ts_param [2022-07-12 11:42:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-12 11:42:56,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-12 11:42:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-07-12 11:42:56,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-07-12 11:42:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure lgdt330x_set_ts_param [2022-07-12 11:42:56,749 INFO L138 BoogieDeclarations]: Found implementation of procedure lgdt330x_set_ts_param [2022-07-12 11:42:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register [2022-07-12 11:42:56,749 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register [2022-07-12 11:42:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-07-12 11:42:56,750 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-07-12 11:42:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~~u8~0~X~~u8~0~TO~$Pointer$ [2022-07-12 11:42:56,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~~u8~0~X~~u8~0~TO~$Pointer$ [2022-07-12 11:42:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dvb_dealloc_frontends [2022-07-12 11:42:56,750 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dvb_dealloc_frontends [2022-07-12 11:42:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-07-12 11:42:56,750 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-07-12 11:42:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:42:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-12 11:42:56,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-12 11:42:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:42:56,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:42:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-12 11:42:56,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-12 11:42:57,554 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:42:57,556 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:43:03,815 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:43:03,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:43:03,834 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 11:43:03,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:43:03 BoogieIcfgContainer [2022-07-12 11:43:03,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:43:03,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:43:03,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:43:03,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:43:03,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:42:54" (1/3) ... [2022-07-12 11:43:03,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75da3518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:43:03, skipping insertion in model container [2022-07-12 11:43:03,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:42:56" (2/3) ... [2022-07-12 11:43:03,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75da3518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:43:03, skipping insertion in model container [2022-07-12 11:43:03,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:43:03" (3/3) ... [2022-07-12 11:43:03,850 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i [2022-07-12 11:43:03,859 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:43:03,859 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:43:03,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:43:03,945 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@5128ecd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@30198fab [2022-07-12 11:43:03,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:43:03,954 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) [2022-07-12 11:43:03,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-12 11:43:03,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:03,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:43:03,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:03,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:03,966 INFO L85 PathProgramCache]: Analyzing trace with hash 983380094, now seen corresponding path program 1 times [2022-07-12 11:43:03,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:03,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997725405] [2022-07-12 11:43:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:03,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:04,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:43:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 11:43:04,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:04,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997725405] [2022-07-12 11:43:04,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997725405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:04,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:04,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:43:04,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079945979] [2022-07-12 11:43:04,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:04,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:43:04,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:04,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:43:04,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:43:04,489 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) [2022-07-12 11:43:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:04,758 INFO L93 Difference]: Finished difference Result 5574 states and 8588 transitions. [2022-07-12 11:43:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:43:04,760 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 [2022-07-12 11:43:04,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:04,785 INFO L225 Difference]: With dead ends: 5574 [2022-07-12 11:43:04,786 INFO L226 Difference]: Without dead ends: 3640 [2022-07-12 11:43:04,796 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 [2022-07-12 11:43:04,798 INFO L413 NwaCegarLoop]: 3494 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, 6158 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 [2022-07-12 11:43:04,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2902 Valid, 6158 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:43:04,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-07-12 11:43:05,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3637. [2022-07-12 11:43:05,032 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) [2022-07-12 11:43:05,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3637 states to 3637 states and 5575 transitions. [2022-07-12 11:43:05,048 INFO L78 Accepts]: Start accepts. Automaton has 3637 states and 5575 transitions. Word has length 14 [2022-07-12 11:43:05,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:05,048 INFO L495 AbstractCegarLoop]: Abstraction has 3637 states and 5575 transitions. [2022-07-12 11:43:05,049 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) [2022-07-12 11:43:05,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3637 states and 5575 transitions. [2022-07-12 11:43:05,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-12 11:43:05,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:05,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:43:05,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 11:43:05,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash 418913757, now seen corresponding path program 1 times [2022-07-12 11:43:05,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:05,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218912427] [2022-07-12 11:43:05,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:05,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:05,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:43:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 11:43:05,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:05,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218912427] [2022-07-12 11:43:05,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218912427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:05,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:05,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:43:05,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986634429] [2022-07-12 11:43:05,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:05,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:43:05,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:05,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:43:05,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:43:05,218 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) [2022-07-12 11:43:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:05,306 INFO L93 Difference]: Finished difference Result 3639 states and 5576 transitions. [2022-07-12 11:43:05,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:43:05,307 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 [2022-07-12 11:43:05,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:05,320 INFO L225 Difference]: With dead ends: 3639 [2022-07-12 11:43:05,320 INFO L226 Difference]: Without dead ends: 3636 [2022-07-12 11:43:05,322 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 [2022-07-12 11:43:05,322 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 [2022-07-12 11:43:05,323 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] [2022-07-12 11:43:05,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2022-07-12 11:43:05,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3636. [2022-07-12 11:43:05,522 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) [2022-07-12 11:43:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 5573 transitions. [2022-07-12 11:43:05,538 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 5573 transitions. Word has length 15 [2022-07-12 11:43:05,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:05,538 INFO L495 AbstractCegarLoop]: Abstraction has 3636 states and 5573 transitions. [2022-07-12 11:43:05,538 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) [2022-07-12 11:43:05,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 5573 transitions. [2022-07-12 11:43:05,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-12 11:43:05,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:05,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:43:05,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 11:43:05,540 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:05,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:05,540 INFO L85 PathProgramCache]: Analyzing trace with hash 100331361, now seen corresponding path program 1 times [2022-07-12 11:43:05,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:05,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496264509] [2022-07-12 11:43:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:05,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:05,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:43:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 11:43:05,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:05,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496264509] [2022-07-12 11:43:05,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496264509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:05,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:05,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:43:05,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725999778] [2022-07-12 11:43:05,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:05,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:43:05,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:05,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:43:05,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:43:05,732 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) [2022-07-12 11:43:05,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:05,832 INFO L93 Difference]: Finished difference Result 3638 states and 5574 transitions. [2022-07-12 11:43:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:43:05,833 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 [2022-07-12 11:43:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:05,849 INFO L225 Difference]: With dead ends: 3638 [2022-07-12 11:43:05,849 INFO L226 Difference]: Without dead ends: 3635 [2022-07-12 11:43:05,854 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 [2022-07-12 11:43:05,858 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 [2022-07-12 11:43:05,859 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] [2022-07-12 11:43:05,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2022-07-12 11:43:05,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3635. [2022-07-12 11:43:05,986 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) [2022-07-12 11:43:05,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5571 transitions. [2022-07-12 11:43:06,000 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5571 transitions. Word has length 16 [2022-07-12 11:43:06,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:06,000 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5571 transitions. [2022-07-12 11:43:06,000 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) [2022-07-12 11:43:06,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5571 transitions. [2022-07-12 11:43:06,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-12 11:43:06,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:06,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:43:06,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 11:43:06,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:06,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:06,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1185783456, now seen corresponding path program 1 times [2022-07-12 11:43:06,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:06,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991237570] [2022-07-12 11:43:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:06,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:06,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:43:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 11:43:06,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:06,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991237570] [2022-07-12 11:43:06,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991237570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:06,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:06,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:43:06,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284398149] [2022-07-12 11:43:06,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:06,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:43:06,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:06,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:43:06,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:43:06,201 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) [2022-07-12 11:43:06,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:06,292 INFO L93 Difference]: Finished difference Result 3637 states and 5572 transitions. [2022-07-12 11:43:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:43:06,292 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 [2022-07-12 11:43:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:06,308 INFO L225 Difference]: With dead ends: 3637 [2022-07-12 11:43:06,308 INFO L226 Difference]: Without dead ends: 3634 [2022-07-12 11:43:06,311 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 [2022-07-12 11:43:06,311 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 [2022-07-12 11:43:06,312 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] [2022-07-12 11:43:06,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2022-07-12 11:43:06,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3634. [2022-07-12 11:43:06,442 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) [2022-07-12 11:43:06,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5569 transitions. [2022-07-12 11:43:06,455 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5569 transitions. Word has length 17 [2022-07-12 11:43:06,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:06,456 INFO L495 AbstractCegarLoop]: Abstraction has 3634 states and 5569 transitions. [2022-07-12 11:43:06,456 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) [2022-07-12 11:43:06,456 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5569 transitions. [2022-07-12 11:43:06,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-12 11:43:06,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:06,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:43:06,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 11:43:06,457 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:06,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:06,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1894335044, now seen corresponding path program 1 times [2022-07-12 11:43:06,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:06,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496308625] [2022-07-12 11:43:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:06,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:06,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:43:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 11:43:06,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:06,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496308625] [2022-07-12 11:43:06,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496308625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:06,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:06,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:43:06,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634397154] [2022-07-12 11:43:06,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:06,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:43:06,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:06,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:43:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:43:06,595 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) [2022-07-12 11:43:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:06,687 INFO L93 Difference]: Finished difference Result 3636 states and 5570 transitions. [2022-07-12 11:43:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:43:06,691 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 [2022-07-12 11:43:06,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:06,707 INFO L225 Difference]: With dead ends: 3636 [2022-07-12 11:43:06,708 INFO L226 Difference]: Without dead ends: 3623 [2022-07-12 11:43:06,710 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 [2022-07-12 11:43:06,711 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 [2022-07-12 11:43:06,711 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] [2022-07-12 11:43:06,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2022-07-12 11:43:06,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3623. [2022-07-12 11:43:06,882 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) [2022-07-12 11:43:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5554 transitions. [2022-07-12 11:43:06,894 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5554 transitions. Word has length 18 [2022-07-12 11:43:06,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:06,894 INFO L495 AbstractCegarLoop]: Abstraction has 3623 states and 5554 transitions. [2022-07-12 11:43:06,894 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) [2022-07-12 11:43:06,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5554 transitions. [2022-07-12 11:43:06,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-12 11:43:06,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:06,903 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] [2022-07-12 11:43:06,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 11:43:06,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:06,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:06,904 INFO L85 PathProgramCache]: Analyzing trace with hash -400911686, now seen corresponding path program 1 times [2022-07-12 11:43:06,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:06,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736098476] [2022-07-12 11:43:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:06,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:07,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:43:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:07,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:43:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:07,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:07,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:43:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:07,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:43:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:07,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:07,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 11:43:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:07,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:43:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 11:43:07,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:07,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736098476] [2022-07-12 11:43:07,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736098476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:07,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:07,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:43:07,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11791567] [2022-07-12 11:43:07,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:07,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:43:07,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:07,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:43:07,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:43:07,215 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) [2022-07-12 11:43:09,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:43:11,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:43:12,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:43:15,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:43:17,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:17,653 INFO L93 Difference]: Finished difference Result 7333 states and 11735 transitions. [2022-07-12 11:43:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:43:17,661 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 [2022-07-12 11:43:17,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:17,678 INFO L225 Difference]: With dead ends: 7333 [2022-07-12 11:43:17,679 INFO L226 Difference]: Without dead ends: 3718 [2022-07-12 11:43:17,690 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 [2022-07-12 11:43:17,690 INFO L413 NwaCegarLoop]: 2972 mSDtfsCounter, 297 mSDsluCounter, 6652 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 9624 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:43:17,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 9624 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-07-12 11:43:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2022-07-12 11:43:17,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3630. [2022-07-12 11:43:17,949 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) [2022-07-12 11:43:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 5561 transitions. [2022-07-12 11:43:17,966 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 5561 transitions. Word has length 137 [2022-07-12 11:43:17,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:17,969 INFO L495 AbstractCegarLoop]: Abstraction has 3630 states and 5561 transitions. [2022-07-12 11:43:17,970 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) [2022-07-12 11:43:17,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 5561 transitions. [2022-07-12 11:43:17,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-12 11:43:17,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:17,977 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] [2022-07-12 11:43:17,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 11:43:17,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:17,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:17,979 INFO L85 PathProgramCache]: Analyzing trace with hash 409251297, now seen corresponding path program 1 times [2022-07-12 11:43:17,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:17,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113387963] [2022-07-12 11:43:17,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:17,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:43:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:43:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:43:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:43:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 11:43:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 11:43:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 11:43:18,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:18,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113387963] [2022-07-12 11:43:18,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113387963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:18,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:18,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:43:18,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999118614] [2022-07-12 11:43:18,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:18,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:43:18,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:18,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:43:18,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:43:18,292 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) [2022-07-12 11:43:20,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:43:21,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:43:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:26,446 INFO L93 Difference]: Finished difference Result 7327 states and 11730 transitions. [2022-07-12 11:43:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:43:26,447 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 [2022-07-12 11:43:26,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:26,474 INFO L225 Difference]: With dead ends: 7327 [2022-07-12 11:43:26,477 INFO L226 Difference]: Without dead ends: 3705 [2022-07-12 11:43:26,560 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 [2022-07-12 11:43:26,564 INFO L413 NwaCegarLoop]: 2905 mSDtfsCounter, 272 mSDsluCounter, 4010 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 6915 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:43:26,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 6915 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-12 11:43:26,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2022-07-12 11:43:26,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3632. [2022-07-12 11:43:26,824 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) [2022-07-12 11:43:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 5563 transitions. [2022-07-12 11:43:26,834 INFO L78 Accepts]: Start accepts. Automaton has 3632 states and 5563 transitions. Word has length 139 [2022-07-12 11:43:26,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:26,836 INFO L495 AbstractCegarLoop]: Abstraction has 3632 states and 5563 transitions. [2022-07-12 11:43:26,836 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) [2022-07-12 11:43:26,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3632 states and 5563 transitions. [2022-07-12 11:43:26,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 11:43:26,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:26,842 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] [2022-07-12 11:43:26,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 11:43:26,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:26,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:26,843 INFO L85 PathProgramCache]: Analyzing trace with hash -102740549, now seen corresponding path program 1 times [2022-07-12 11:43:26,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:26,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072512296] [2022-07-12 11:43:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:26,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:27,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:43:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:27,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:43:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:27,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:43:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:27,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:43:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:27,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:27,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 11:43:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:27,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:43:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 11:43:27,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:27,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072512296] [2022-07-12 11:43:27,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072512296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:27,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:27,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:43:27,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417276297] [2022-07-12 11:43:27,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:27,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:43:27,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:27,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:43:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:43:27,205 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) [2022-07-12 11:43:28,999 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:43:30,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:43:31,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:43:35,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:43:40,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:43:41,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:41,562 INFO L93 Difference]: Finished difference Result 5648 states and 9037 transitions. [2022-07-12 11:43:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:43:41,562 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 [2022-07-12 11:43:41,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:41,572 INFO L225 Difference]: With dead ends: 5648 [2022-07-12 11:43:41,572 INFO L226 Difference]: Without dead ends: 3695 [2022-07-12 11:43:41,577 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 [2022-07-12 11:43:41,578 INFO L413 NwaCegarLoop]: 5554 mSDtfsCounter, 2609 mSDsluCounter, 5493 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 791 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3048 SdHoareTripleChecker+Valid, 11047 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:43:41,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3048 Valid, 11047 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 1681 Invalid, 1 Unknown, 0 Unchecked, 14.2s Time] [2022-07-12 11:43:41,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2022-07-12 11:43:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 3620. [2022-07-12 11:43:41,744 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) [2022-07-12 11:43:41,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 5531 transitions. [2022-07-12 11:43:41,753 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 5531 transitions. Word has length 141 [2022-07-12 11:43:41,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:41,754 INFO L495 AbstractCegarLoop]: Abstraction has 3620 states and 5531 transitions. [2022-07-12 11:43:41,755 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) [2022-07-12 11:43:41,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 5531 transitions. [2022-07-12 11:43:41,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-12 11:43:41,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:41,764 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] [2022-07-12 11:43:41,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 11:43:41,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:41,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash -741859133, now seen corresponding path program 1 times [2022-07-12 11:43:41,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:41,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023506209] [2022-07-12 11:43:41,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:41,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:43:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:43:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:43:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:43:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 11:43:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:43:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:43:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 11:43:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 11:43:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-12 11:43:42,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:42,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023506209] [2022-07-12 11:43:42,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023506209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:42,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:42,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 11:43:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008423732] [2022-07-12 11:43:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:42,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:43:42,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:43:42,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:43:42,252 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) [2022-07-12 11:43:46,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:43:55,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:43:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:56,187 INFO L93 Difference]: Finished difference Result 7442 states and 11802 transitions. [2022-07-12 11:43:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 11:43:56,188 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 [2022-07-12 11:43:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:56,201 INFO L225 Difference]: With dead ends: 7442 [2022-07-12 11:43:56,201 INFO L226 Difference]: Without dead ends: 3830 [2022-07-12 11:43:56,210 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 [2022-07-12 11:43:56,211 INFO L413 NwaCegarLoop]: 2948 mSDtfsCounter, 456 mSDsluCounter, 11598 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 669 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 14546 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-07-12 11:43:56,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 14546 Invalid, 3467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 2797 Invalid, 1 Unknown, 0 Unchecked, 13.7s Time] [2022-07-12 11:43:56,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2022-07-12 11:43:56,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 3722. [2022-07-12 11:43:56,402 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) [2022-07-12 11:43:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5676 transitions. [2022-07-12 11:43:56,412 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5676 transitions. Word has length 228 [2022-07-12 11:43:56,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:56,413 INFO L495 AbstractCegarLoop]: Abstraction has 3722 states and 5676 transitions. [2022-07-12 11:43:56,413 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) [2022-07-12 11:43:56,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5676 transitions. [2022-07-12 11:43:56,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-12 11:43:56,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:56,423 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] [2022-07-12 11:43:56,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 11:43:56,424 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:56,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:56,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1549007365, now seen corresponding path program 1 times [2022-07-12 11:43:56,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:56,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631673308] [2022-07-12 11:43:56,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:56,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:56,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:43:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:56,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:43:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:56,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:43:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:56,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:56,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:43:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 11:43:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:57,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:43:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:43:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:57,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:57,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 11:43:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:57,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:57,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 11:43:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-12 11:43:57,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:57,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631673308] [2022-07-12 11:43:57,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631673308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:57,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:57,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:43:57,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444343537] [2022-07-12 11:43:57,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:57,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:43:57,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:57,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:43:57,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:43:57,160 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) [2022-07-12 11:43:59,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:02,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:03,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:44:03,961 INFO L93 Difference]: Finished difference Result 7526 states and 11964 transitions. [2022-07-12 11:44:03,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:44:03,962 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 [2022-07-12 11:44:03,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:44:03,977 INFO L225 Difference]: With dead ends: 7526 [2022-07-12 11:44:03,977 INFO L226 Difference]: Without dead ends: 3812 [2022-07-12 11:44:03,988 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 [2022-07-12 11:44:03,988 INFO L413 NwaCegarLoop]: 2983 mSDtfsCounter, 2805 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 791 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3164 SdHoareTripleChecker+Valid, 4645 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-12 11:44:03,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3164 Valid, 4645 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 635 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-07-12 11:44:03,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2022-07-12 11:44:04,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 3722. [2022-07-12 11:44:04,167 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) [2022-07-12 11:44:04,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5662 transitions. [2022-07-12 11:44:04,176 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5662 transitions. Word has length 228 [2022-07-12 11:44:04,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:44:04,176 INFO L495 AbstractCegarLoop]: Abstraction has 3722 states and 5662 transitions. [2022-07-12 11:44:04,176 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) [2022-07-12 11:44:04,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5662 transitions. [2022-07-12 11:44:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-12 11:44:04,187 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:44:04,187 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] [2022-07-12 11:44:04,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 11:44:04,188 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:44:04,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:44:04,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1801960069, now seen corresponding path program 1 times [2022-07-12 11:44:04,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:44:04,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066754426] [2022-07-12 11:44:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:44:04,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:44:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:44:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:44:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:44:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:44:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 11:44:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:44:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:44:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 11:44:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 11:44:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-12 11:44:04,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:44:04,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066754426] [2022-07-12 11:44:04,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066754426] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:44:04,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047927876] [2022-07-12 11:44:04,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:44:04,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:44:04,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:44:04,796 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) [2022-07-12 11:44:04,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:44:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:05,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 4738 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-12 11:44:05,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:44:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-12 11:44:05,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:44:05,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047927876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:44:05,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:44:05,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-12 11:44:05,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508384804] [2022-07-12 11:44:05,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:44:05,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:44:05,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:44:05,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:44:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:44:05,982 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) [2022-07-12 11:44:06,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:44:06,084 INFO L93 Difference]: Finished difference Result 7496 states and 11429 transitions. [2022-07-12 11:44:06,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:44:06,084 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 [2022-07-12 11:44:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:44:06,094 INFO L225 Difference]: With dead ends: 7496 [2022-07-12 11:44:06,094 INFO L226 Difference]: Without dead ends: 3782 [2022-07-12 11:44:06,104 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 [2022-07-12 11:44:06,104 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 [2022-07-12 11:44:06,104 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] [2022-07-12 11:44:06,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2022-07-12 11:44:06,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3734. [2022-07-12 11:44:06,230 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) [2022-07-12 11:44:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 5680 transitions. [2022-07-12 11:44:06,239 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 5680 transitions. Word has length 228 [2022-07-12 11:44:06,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:44:06,239 INFO L495 AbstractCegarLoop]: Abstraction has 3734 states and 5680 transitions. [2022-07-12 11:44:06,240 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) [2022-07-12 11:44:06,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 5680 transitions. [2022-07-12 11:44:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-12 11:44:06,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:44:06,249 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] [2022-07-12 11:44:06,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 11:44:06,466 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 [2022-07-12 11:44:06,467 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:44:06,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:44:06,467 INFO L85 PathProgramCache]: Analyzing trace with hash 974849929, now seen corresponding path program 1 times [2022-07-12 11:44:06,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:44:06,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317215350] [2022-07-12 11:44:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:44:06,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:44:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:44:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:44:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:44:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:44:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 11:44:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:44:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:44:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 11:44:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 11:44:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:06,924 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-12 11:44:06,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:44:06,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317215350] [2022-07-12 11:44:06,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317215350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:44:06,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:44:06,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:44:06,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742848879] [2022-07-12 11:44:06,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:44:06,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:44:06,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:44:06,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:44:06,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:44:06,927 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) [2022-07-12 11:44:09,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:11,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:13,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:16,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:19,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:44:19,829 INFO L93 Difference]: Finished difference Result 7604 states and 12035 transitions. [2022-07-12 11:44:19,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:44:19,829 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 [2022-07-12 11:44:19,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:44:19,848 INFO L225 Difference]: With dead ends: 7604 [2022-07-12 11:44:19,848 INFO L226 Difference]: Without dead ends: 3876 [2022-07-12 11:44:19,859 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 [2022-07-12 11:44:19,860 INFO L413 NwaCegarLoop]: 2980 mSDtfsCounter, 353 mSDsluCounter, 6501 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 594 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 9481 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-07-12 11:44:19,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 9481 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 1664 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time] [2022-07-12 11:44:19,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3876 states. [2022-07-12 11:44:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3876 to 3736. [2022-07-12 11:44:20,037 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) [2022-07-12 11:44:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 5680 transitions. [2022-07-12 11:44:20,046 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 5680 transitions. Word has length 228 [2022-07-12 11:44:20,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:44:20,046 INFO L495 AbstractCegarLoop]: Abstraction has 3736 states and 5680 transitions. [2022-07-12 11:44:20,046 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) [2022-07-12 11:44:20,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 5680 transitions. [2022-07-12 11:44:20,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-12 11:44:20,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:44:20,057 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] [2022-07-12 11:44:20,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 11:44:20,057 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:44:20,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:44:20,057 INFO L85 PathProgramCache]: Analyzing trace with hash 764046341, now seen corresponding path program 1 times [2022-07-12 11:44:20,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:44:20,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312184010] [2022-07-12 11:44:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:44:20,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:44:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:44:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:44:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:44:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:44:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 11:44:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:44:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:44:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 11:44:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 11:44:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-12 11:44:20,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:44:20,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312184010] [2022-07-12 11:44:20,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312184010] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:44:20,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083164219] [2022-07-12 11:44:20,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:44:20,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:44:20,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:44:20,567 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) [2022-07-12 11:44:20,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 11:44:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:21,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 4706 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-12 11:44:21,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:44:21,715 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 [2022-07-12 11:44:21,719 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 [2022-07-12 11:44:21,744 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 [2022-07-12 11:44:21,746 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 [2022-07-12 11:44:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 20 proven. 16 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-12 11:44:21,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:44:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-12 11:44:21,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083164219] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 11:44:21,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:44:21,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 15 [2022-07-12 11:44:21,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58644597] [2022-07-12 11:44:21,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:44:21,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:44:21,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:44:21,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:44:21,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:44:21,878 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) [2022-07-12 11:44:25,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:26,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:44:26,105 INFO L93 Difference]: Finished difference Result 7514 states and 11448 transitions. [2022-07-12 11:44:26,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:44:26,106 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 [2022-07-12 11:44:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:44:26,116 INFO L225 Difference]: With dead ends: 7514 [2022-07-12 11:44:26,116 INFO L226 Difference]: Without dead ends: 3786 [2022-07-12 11:44:26,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-07-12 11:44:26,125 INFO L413 NwaCegarLoop]: 2945 mSDtfsCounter, 41 mSDsluCounter, 8529 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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, 4.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:44:26,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 11474 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 271 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-07-12 11:44:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2022-07-12 11:44:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3772. [2022-07-12 11:44:26,268 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) [2022-07-12 11:44:26,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 5736 transitions. [2022-07-12 11:44:26,277 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 5736 transitions. Word has length 228 [2022-07-12 11:44:26,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:44:26,278 INFO L495 AbstractCegarLoop]: Abstraction has 3772 states and 5736 transitions. [2022-07-12 11:44:26,278 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) [2022-07-12 11:44:26,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 5736 transitions. [2022-07-12 11:44:26,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-12 11:44:26,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:44:26,288 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] [2022-07-12 11:44:26,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 11:44:26,503 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 [2022-07-12 11:44:26,504 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:44:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:44:26,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1231334777, now seen corresponding path program 1 times [2022-07-12 11:44:26,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:44:26,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927663153] [2022-07-12 11:44:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:44:26,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:44:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:44:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:44:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:44:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:44:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 11:44:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 11:44:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 11:44:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-12 11:44:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-12 11:44:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-07-12 11:44:26,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:44:26,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927663153] [2022-07-12 11:44:26,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927663153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:44:26,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:44:26,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:44:26,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591854401] [2022-07-12 11:44:26,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:44:26,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:44:26,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:44:26,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:44:26,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:44:26,878 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) [2022-07-12 11:44:30,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:33,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:44:35,766 INFO L93 Difference]: Finished difference Result 7698 states and 12175 transitions. [2022-07-12 11:44:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:44:35,767 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 [2022-07-12 11:44:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:44:35,785 INFO L225 Difference]: With dead ends: 7698 [2022-07-12 11:44:35,785 INFO L226 Difference]: Without dead ends: 3934 [2022-07-12 11:44:35,796 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 [2022-07-12 11:44:35,797 INFO L413 NwaCegarLoop]: 3001 mSDtfsCounter, 1367 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 675 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 5662 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-07-12 11:44:35,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1871 Valid, 5662 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [675 Valid, 1092 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-07-12 11:44:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2022-07-12 11:44:35,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3834. [2022-07-12 11:44:35,993 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) [2022-07-12 11:44:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3834 states to 3834 states and 5796 transitions. [2022-07-12 11:44:36,091 INFO L78 Accepts]: Start accepts. Automaton has 3834 states and 5796 transitions. Word has length 242 [2022-07-12 11:44:36,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:44:36,092 INFO L495 AbstractCegarLoop]: Abstraction has 3834 states and 5796 transitions. [2022-07-12 11:44:36,092 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) [2022-07-12 11:44:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3834 states and 5796 transitions. [2022-07-12 11:44:36,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-12 11:44:36,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:44:36,102 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] [2022-07-12 11:44:36,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 11:44:36,102 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:44:36,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:44:36,103 INFO L85 PathProgramCache]: Analyzing trace with hash 135716423, now seen corresponding path program 1 times [2022-07-12 11:44:36,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:44:36,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878863791] [2022-07-12 11:44:36,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:44:36,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:44:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:44:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:44:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:44:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:44:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 11:44:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 11:44:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 11:44:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-12 11:44:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-12 11:44:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-12 11:44:36,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:44:36,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878863791] [2022-07-12 11:44:36,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878863791] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:44:36,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310339813] [2022-07-12 11:44:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:44:36,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:44:36,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:44:36,612 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) [2022-07-12 11:44:36,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 11:44:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:37,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 4722 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-12 11:44:37,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:44:37,742 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 [2022-07-12 11:44:37,746 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 [2022-07-12 11:44:37,771 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 [2022-07-12 11:44:37,774 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 [2022-07-12 11:44:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-12 11:44:37,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:44:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-12 11:44:37,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310339813] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 11:44:37,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:44:37,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 15 [2022-07-12 11:44:37,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945008486] [2022-07-12 11:44:37,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:44:37,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:44:37,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:44:37,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:44:37,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:44:37,879 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) [2022-07-12 11:44:42,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:44:42,364 INFO L93 Difference]: Finished difference Result 7710 states and 11680 transitions. [2022-07-12 11:44:42,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:44:42,364 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 [2022-07-12 11:44:42,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:44:42,375 INFO L225 Difference]: With dead ends: 7710 [2022-07-12 11:44:42,375 INFO L226 Difference]: Without dead ends: 3884 [2022-07-12 11:44:42,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-07-12 11:44:42,384 INFO L413 NwaCegarLoop]: 2943 mSDtfsCounter, 41 mSDsluCounter, 8523 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 18 mSolverCounterUnsat, 1 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, 271 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:44:42,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 11466 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 271 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-07-12 11:44:42,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2022-07-12 11:44:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3866. [2022-07-12 11:44:42,602 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) [2022-07-12 11:44:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 5848 transitions. [2022-07-12 11:44:42,610 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 5848 transitions. Word has length 242 [2022-07-12 11:44:42,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:44:42,611 INFO L495 AbstractCegarLoop]: Abstraction has 3866 states and 5848 transitions. [2022-07-12 11:44:42,612 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) [2022-07-12 11:44:42,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 5848 transitions. [2022-07-12 11:44:42,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-12 11:44:42,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:44:42,622 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] [2022-07-12 11:44:42,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 11:44:42,847 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 [2022-07-12 11:44:42,848 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:44:42,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:44:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash 502834811, now seen corresponding path program 1 times [2022-07-12 11:44:42,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:44:42,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995617350] [2022-07-12 11:44:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:44:42,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:44:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:44:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:44:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:44:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:44:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:44:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 11:44:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 11:44:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 11:44:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-12 11:44:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-12 11:44:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:44:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 11:44:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-12 11:44:43,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:44:43,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995617350] [2022-07-12 11:44:43,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995617350] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:44:43,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447136132] [2022-07-12 11:44:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:44:43,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:44:43,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:44:43,319 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) [2022-07-12 11:44:43,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 11:44:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:44:44,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 4776 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-12 11:44:44,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:44:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-12 11:44:44,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:44:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-12 11:44:44,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447136132] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:44:44,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:44:44,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 15 [2022-07-12 11:44:44,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214992766] [2022-07-12 11:44:44,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:44:44,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 11:44:44,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:44:44,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 11:44:44,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:44:44,605 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) [2022-07-12 11:44:47,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:48,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:50,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:52,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:54,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:44:56,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:45:01,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:45:06,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:45:08,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:45:13,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:45:13,647 INFO L93 Difference]: Finished difference Result 7888 states and 12409 transitions. [2022-07-12 11:45:13,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 11:45:13,648 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 [2022-07-12 11:45:13,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:45:13,665 INFO L225 Difference]: With dead ends: 7888 [2022-07-12 11:45:13,665 INFO L226 Difference]: Without dead ends: 4030 [2022-07-12 11:45:13,675 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 [2022-07-12 11:45:13,676 INFO L413 NwaCegarLoop]: 3027 mSDtfsCounter, 1408 mSDsluCounter, 23286 mSDsCounter, 0 mSdLazyCounter, 5331 mSolverCounterSat, 604 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 26313 SdHoareTripleChecker+Invalid, 5936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 5331 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2022-07-12 11:45:13,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1904 Valid, 26313 Invalid, 5936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 5331 Invalid, 1 Unknown, 0 Unchecked, 28.7s Time] [2022-07-12 11:45:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4030 states. [2022-07-12 11:45:13,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4030 to 3878. [2022-07-12 11:45:13,865 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) [2022-07-12 11:45:13,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 5876 transitions. [2022-07-12 11:45:13,876 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 5876 transitions. Word has length 240 [2022-07-12 11:45:13,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:45:13,877 INFO L495 AbstractCegarLoop]: Abstraction has 3878 states and 5876 transitions. [2022-07-12 11:45:13,877 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) [2022-07-12 11:45:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 5876 transitions. [2022-07-12 11:45:13,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-12 11:45:13,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:45:13,924 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] [2022-07-12 11:45:13,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 11:45:14,135 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 [2022-07-12 11:45:14,135 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:45:14,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:45:14,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1707745159, now seen corresponding path program 1 times [2022-07-12 11:45:14,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:45:14,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852943356] [2022-07-12 11:45:14,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:45:14,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:45:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:45:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:45:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:45:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:45:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:45:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 11:45:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 11:45:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 11:45:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-12 11:45:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-12 11:45:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 11:45:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-12 11:45:14,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:45:14,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852943356] [2022-07-12 11:45:14,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852943356] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:45:14,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835741970] [2022-07-12 11:45:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:45:14,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:45:14,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:45:14,539 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) [2022-07-12 11:45:14,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 11:45:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:15,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 4794 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 11:45:15,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:45:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 11:45:15,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:45:15,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835741970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:45:15,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:45:15,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-07-12 11:45:15,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782637688] [2022-07-12 11:45:15,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:45:15,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:45:15,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:45:15,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:45:15,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:45:15,843 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) [2022-07-12 11:45:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:45:16,071 INFO L93 Difference]: Finished difference Result 7826 states and 11868 transitions. [2022-07-12 11:45:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:45:16,072 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 [2022-07-12 11:45:16,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:45:16,086 INFO L225 Difference]: With dead ends: 7826 [2022-07-12 11:45:16,087 INFO L226 Difference]: Without dead ends: 3956 [2022-07-12 11:45:16,094 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 [2022-07-12 11:45:16,095 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 [2022-07-12 11:45:16,095 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] [2022-07-12 11:45:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2022-07-12 11:45:16,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3884. [2022-07-12 11:45:16,329 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) [2022-07-12 11:45:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 5882 transitions. [2022-07-12 11:45:16,340 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 5882 transitions. Word has length 240 [2022-07-12 11:45:16,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:45:16,340 INFO L495 AbstractCegarLoop]: Abstraction has 3884 states and 5882 transitions. [2022-07-12 11:45:16,341 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) [2022-07-12 11:45:16,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 5882 transitions. [2022-07-12 11:45:16,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-12 11:45:16,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:45:16,350 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] [2022-07-12 11:45:16,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-12 11:45:16,566 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 [2022-07-12 11:45:16,567 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:45:16,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:45:16,567 INFO L85 PathProgramCache]: Analyzing trace with hash -576958534, now seen corresponding path program 2 times [2022-07-12 11:45:16,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:45:16,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054016812] [2022-07-12 11:45:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:45:16,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:45:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:45:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:45:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:45:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:45:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:45:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 11:45:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 11:45:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 11:45:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-12 11:45:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-12 11:45:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 11:45:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-12 11:45:16,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:45:16,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054016812] [2022-07-12 11:45:16,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054016812] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:45:16,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901827758] [2022-07-12 11:45:16,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:45:16,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:45:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:45:16,998 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) [2022-07-12 11:45:16,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 11:45:17,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 11:45:17,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:45:18,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 3856 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 11:45:18,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:45:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-12 11:45:18,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:45:18,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901827758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:45:18,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:45:18,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-12 11:45:18,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168472221] [2022-07-12 11:45:18,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:45:18,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:45:18,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:45:18,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:45:18,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:45:18,068 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) [2022-07-12 11:45:18,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:45:18,176 INFO L93 Difference]: Finished difference Result 7820 states and 11865 transitions. [2022-07-12 11:45:18,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:45:18,177 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 [2022-07-12 11:45:18,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:45:18,189 INFO L225 Difference]: With dead ends: 7820 [2022-07-12 11:45:18,189 INFO L226 Difference]: Without dead ends: 3944 [2022-07-12 11:45:18,197 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 [2022-07-12 11:45:18,198 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 [2022-07-12 11:45:18,198 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] [2022-07-12 11:45:18,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2022-07-12 11:45:18,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3884. [2022-07-12 11:45:18,399 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) [2022-07-12 11:45:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 5880 transitions. [2022-07-12 11:45:18,409 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 5880 transitions. Word has length 240 [2022-07-12 11:45:18,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:45:18,410 INFO L495 AbstractCegarLoop]: Abstraction has 3884 states and 5880 transitions. [2022-07-12 11:45:18,410 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) [2022-07-12 11:45:18,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 5880 transitions. [2022-07-12 11:45:18,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-12 11:45:18,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:45:18,418 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] [2022-07-12 11:45:18,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 11:45:18,639 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 [2022-07-12 11:45:18,640 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:45:18,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:45:18,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1738221158, now seen corresponding path program 1 times [2022-07-12 11:45:18,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:45:18,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587712178] [2022-07-12 11:45:18,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:45:18,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:45:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:18,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:45:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:45:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:18,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:18,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:45:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:18,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:45:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:19,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:19,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:45:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:19,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 11:45:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 11:45:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:19,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 11:45:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:19,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 11:45:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:19,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-12 11:45:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:19,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:19,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-12 11:45:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 35 proven. 19 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-12 11:45:19,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:45:19,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587712178] [2022-07-12 11:45:19,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587712178] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:45:19,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965851852] [2022-07-12 11:45:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:45:19,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:45:19,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:45:19,160 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) [2022-07-12 11:45:19,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 11:45:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:20,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 4819 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-12 11:45:20,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:45:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-12 11:45:20,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:45:20,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965851852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:45:20,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:45:20,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2022-07-12 11:45:20,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143480197] [2022-07-12 11:45:20,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:45:20,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:45:20,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:45:20,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:45:20,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:45:20,548 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) [2022-07-12 11:45:21,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:45:21,139 INFO L93 Difference]: Finished difference Result 7820 states and 12312 transitions. [2022-07-12 11:45:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:45:21,140 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 [2022-07-12 11:45:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:45:21,152 INFO L225 Difference]: With dead ends: 7820 [2022-07-12 11:45:21,152 INFO L226 Difference]: Without dead ends: 3944 [2022-07-12 11:45:21,160 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 [2022-07-12 11:45:21,160 INFO L413 NwaCegarLoop]: 3055 mSDtfsCounter, 47 mSDsluCounter, 18039 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 21094 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:45:21,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 21094 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:45:21,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2022-07-12 11:45:21,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3896. [2022-07-12 11:45:21,367 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) [2022-07-12 11:45:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 6340 transitions. [2022-07-12 11:45:21,378 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 6340 transitions. Word has length 254 [2022-07-12 11:45:21,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:45:21,379 INFO L495 AbstractCegarLoop]: Abstraction has 3896 states and 6340 transitions. [2022-07-12 11:45:21,379 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) [2022-07-12 11:45:21,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 6340 transitions. [2022-07-12 11:45:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-12 11:45:21,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:45:21,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:45:21,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 11:45:21,611 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 [2022-07-12 11:45:21,612 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:45:21,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:45:21,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1073103225, now seen corresponding path program 2 times [2022-07-12 11:45:21,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:45:21,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939193345] [2022-07-12 11:45:21,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:45:21,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:45:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:21,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:45:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:21,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:45:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:21,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:21,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:45:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:21,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:21,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:45:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:21,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:45:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:21,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 11:45:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 11:45:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:22,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 11:45:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:22,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:22,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 11:45:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:22,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-12 11:45:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:22,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:22,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-12 11:45:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 35 proven. 19 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-12 11:45:22,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:45:22,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939193345] [2022-07-12 11:45:22,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939193345] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:45:22,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967882059] [2022-07-12 11:45:22,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:45:22,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:45:22,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:45:22,116 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) [2022-07-12 11:45:22,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 11:45:23,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 11:45:23,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:45:23,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 3865 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 11:45:23,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:45:23,318 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 [2022-07-12 11:45:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-07-12 11:45:23,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:45:23,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967882059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:45:23,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:45:23,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-07-12 11:45:23,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217608508] [2022-07-12 11:45:23,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:45:23,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:45:23,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:45:23,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:45:23,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:45:23,357 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) [2022-07-12 11:45:26,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:45:29,834 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:45:31,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:45:32,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:45:32,344 INFO L93 Difference]: Finished difference Result 7804 states and 12718 transitions. [2022-07-12 11:45:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:45:32,344 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 [2022-07-12 11:45:32,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:45:32,354 INFO L225 Difference]: With dead ends: 7804 [2022-07-12 11:45:32,355 INFO L226 Difference]: Without dead ends: 3916 [2022-07-12 11:45:32,363 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 [2022-07-12 11:45:32,364 INFO L413 NwaCegarLoop]: 2925 mSDtfsCounter, 4 mSDsluCounter, 8276 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11201 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:45:32,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 11201 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 513 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2022-07-12 11:45:32,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3916 states. [2022-07-12 11:45:32,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3916 to 3896. [2022-07-12 11:45:32,572 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) [2022-07-12 11:45:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 6340 transitions. [2022-07-12 11:45:32,582 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 6340 transitions. Word has length 254 [2022-07-12 11:45:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:45:32,582 INFO L495 AbstractCegarLoop]: Abstraction has 3896 states and 6340 transitions. [2022-07-12 11:45:32,582 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) [2022-07-12 11:45:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 6340 transitions. [2022-07-12 11:45:32,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-12 11:45:32,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:45:32,591 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] [2022-07-12 11:45:32,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 11:45:32,814 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 [2022-07-12 11:45:32,815 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:45:32,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:45:32,815 INFO L85 PathProgramCache]: Analyzing trace with hash 219479446, now seen corresponding path program 1 times [2022-07-12 11:45:32,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:45:32,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818827822] [2022-07-12 11:45:32,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:45:32,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:45:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:45:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:45:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:45:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:45:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 11:45:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 11:45:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 11:45:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-12 11:45:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-12 11:45:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-12 11:45:33,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:45:33,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818827822] [2022-07-12 11:45:33,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818827822] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:45:33,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546242446] [2022-07-12 11:45:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:45:33,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:45:33,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:45:33,300 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) [2022-07-12 11:45:33,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 11:45:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:34,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 4787 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-12 11:45:34,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:45:34,602 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 [2022-07-12 11:45:34,608 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 [2022-07-12 11:45:34,637 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 [2022-07-12 11:45:34,640 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 [2022-07-12 11:45:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-12 11:45:34,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:45:34,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546242446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:45:34,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:45:34,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-12 11:45:34,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824047878] [2022-07-12 11:45:34,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:45:34,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:45:34,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:45:34,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:45:34,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:45:34,658 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) [2022-07-12 11:45:36,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:45:39,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:45:40,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:45:40,785 INFO L93 Difference]: Finished difference Result 7880 states and 12843 transitions. [2022-07-12 11:45:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:45:40,803 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 [2022-07-12 11:45:40,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:45:40,815 INFO L225 Difference]: With dead ends: 7880 [2022-07-12 11:45:40,815 INFO L226 Difference]: Without dead ends: 3992 [2022-07-12 11:45:40,823 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 [2022-07-12 11:45:40,824 INFO L413 NwaCegarLoop]: 2945 mSDtfsCounter, 1171 mSDsluCounter, 5988 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 8933 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:45:40,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 8933 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1452 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-07-12 11:45:40,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2022-07-12 11:45:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 3928. [2022-07-12 11:45:41,108 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) [2022-07-12 11:45:41,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 6398 transitions. [2022-07-12 11:45:41,120 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 6398 transitions. Word has length 260 [2022-07-12 11:45:41,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:45:41,120 INFO L495 AbstractCegarLoop]: Abstraction has 3928 states and 6398 transitions. [2022-07-12 11:45:41,120 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) [2022-07-12 11:45:41,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 6398 transitions. [2022-07-12 11:45:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-07-12 11:45:41,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:45:41,130 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] [2022-07-12 11:45:41,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-12 11:45:41,356 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 [2022-07-12 11:45:41,356 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:45:41,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:45:41,357 INFO L85 PathProgramCache]: Analyzing trace with hash 100388038, now seen corresponding path program 1 times [2022-07-12 11:45:41,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:45:41,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727235114] [2022-07-12 11:45:41,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:45:41,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:45:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:45:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:45:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:45:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:45:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 11:45:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 11:45:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-12 11:45:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-12 11:45:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-12 11:45:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:45:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:45:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-12 11:45:42,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:45:42,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727235114] [2022-07-12 11:45:42,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727235114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:45:42,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:45:42,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 11:45:42,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580285256] [2022-07-12 11:45:42,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:45:42,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:45:42,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:45:42,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:45:42,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:45:42,366 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) [2022-07-12 11:45:45,864 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 [] [2022-07-12 11:45:48,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:45:51,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:45:53,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:45:54,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:45:58,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:00,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:02,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:46:02,698 INFO L93 Difference]: Finished difference Result 7928 states and 12917 transitions. [2022-07-12 11:46:02,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:46:02,701 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 [2022-07-12 11:46:02,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:46:02,711 INFO L225 Difference]: With dead ends: 7928 [2022-07-12 11:46:02,711 INFO L226 Difference]: Without dead ends: 4008 [2022-07-12 11:46:02,718 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 [2022-07-12 11:46:02,719 INFO L413 NwaCegarLoop]: 2998 mSDtfsCounter, 272 mSDsluCounter, 11494 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 597 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 14492 SdHoareTripleChecker+Invalid, 3671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:46:02,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 14492 Invalid, 3671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 3072 Invalid, 2 Unknown, 0 Unchecked, 20.1s Time] [2022-07-12 11:46:02,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4008 states. [2022-07-12 11:46:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4008 to 3932. [2022-07-12 11:46:02,989 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) [2022-07-12 11:46:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3932 states to 3932 states and 6402 transitions. [2022-07-12 11:46:02,999 INFO L78 Accepts]: Start accepts. Automaton has 3932 states and 6402 transitions. Word has length 268 [2022-07-12 11:46:02,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:46:02,999 INFO L495 AbstractCegarLoop]: Abstraction has 3932 states and 6402 transitions. [2022-07-12 11:46:02,999 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) [2022-07-12 11:46:03,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3932 states and 6402 transitions. [2022-07-12 11:46:03,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-12 11:46:03,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:46:03,008 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] [2022-07-12 11:46:03,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 11:46:03,008 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:46:03,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:46:03,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1537715532, now seen corresponding path program 1 times [2022-07-12 11:46:03,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:46:03,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106789636] [2022-07-12 11:46:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:46:03,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:46:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:46:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:46:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:46:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:46:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 11:46:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 11:46:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 11:46:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-12 11:46:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-12 11:46:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-12 11:46:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-12 11:46:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-12 11:46:03,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:46:03,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106789636] [2022-07-12 11:46:03,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106789636] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:46:03,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845018621] [2022-07-12 11:46:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:46:03,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:46:03,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:46:03,428 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) [2022-07-12 11:46:03,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 11:46:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:05,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 4857 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 11:46:05,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:46:05,112 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 20 treesize of output 16 [2022-07-12 11:46:05,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-07-12 11:46:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-12 11:46:05,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:46:05,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845018621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:46:05,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:46:05,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-12 11:46:05,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051522006] [2022-07-12 11:46:05,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:46:05,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:46:05,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:46:05,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:46:05,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:46:05,184 INFO L87 Difference]: Start difference. First operand 3932 states and 6402 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2022-07-12 11:46:06,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:08,139 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:09,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:46:09,778 INFO L93 Difference]: Finished difference Result 7948 states and 12963 transitions. [2022-07-12 11:46:09,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:46:09,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 [2022-07-12 11:46:09,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:46:09,795 INFO L225 Difference]: With dead ends: 7948 [2022-07-12 11:46:09,795 INFO L226 Difference]: Without dead ends: 4024 [2022-07-12 11:46:09,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:46:09,807 INFO L413 NwaCegarLoop]: 2979 mSDtfsCounter, 46 mSDsluCounter, 5647 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 8626 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:46:09,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 8626 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-12 11:46:09,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2022-07-12 11:46:10,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3936. [2022-07-12 11:46:10,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3936 states, 2687 states have (on average 1.355787123185709) internal successors, (3643), 2857 states have internal predecessors, (3643), 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) [2022-07-12 11:46:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3936 states to 3936 states and 6406 transitions. [2022-07-12 11:46:10,071 INFO L78 Accepts]: Start accepts. Automaton has 3936 states and 6406 transitions. Word has length 272 [2022-07-12 11:46:10,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:46:10,071 INFO L495 AbstractCegarLoop]: Abstraction has 3936 states and 6406 transitions. [2022-07-12 11:46:10,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2022-07-12 11:46:10,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3936 states and 6406 transitions. [2022-07-12 11:46:10,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-12 11:46:10,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:46:10,081 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] [2022-07-12 11:46:10,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 11:46:10,303 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 [2022-07-12 11:46:10,304 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:46:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:46:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1135265542, now seen corresponding path program 1 times [2022-07-12 11:46:10,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:46:10,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714693266] [2022-07-12 11:46:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:46:10,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:46:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:46:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:46:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:46:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:46:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 11:46:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 11:46:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:46:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 11:46:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-12 11:46:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 11:46:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-12 11:46:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-12 11:46:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-12 11:46:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 44 proven. 19 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-12 11:46:10,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:46:10,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714693266] [2022-07-12 11:46:10,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714693266] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:46:10,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025733053] [2022-07-12 11:46:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:46:10,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:46:10,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:46:10,808 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) [2022-07-12 11:46:10,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 11:46:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:12,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 4883 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-12 11:46:12,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:46:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-12 11:46:12,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:46:12,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025733053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:46:12,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:46:12,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2022-07-12 11:46:12,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822786530] [2022-07-12 11:46:12,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:46:12,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:46:12,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:46:12,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:46:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:46:12,641 INFO L87 Difference]: Start difference. First operand 3936 states and 6406 transitions. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 6 states have internal predecessors, (184), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 11:46:14,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:46:14,533 INFO L93 Difference]: Finished difference Result 8064 states and 13142 transitions. [2022-07-12 11:46:14,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:46:14,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 6 states have internal predecessors, (184), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 280 [2022-07-12 11:46:14,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:46:14,545 INFO L225 Difference]: With dead ends: 8064 [2022-07-12 11:46:14,545 INFO L226 Difference]: Without dead ends: 4136 [2022-07-12 11:46:14,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:46:14,553 INFO L413 NwaCegarLoop]: 3125 mSDtfsCounter, 1194 mSDsluCounter, 12903 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 16028 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 11:46:14,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1666 Valid, 16028 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 11:46:14,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2022-07-12 11:46:14,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3940. [2022-07-12 11:46:14,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3940 states, 2691 states have (on average 1.3552582683017467) internal successors, (3647), 2859 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) [2022-07-12 11:46:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3940 states to 3940 states and 6410 transitions. [2022-07-12 11:46:14,822 INFO L78 Accepts]: Start accepts. Automaton has 3940 states and 6410 transitions. Word has length 280 [2022-07-12 11:46:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:46:14,823 INFO L495 AbstractCegarLoop]: Abstraction has 3940 states and 6410 transitions. [2022-07-12 11:46:14,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 6 states have internal predecessors, (184), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 11:46:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3940 states and 6410 transitions. [2022-07-12 11:46:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-12 11:46:14,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:46:14,833 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:46:14,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 11:46:15,047 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 [2022-07-12 11:46:15,048 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:46:15,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:46:15,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1225958970, now seen corresponding path program 1 times [2022-07-12 11:46:15,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:46:15,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241261606] [2022-07-12 11:46:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:46:15,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:46:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:46:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:46:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:46:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:46:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 11:46:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 11:46:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:46:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 11:46:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-12 11:46:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 11:46:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-12 11:46:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-12 11:46:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-12 11:46:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-12 11:46:15,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:46:15,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241261606] [2022-07-12 11:46:15,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241261606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:46:15,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:46:15,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:46:15,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771220450] [2022-07-12 11:46:15,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:46:15,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:46:15,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:46:15,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:46:15,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:46:15,620 INFO L87 Difference]: Start difference. First operand 3940 states and 6410 transitions. Second operand has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 11:46:19,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:20,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:22,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:23,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:25,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:28,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:30,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:38,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:39,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:46:39,870 INFO L93 Difference]: Finished difference Result 7986 states and 12999 transitions. [2022-07-12 11:46:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:46:39,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 280 [2022-07-12 11:46:39,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:46:39,884 INFO L225 Difference]: With dead ends: 7986 [2022-07-12 11:46:39,884 INFO L226 Difference]: Without dead ends: 4054 [2022-07-12 11:46:39,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:46:39,893 INFO L413 NwaCegarLoop]: 2995 mSDtfsCounter, 306 mSDsluCounter, 16706 mSDsCounter, 0 mSdLazyCounter, 3934 mSolverCounterSat, 600 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 19701 SdHoareTripleChecker+Invalid, 4535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 3934 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:46:39,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 19701 Invalid, 4535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 3934 Invalid, 1 Unknown, 0 Unchecked, 24.0s Time] [2022-07-12 11:46:39,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4054 states. [2022-07-12 11:46:40,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4054 to 3946. [2022-07-12 11:46:40,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 2697 states have (on average 1.3544679273266593) internal successors, (3653), 2863 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) [2022-07-12 11:46:40,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 6416 transitions. [2022-07-12 11:46:40,135 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 6416 transitions. Word has length 280 [2022-07-12 11:46:40,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:46:40,136 INFO L495 AbstractCegarLoop]: Abstraction has 3946 states and 6416 transitions. [2022-07-12 11:46:40,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 11:46:40,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 6416 transitions. [2022-07-12 11:46:40,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-12 11:46:40,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:46:40,145 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:46:40,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 11:46:40,145 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:46:40,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:46:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash -49309561, now seen corresponding path program 2 times [2022-07-12 11:46:40,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:46:40,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443787956] [2022-07-12 11:46:40,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:46:40,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:46:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:46:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:46:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:46:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:46:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 11:46:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 11:46:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:46:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 11:46:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-12 11:46:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 11:46:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-12 11:46:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:46:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-12 11:46:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-12 11:46:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:46:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-07-12 11:46:40,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:46:40,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443787956] [2022-07-12 11:46:40,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443787956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:46:40,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:46:40,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:46:40,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103705737] [2022-07-12 11:46:40,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:46:40,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:46:40,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:46:40,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:46:40,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:46:40,739 INFO L87 Difference]: Start difference. First operand 3946 states and 6416 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 5 states have internal predecessors, (182), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 11:46:44,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:46,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:48,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:49,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:51,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:55,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:57,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 11:46:59,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:46:59,543 INFO L93 Difference]: Finished difference Result 7964 states and 12951 transitions. [2022-07-12 11:46:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:46:59,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 5 states have internal predecessors, (182), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 280 [2022-07-12 11:46:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:46:59,554 INFO L225 Difference]: With dead ends: 7964 [2022-07-12 11:46:59,554 INFO L226 Difference]: Without dead ends: 4026 [2022-07-12 11:46:59,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:46:59,565 INFO L413 NwaCegarLoop]: 2921 mSDtfsCounter, 264 mSDsluCounter, 8642 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 590 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 11563 SdHoareTripleChecker+Invalid, 3149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:46:59,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 11563 Invalid, 3149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 2555 Invalid, 4 Unknown, 0 Unchecked, 18.6s Time] [2022-07-12 11:46:59,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2022-07-12 11:46:59,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3946. [2022-07-12 11:46:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 2697 states have (on average 1.3544679273266593) internal successors, (3653), 2863 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) [2022-07-12 11:46:59,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 6416 transitions. [2022-07-12 11:46:59,854 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 6416 transitions. Word has length 280 [2022-07-12 11:46:59,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:46:59,855 INFO L495 AbstractCegarLoop]: Abstraction has 3946 states and 6416 transitions. [2022-07-12 11:46:59,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 5 states have internal predecessors, (182), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 11:46:59,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 6416 transitions. [2022-07-12 11:46:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-12 11:46:59,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:46:59,863 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] [2022-07-12 11:46:59,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 11:46:59,864 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:46:59,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:46:59,865 INFO L85 PathProgramCache]: Analyzing trace with hash 644618884, now seen corresponding path program 1 times [2022-07-12 11:46:59,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:46:59,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564361988] [2022-07-12 11:46:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:46:59,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:47:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:47:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:47:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:47:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:47:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:47:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 11:47:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 11:47:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 11:47:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-12 11:47:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-12 11:47:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-12 11:47:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-12 11:47:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-07-12 11:47:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-12 11:47:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-12 11:47:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-07-12 11:47:00,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:47:00,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564361988] [2022-07-12 11:47:00,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564361988] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:47:00,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41029710] [2022-07-12 11:47:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:47:00,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:47:00,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:47:00,412 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) [2022-07-12 11:47:00,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 11:47:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:01,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 5059 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 11:47:01,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:47:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-07-12 11:47:01,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:47:01,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41029710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:47:01,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:47:01,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-12 11:47:01,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760761287] [2022-07-12 11:47:01,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:47:01,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:47:01,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:47:01,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:47:01,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:47:01,886 INFO L87 Difference]: Start difference. First operand 3946 states and 6416 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) [2022-07-12 11:47:02,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:47:02,645 INFO L93 Difference]: Finished difference Result 7946 states and 12937 transitions. [2022-07-12 11:47:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:47:02,645 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 [2022-07-12 11:47:02,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:47:02,655 INFO L225 Difference]: With dead ends: 7946 [2022-07-12 11:47:02,655 INFO L226 Difference]: Without dead ends: 4008 [2022-07-12 11:47:02,663 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 [2022-07-12 11:47:02,668 INFO L413 NwaCegarLoop]: 2930 mSDtfsCounter, 1139 mSDsluCounter, 3929 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2022-07-12 11:47:02,670 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] [2022-07-12 11:47:02,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4008 states. [2022-07-12 11:47:02,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4008 to 3948. [2022-07-12 11:47:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 2699 states have (on average 1.3542052612078548) internal successors, (3655), 2865 states have internal predecessors, (3655), 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) [2022-07-12 11:47:02,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 6418 transitions. [2022-07-12 11:47:02,909 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 6418 transitions. Word has length 292 [2022-07-12 11:47:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:47:02,909 INFO L495 AbstractCegarLoop]: Abstraction has 3948 states and 6418 transitions. [2022-07-12 11:47:02,909 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) [2022-07-12 11:47:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 6418 transitions. [2022-07-12 11:47:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-12 11:47:02,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:47:02,919 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, 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] [2022-07-12 11:47:02,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 11:47:03,143 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,SelfDestructingSolverStorable26 [2022-07-12 11:47:03,144 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:47:03,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:47:03,144 INFO L85 PathProgramCache]: Analyzing trace with hash 35020350, now seen corresponding path program 1 times [2022-07-12 11:47:03,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:47:03,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275147458] [2022-07-12 11:47:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:47:03,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:47:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:47:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:47:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:47:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:47:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 11:47:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:47:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 11:47:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-12 11:47:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-12 11:47:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-12 11:47:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:47:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-12 11:47:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:47:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-12 11:47:03,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:47:03,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275147458] [2022-07-12 11:47:03,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275147458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:47:03,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:47:03,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:47:03,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846633652] [2022-07-12 11:47:03,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:47:03,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:47:03,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:47:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:47:03,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:47:03,994 INFO L87 Difference]: Start difference. First operand 3948 states and 6418 transitions. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 5 states have internal predecessors, (187), 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) [2022-07-12 11:47:05,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []