./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1264b42ba0b5dcb83ee2e2b35dfcd5adbd8a3fb1fa3fff4328b672883ffa55c1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:19:25,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:19:25,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:19:25,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:19:25,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:19:25,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:19:25,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:19:25,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:19:25,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:19:25,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:19:25,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:19:25,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:19:25,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:19:25,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:19:25,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:19:25,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:19:25,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:19:25,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:19:25,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:19:25,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:19:25,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:19:25,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:19:25,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:19:25,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:19:25,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:19:25,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:19:25,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:19:25,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:19:25,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:19:25,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:19:25,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:19:25,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:19:25,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:19:25,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:19:25,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:19:25,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:19:25,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:19:25,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:19:25,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:19:25,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:19:25,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:19:25,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:19:25,208 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:19:25,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:19:25,209 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:19:25,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:19:25,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:19:25,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:19:25,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:19:25,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:19:25,212 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:19:25,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:19:25,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:19:25,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:19:25,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:19:25,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:19:25,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:19:25,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:19:25,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:19:25,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:19:25,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:19:25,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:19:25,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:19:25,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:19:25,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:19:25,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:19:25,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:19:25,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:19:25,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:19:25,215 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:19:25,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:19:25,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:19:25,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1264b42ba0b5dcb83ee2e2b35dfcd5adbd8a3fb1fa3fff4328b672883ffa55c1 [2021-12-28 04:19:25,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:19:25,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:19:25,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:19:25,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:19:25,534 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:19:25,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2021-12-28 04:19:25,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4c33959/cb38c11dd0254b50bc55beb4fd5e13b1/FLAG8c2fdb05b [2021-12-28 04:19:26,192 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:19:26,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2021-12-28 04:19:26,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4c33959/cb38c11dd0254b50bc55beb4fd5e13b1/FLAG8c2fdb05b [2021-12-28 04:19:26,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4c33959/cb38c11dd0254b50bc55beb4fd5e13b1 [2021-12-28 04:19:26,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:19:26,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:19:26,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:19:26,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:19:26,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:19:26,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:19:26" (1/1) ... [2021-12-28 04:19:26,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3166bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:19:26, skipping insertion in model container [2021-12-28 04:19:26,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:19:26" (1/1) ... [2021-12-28 04:19:26,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:19:26,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:19:27,978 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i[237227,237240] [2021-12-28 04:19:28,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:19:28,169 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:19:28,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i[237227,237240] [2021-12-28 04:19:28,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:19:28,654 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:19:28,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:19:28 WrapperNode [2021-12-28 04:19:28,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:19:28,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:19:28,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:19:28,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:19:28,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:19:28" (1/1) ... [2021-12-28 04:19:28,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:19:28" (1/1) ... [2021-12-28 04:19:28,890 INFO L137 Inliner]: procedures = 306, calls = 1743, calls flagged for inlining = 109, calls inlined = 100, statements flattened = 3797 [2021-12-28 04:19:28,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:19:28,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:19:28,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:19:28,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:19:28,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:19:28" (1/1) ... [2021-12-28 04:19:28,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:19:28" (1/1) ... [2021-12-28 04:19:28,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:19:28" (1/1) ... [2021-12-28 04:19:28,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:19:28" (1/1) ... [2021-12-28 04:19:29,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:19:28" (1/1) ... [2021-12-28 04:19:29,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:19:28" (1/1) ... [2021-12-28 04:19:29,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:19:28" (1/1) ... [2021-12-28 04:19:29,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:19:29,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:19:29,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:19:29,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:19:29,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:19:28" (1/1) ... [2021-12-28 04:19:29,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:19:29,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:19:29,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 04:19:29,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 04:19:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-28 04:19:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-28 04:19:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_memstick_host [2021-12-28 04:19:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_memstick_host [2021-12-28 04:19:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-28 04:19:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-28 04:19:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:19:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:19:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:19:29,278 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:19:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure msb_stop [2021-12-28 04:19:29,278 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_stop [2021-12-28 04:19:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure msb_get_zone_from_pba [2021-12-28 04:19:29,278 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_get_zone_from_pba [2021-12-28 04:19:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-28 04:19:29,279 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-28 04:19:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:19:29,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:19:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure blk_fetch_request [2021-12-28 04:19:29,279 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_fetch_request [2021-12-28 04:19:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-28 04:19:29,279 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-28 04:19:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-12-28 04:19:29,280 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-12-28 04:19:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 04:19:29,280 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 04:19:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:19:29,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:19:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure msb_switch_to_parallel [2021-12-28 04:19:29,280 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_switch_to_parallel [2021-12-28 04:19:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 04:19:29,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 04:19:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:19:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:19:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure msb_validate_used_block_bitmap [2021-12-28 04:19:29,285 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_validate_used_block_bitmap [2021-12-28 04:19:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 04:19:29,286 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 04:19:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure msb_verify_block [2021-12-28 04:19:29,287 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_verify_block [2021-12-28 04:19:29,287 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 04:19:29,287 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 04:19:29,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2021-12-28 04:19:29,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2021-12-28 04:19:29,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_msb_disk_lock [2021-12-28 04:19:29,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_msb_disk_lock [2021-12-28 04:19:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:19:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_write [2021-12-28 04:19:29,288 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_write [2021-12-28 04:19:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-28 04:19:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-12-28 04:19:29,288 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-12-28 04:19:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure memstick_set_drvdata [2021-12-28 04:19:29,288 INFO L138 BoogieDeclarations]: Found implementation of procedure memstick_set_drvdata [2021-12-28 04:19:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request [2021-12-28 04:19:29,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request [2021-12-28 04:19:29,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:19:29,289 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-28 04:19:29,290 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-28 04:19:29,290 INFO L130 BoogieDeclarations]: Found specification of procedure msb_invalidate_reg_window [2021-12-28 04:19:29,290 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_invalidate_reg_window [2021-12-28 04:19:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure msb_io_work [2021-12-28 04:19:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_io_work [2021-12-28 04:19:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 04:19:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 04:19:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2021-12-28 04:19:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2021-12-28 04:19:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:19:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure msb_erase_block [2021-12-28 04:19:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_erase_block [2021-12-28 04:19:29,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:19:29,292 INFO L130 BoogieDeclarations]: Found specification of procedure memstick_get_drvdata [2021-12-28 04:19:29,292 INFO L138 BoogieDeclarations]: Found implementation of procedure memstick_get_drvdata [2021-12-28 04:19:29,292 INFO L130 BoogieDeclarations]: Found specification of procedure msb_data_clear [2021-12-28 04:19:29,292 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_data_clear [2021-12-28 04:19:29,292 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 04:19:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 04:19:29,293 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-28 04:19:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-28 04:19:29,293 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 04:19:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 04:19:29,293 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-28 04:19:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-28 04:19:29,294 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 04:19:29,294 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 04:19:29,294 INFO L130 BoogieDeclarations]: Found specification of procedure msb_read_bad_block_table [2021-12-28 04:19:29,294 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_read_bad_block_table [2021-12-28 04:19:29,294 INFO L130 BoogieDeclarations]: Found specification of procedure msb_update_block [2021-12-28 04:19:29,294 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_update_block [2021-12-28 04:19:29,294 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_flush [2021-12-28 04:19:29,295 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_flush [2021-12-28 04:19:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_next [2021-12-28 04:19:29,295 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_next [2021-12-28 04:19:29,295 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-12-28 04:19:29,295 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-12-28 04:19:29,296 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_start [2021-12-28 04:19:29,296 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_start [2021-12-28 04:19:29,296 INFO L130 BoogieDeclarations]: Found specification of procedure msb_run_state_machine [2021-12-28 04:19:29,296 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_run_state_machine [2021-12-28 04:19:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure msb_sg_copy [2021-12-28 04:19:29,297 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_sg_copy [2021-12-28 04:19:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-12-28 04:19:29,297 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-12-28 04:19:29,297 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-28 04:19:29,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-28 04:19:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_zero_bit [2021-12-28 04:19:29,298 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_zero_bit [2021-12-28 04:19:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_memstick_host [2021-12-28 04:19:29,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_memstick_host [2021-12-28 04:19:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:19:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-28 04:19:29,299 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-28 04:19:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure msb_get_zone_from_lba [2021-12-28 04:19:29,299 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_get_zone_from_lba [2021-12-28 04:19:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure msb_reset [2021-12-28 04:19:29,299 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_reset [2021-12-28 04:19:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2021-12-28 04:19:29,299 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2021-12-28 04:19:29,300 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2021-12-28 04:19:29,300 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_queue [2021-12-28 04:19:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 04:19:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 04:19:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2021-12-28 04:19:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2021-12-28 04:19:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure msb_bd_getgeo [2021-12-28 04:19:29,303 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_bd_getgeo [2021-12-28 04:19:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:19:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure msb_remove [2021-12-28 04:19:29,303 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_remove [2021-12-28 04:19:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:19:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:19:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2021-12-28 04:19:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2021-12-28 04:19:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure msb_mark_bad [2021-12-28 04:19:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_mark_bad [2021-12-28 04:19:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:19:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:19:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:19:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_2 [2021-12-28 04:19:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_2 [2021-12-28 04:19:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-28 04:19:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-28 04:19:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:19:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure sg_nents [2021-12-28 04:19:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_nents [2021-12-28 04:19:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:19:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure msb_read_page [2021-12-28 04:19:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_read_page [2021-12-28 04:19:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2021-12-28 04:19:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2021-12-28 04:19:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_stop [2021-12-28 04:19:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_stop [2021-12-28 04:19:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure msb_set_overwrite_flag [2021-12-28 04:19:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_set_overwrite_flag [2021-12-28 04:19:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_bytes [2021-12-28 04:19:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_bytes [2021-12-28 04:19:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-12-28 04:19:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-12-28 04:19:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure msb_disk_release [2021-12-28 04:19:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_disk_release [2021-12-28 04:19:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure msb_mark_block_used [2021-12-28 04:19:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_mark_block_used [2021-12-28 04:19:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_discard [2021-12-28 04:19:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_discard [2021-12-28 04:19:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 04:19:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 04:19:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure msb_start [2021-12-28 04:19:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_start [2021-12-28 04:19:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-28 04:19:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-28 04:19:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2021-12-28 04:19:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2021-12-28 04:19:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-12-28 04:19:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-12-28 04:19:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure msb_init_card [2021-12-28 04:19:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_init_card [2021-12-28 04:19:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2021-12-28 04:19:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2021-12-28 04:19:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-28 04:19:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-28 04:19:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:19:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_one [2021-12-28 04:19:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_one [2021-12-28 04:19:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-12-28 04:19:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-12-28 04:19:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_msb_disk_lock [2021-12-28 04:19:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_msb_disk_lock [2021-12-28 04:19:29,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:19:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:19:29,874 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:19:29,877 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:19:30,087 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:19:34,331 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:19:34,357 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:19:34,358 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:19:34,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:19:34 BoogieIcfgContainer [2021-12-28 04:19:34,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:19:34,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:19:34,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:19:34,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:19:34,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:19:26" (1/3) ... [2021-12-28 04:19:34,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257d5ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:19:34, skipping insertion in model container [2021-12-28 04:19:34,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:19:28" (2/3) ... [2021-12-28 04:19:34,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257d5ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:19:34, skipping insertion in model container [2021-12-28 04:19:34,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:19:34" (3/3) ... [2021-12-28 04:19:34,371 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2021-12-28 04:19:34,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:19:34,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:19:34,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:19:34,432 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 04:19:34,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:19:34,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 1463 states, 1031 states have (on average 1.3773035887487877) internal successors, (1420), 1075 states have internal predecessors, (1420), 343 states have call successors, (343), 88 states have call predecessors, (343), 87 states have return successors, (337), 331 states have call predecessors, (337), 337 states have call successors, (337) [2021-12-28 04:19:34,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-28 04:19:34,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:19:34,481 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:19:34,481 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:19:34,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:19:34,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1642665137, now seen corresponding path program 1 times [2021-12-28 04:19:34,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:19:34,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802807718] [2021-12-28 04:19:34,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:19:34,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:19:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:34,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:19:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:34,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:19:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:34,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:34,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:34,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 04:19:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:19:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:35,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 04:19:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:35,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 04:19:35,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:19:35,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802807718] [2021-12-28 04:19:35,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802807718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:19:35,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:19:35,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:19:35,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949822481] [2021-12-28 04:19:35,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:19:35,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:19:35,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:19:35,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:19:35,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:19:35,099 INFO L87 Difference]: Start difference. First operand has 1463 states, 1031 states have (on average 1.3773035887487877) internal successors, (1420), 1075 states have internal predecessors, (1420), 343 states have call successors, (343), 88 states have call predecessors, (343), 87 states have return successors, (337), 331 states have call predecessors, (337), 337 states have call successors, (337) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:19:39,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:19:39,598 INFO L93 Difference]: Finished difference Result 3235 states and 4838 transitions. [2021-12-28 04:19:39,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 04:19:39,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2021-12-28 04:19:39,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:19:39,627 INFO L225 Difference]: With dead ends: 3235 [2021-12-28 04:19:39,628 INFO L226 Difference]: Without dead ends: 1750 [2021-12-28 04:19:39,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:19:39,643 INFO L933 BasicCegarLoop]: 1966 mSDtfsCounter, 934 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 4606 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:19:39,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 4606 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-28 04:19:39,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2021-12-28 04:19:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1438. [2021-12-28 04:19:39,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1014 states have (on average 1.3629191321499015) internal successors, (1382), 1050 states have internal predecessors, (1382), 337 states have call successors, (337), 87 states have call predecessors, (337), 86 states have return successors, (328), 322 states have call predecessors, (328), 328 states have call successors, (328) [2021-12-28 04:19:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2047 transitions. [2021-12-28 04:19:39,762 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2047 transitions. Word has length 84 [2021-12-28 04:19:39,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:19:39,763 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 2047 transitions. [2021-12-28 04:19:39,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:19:39,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2047 transitions. [2021-12-28 04:19:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-28 04:19:39,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:19:39,776 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:19:39,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:19:39,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:19:39,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:19:39,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2002176851, now seen corresponding path program 1 times [2021-12-28 04:19:39,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:19:39,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981436308] [2021-12-28 04:19:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:19:39,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:19:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:19:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:39,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:39,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:39,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:19:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:39,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 04:19:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:39,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:39,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:19:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:39,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:39,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 04:19:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 04:19:40,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:19:40,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981436308] [2021-12-28 04:19:40,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981436308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:19:40,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:19:40,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:19:40,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034415624] [2021-12-28 04:19:40,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:19:40,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:19:40,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:19:40,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:19:40,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:19:40,007 INFO L87 Difference]: Start difference. First operand 1438 states and 2047 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-28 04:19:43,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:19:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:19:48,100 INFO L93 Difference]: Finished difference Result 4860 states and 7153 transitions. [2021-12-28 04:19:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:19:48,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 84 [2021-12-28 04:19:48,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:19:48,123 INFO L225 Difference]: With dead ends: 4860 [2021-12-28 04:19:48,123 INFO L226 Difference]: Without dead ends: 3442 [2021-12-28 04:19:48,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:19:48,132 INFO L933 BasicCegarLoop]: 2247 mSDtfsCounter, 3696 mSDsluCounter, 3470 mSDsCounter, 0 mSdLazyCounter, 2973 mSolverCounterSat, 2174 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3960 SdHoareTripleChecker+Valid, 5717 SdHoareTripleChecker+Invalid, 5148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2174 IncrementalHoareTripleChecker+Valid, 2973 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-12-28 04:19:48,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3960 Valid, 5717 Invalid, 5148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2174 Valid, 2973 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-12-28 04:19:48,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2021-12-28 04:19:48,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 2799. [2021-12-28 04:19:48,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 1977 states have (on average 1.3641881638846738) internal successors, (2697), 2043 states have internal predecessors, (2697), 651 states have call successors, (651), 171 states have call predecessors, (651), 170 states have return successors, (642), 628 states have call predecessors, (642), 642 states have call successors, (642) [2021-12-28 04:19:48,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3990 transitions. [2021-12-28 04:19:48,249 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3990 transitions. Word has length 84 [2021-12-28 04:19:48,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:19:48,250 INFO L470 AbstractCegarLoop]: Abstraction has 2799 states and 3990 transitions. [2021-12-28 04:19:48,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-28 04:19:48,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3990 transitions. [2021-12-28 04:19:48,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-28 04:19:48,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:19:48,254 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:19:48,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:19:48,254 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:19:48,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:19:48,254 INFO L85 PathProgramCache]: Analyzing trace with hash 21875653, now seen corresponding path program 1 times [2021-12-28 04:19:48,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:19:48,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019836528] [2021-12-28 04:19:48,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:19:48,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:19:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:48,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:19:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:48,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:48,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:48,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:19:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:48,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:48,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:48,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 04:19:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:48,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:48,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:19:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:48,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 04:19:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:48,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 04:19:48,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:19:48,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019836528] [2021-12-28 04:19:48,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019836528] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:19:48,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:19:48,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:19:48,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047796317] [2021-12-28 04:19:48,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:19:48,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:19:48,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:19:48,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:19:48,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:19:48,515 INFO L87 Difference]: Start difference. First operand 2799 states and 3990 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:19:50,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:19:53,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:19:53,529 INFO L93 Difference]: Finished difference Result 3436 states and 5120 transitions. [2021-12-28 04:19:53,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 04:19:53,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2021-12-28 04:19:53,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:19:53,549 INFO L225 Difference]: With dead ends: 3436 [2021-12-28 04:19:53,549 INFO L226 Difference]: Without dead ends: 3433 [2021-12-28 04:19:53,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:19:53,556 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 3474 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 1817 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3696 SdHoareTripleChecker+Valid, 2976 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1817 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-28 04:19:53,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3696 Valid, 2976 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1817 Valid, 950 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-12-28 04:19:53,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2021-12-28 04:19:53,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 2806. [2021-12-28 04:19:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 1983 states have (on average 1.3635905194150277) internal successors, (2704), 2048 states have internal predecessors, (2704), 650 states have call successors, (650), 173 states have call predecessors, (650), 172 states have return successors, (642), 628 states have call predecessors, (642), 642 states have call successors, (642) [2021-12-28 04:19:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3996 transitions. [2021-12-28 04:19:53,649 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3996 transitions. Word has length 87 [2021-12-28 04:19:53,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:19:53,650 INFO L470 AbstractCegarLoop]: Abstraction has 2806 states and 3996 transitions. [2021-12-28 04:19:53,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:19:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3996 transitions. [2021-12-28 04:19:53,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-28 04:19:53,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:19:53,652 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:19:53,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:19:53,652 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:19:53,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:19:53,652 INFO L85 PathProgramCache]: Analyzing trace with hash 677651121, now seen corresponding path program 1 times [2021-12-28 04:19:53,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:19:53,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094051454] [2021-12-28 04:19:53,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:19:53,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:19:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:53,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:19:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:19:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:53,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:53,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:53,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 04:19:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:53,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:53,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:19:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:53,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 04:19:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:53,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 04:19:53,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:19:53,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094051454] [2021-12-28 04:19:53,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094051454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:19:53,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:19:53,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:19:53,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130751574] [2021-12-28 04:19:53,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:19:53,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:19:53,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:19:53,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:19:53,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:19:53,901 INFO L87 Difference]: Start difference. First operand 2806 states and 3996 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:19:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:19:57,081 INFO L93 Difference]: Finished difference Result 3435 states and 5118 transitions. [2021-12-28 04:19:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:19:57,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2021-12-28 04:19:57,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:19:57,100 INFO L225 Difference]: With dead ends: 3435 [2021-12-28 04:19:57,101 INFO L226 Difference]: Without dead ends: 3432 [2021-12-28 04:19:57,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:19:57,105 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 2895 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 1280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 3841 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1280 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:19:57,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3114 Valid, 3841 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1280 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-28 04:19:57,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2021-12-28 04:19:57,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 2805. [2021-12-28 04:19:57,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 1983 states have (on average 1.3630862329803328) internal successors, (2703), 2047 states have internal predecessors, (2703), 649 states have call successors, (649), 173 states have call predecessors, (649), 172 states have return successors, (642), 628 states have call predecessors, (642), 642 states have call successors, (642) [2021-12-28 04:19:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3994 transitions. [2021-12-28 04:19:57,222 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3994 transitions. Word has length 88 [2021-12-28 04:19:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:19:57,224 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3994 transitions. [2021-12-28 04:19:57,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:19:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3994 transitions. [2021-12-28 04:19:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-28 04:19:57,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:19:57,225 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:19:57,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 04:19:57,226 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:19:57,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:19:57,226 INFO L85 PathProgramCache]: Analyzing trace with hash -468140984, now seen corresponding path program 1 times [2021-12-28 04:19:57,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:19:57,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496298542] [2021-12-28 04:19:57,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:19:57,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:19:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:57,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:19:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:57,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:57,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:19:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:57,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:19:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:57,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 04:19:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:57,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:19:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:57,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 04:19:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:57,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:19:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:19:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 04:19:57,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:19:57,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496298542] [2021-12-28 04:19:57,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496298542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:19:57,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:19:57,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:19:57,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980570356] [2021-12-28 04:19:57,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:19:57,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:19:57,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:19:57,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:19:57,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:19:57,405 INFO L87 Difference]: Start difference. First operand 2805 states and 3994 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:20:00,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:20:03,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:20:03,725 INFO L93 Difference]: Finished difference Result 4934 states and 7249 transitions. [2021-12-28 04:20:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:20:03,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2021-12-28 04:20:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:20:03,749 INFO L225 Difference]: With dead ends: 4934 [2021-12-28 04:20:03,750 INFO L226 Difference]: Without dead ends: 4930 [2021-12-28 04:20:03,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:20:03,755 INFO L933 BasicCegarLoop]: 2416 mSDtfsCounter, 3967 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 2098 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 4324 SdHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2098 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:20:03,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4204 Valid, 4324 Invalid, 3745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2098 Valid, 1646 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-12-28 04:20:03,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4930 states. [2021-12-28 04:20:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4930 to 4085. [2021-12-28 04:20:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4085 states, 2883 states have (on average 1.353451266042317) internal successors, (3902), 2967 states have internal predecessors, (3902), 923 states have call successors, (923), 279 states have call predecessors, (923), 278 states have return successors, (918), 898 states have call predecessors, (918), 918 states have call successors, (918) [2021-12-28 04:20:03,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4085 states to 4085 states and 5743 transitions. [2021-12-28 04:20:03,902 INFO L78 Accepts]: Start accepts. Automaton has 4085 states and 5743 transitions. Word has length 89 [2021-12-28 04:20:03,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:20:03,902 INFO L470 AbstractCegarLoop]: Abstraction has 4085 states and 5743 transitions. [2021-12-28 04:20:03,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:20:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 4085 states and 5743 transitions. [2021-12-28 04:20:03,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-28 04:20:03,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:20:03,905 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:20:03,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 04:20:03,906 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:20:03,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:20:03,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1627953004, now seen corresponding path program 1 times [2021-12-28 04:20:03,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:20:03,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282366762] [2021-12-28 04:20:03,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:20:03,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:20:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:03,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:20:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:04,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:04,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:20:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:04,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:20:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:04,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:04,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:20:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:04,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 04:20:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:04,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:04,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:20:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:04,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:04,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 04:20:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:04,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 04:20:04,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:20:04,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282366762] [2021-12-28 04:20:04,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282366762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:20:04,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:20:04,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:20:04,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102350182] [2021-12-28 04:20:04,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:20:04,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:20:04,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:20:04,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:20:04,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:20:04,083 INFO L87 Difference]: Start difference. First operand 4085 states and 5743 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:20:08,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:20:08,621 INFO L93 Difference]: Finished difference Result 4966 states and 7280 transitions. [2021-12-28 04:20:08,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:20:08,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2021-12-28 04:20:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:20:08,647 INFO L225 Difference]: With dead ends: 4966 [2021-12-28 04:20:08,647 INFO L226 Difference]: Without dead ends: 4962 [2021-12-28 04:20:08,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:20:08,654 INFO L933 BasicCegarLoop]: 1887 mSDtfsCounter, 2848 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 1278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3056 SdHoareTripleChecker+Valid, 4499 SdHoareTripleChecker+Invalid, 3381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1278 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:20:08,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3056 Valid, 4499 Invalid, 3381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1278 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-28 04:20:08,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2021-12-28 04:20:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4117. [2021-12-28 04:20:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4117 states, 2903 states have (on average 1.3499827764381673) internal successors, (3919), 2985 states have internal predecessors, (3919), 929 states have call successors, (929), 285 states have call predecessors, (929), 284 states have return successors, (926), 906 states have call predecessors, (926), 926 states have call successors, (926) [2021-12-28 04:20:08,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4117 states to 4117 states and 5774 transitions. [2021-12-28 04:20:08,837 INFO L78 Accepts]: Start accepts. Automaton has 4117 states and 5774 transitions. Word has length 90 [2021-12-28 04:20:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:20:08,838 INFO L470 AbstractCegarLoop]: Abstraction has 4117 states and 5774 transitions. [2021-12-28 04:20:08,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:20:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4117 states and 5774 transitions. [2021-12-28 04:20:08,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-28 04:20:08,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:20:08,841 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:20:08,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 04:20:08,841 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:20:08,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:20:08,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1072584907, now seen corresponding path program 1 times [2021-12-28 04:20:08,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:20:08,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406397516] [2021-12-28 04:20:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:20:08,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:20:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:20:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:08,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:08,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:20:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:08,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:20:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:08,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:08,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:20:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:08,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 04:20:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:08,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:08,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:20:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:08,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:08,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 04:20:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:09,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 04:20:09,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:20:09,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406397516] [2021-12-28 04:20:09,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406397516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:20:09,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:20:09,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:20:09,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149554257] [2021-12-28 04:20:09,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:20:09,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:20:09,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:20:09,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:20:09,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:20:09,012 INFO L87 Difference]: Start difference. First operand 4117 states and 5774 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:20:11,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:20:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:20:14,117 INFO L93 Difference]: Finished difference Result 4962 states and 7274 transitions. [2021-12-28 04:20:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 04:20:14,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2021-12-28 04:20:14,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:20:14,151 INFO L225 Difference]: With dead ends: 4962 [2021-12-28 04:20:14,151 INFO L226 Difference]: Without dead ends: 4946 [2021-12-28 04:20:14,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:20:14,157 INFO L933 BasicCegarLoop]: 1885 mSDtfsCounter, 3452 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 1791 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3676 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1791 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-28 04:20:14,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3676 Valid, 2961 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1791 Valid, 951 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-12-28 04:20:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-12-28 04:20:14,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4103. [2021-12-28 04:20:14,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 2892 states have (on average 1.3499308437067774) internal successors, (3904), 2972 states have internal predecessors, (3904), 926 states have call successors, (926), 285 states have call predecessors, (926), 284 states have return successors, (924), 905 states have call predecessors, (924), 924 states have call successors, (924) [2021-12-28 04:20:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 5754 transitions. [2021-12-28 04:20:14,327 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 5754 transitions. Word has length 91 [2021-12-28 04:20:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:20:14,327 INFO L470 AbstractCegarLoop]: Abstraction has 4103 states and 5754 transitions. [2021-12-28 04:20:14,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:20:14,328 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 5754 transitions. [2021-12-28 04:20:14,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-28 04:20:14,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:20:14,333 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:20:14,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 04:20:14,333 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:20:14,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:20:14,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2051341802, now seen corresponding path program 1 times [2021-12-28 04:20:14,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:20:14,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099960353] [2021-12-28 04:20:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:20:14,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:20:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:20:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:20:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:20:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:20:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 04:20:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:20:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 04:20:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 04:20:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:20:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 04:20:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:20:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:20:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 04:20:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 04:20:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:20:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-28 04:20:14,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:20:14,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099960353] [2021-12-28 04:20:14,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099960353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:20:14,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:20:14,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 04:20:14,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087368635] [2021-12-28 04:20:14,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:20:14,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 04:20:14,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:20:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 04:20:14,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:20:14,567 INFO L87 Difference]: Start difference. First operand 4103 states and 5754 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-28 04:20:22,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:20:26,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:20:29,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []