./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1264b42ba0b5dcb83ee2e2b35dfcd5adbd8a3fb1fa3fff4328b672883ffa55c1 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 04:21:21,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 04:21:21,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 04:21:21,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 04:21:21,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 04:21:21,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 04:21:21,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 04:21:21,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 04:21:21,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 04:21:21,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 04:21:21,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 04:21:21,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 04:21:21,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 04:21:21,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 04:21:21,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 04:21:21,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 04:21:21,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 04:21:21,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 04:21:21,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 04:21:21,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 04:21:21,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 04:21:21,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 04:21:21,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 04:21:21,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 04:21:21,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 04:21:21,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 04:21:21,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 04:21:21,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 04:21:21,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 04:21:21,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 04:21:21,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 04:21:21,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 04:21:21,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 04:21:21,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 04:21:21,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 04:21:21,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 04:21:21,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 04:21:21,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 04:21:21,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 04:21:21,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 04:21:21,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 04:21:21,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 04:21:21,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 04:21:21,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 04:21:21,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 04:21:21,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 04:21:21,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 04:21:21,327 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 04:21:21,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 04:21:21,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 04:21:21,328 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 04:21:21,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 04:21:21,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 04:21:21,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 04:21:21,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 04:21:21,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 04:21:21,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 04:21:21,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 04:21:21,329 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 04:21:21,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 04:21:21,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 04:21:21,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 04:21:21,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 04:21:21,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:21:21,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 04:21:21,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 04:21:21,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 04:21:21,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 04:21:21,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 04:21:21,331 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 04:21:21,332 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 04:21:21,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 04:21:21,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 04:21:21,332 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1264b42ba0b5dcb83ee2e2b35dfcd5adbd8a3fb1fa3fff4328b672883ffa55c1 [2021-12-16 04:21:21,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 04:21:21,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 04:21:21,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 04:21:21,526 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 04:21:21,527 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 04:21:21,528 INFO L432 ainManager$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 [2021-12-16 04:21:21,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4771ce4bf/be1fcc0cbd6f4dde9a5d2a674d92fadb/FLAG0a5251013 [2021-12-16 04:21:22,182 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 04:21:22,183 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 [2021-12-16 04:21:22,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4771ce4bf/be1fcc0cbd6f4dde9a5d2a674d92fadb/FLAG0a5251013 [2021-12-16 04:21:22,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4771ce4bf/be1fcc0cbd6f4dde9a5d2a674d92fadb [2021-12-16 04:21:22,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 04:21:22,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 04:21:22,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 04:21:22,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 04:21:22,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 04:21:22,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:21:22" (1/1) ... [2021-12-16 04:21:22,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e2a78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:22, skipping insertion in model container [2021-12-16 04:21:22,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:21:22" (1/1) ... [2021-12-16 04:21:22,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 04:21:22,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 04:21:23,741 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] [2021-12-16 04:21:23,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:21:23,844 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 04:21:24,058 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] [2021-12-16 04:21:24,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:21:24,124 INFO L208 MainTranslator]: Completed translation [2021-12-16 04:21:24,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:24 WrapperNode [2021-12-16 04:21:24,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 04:21:24,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 04:21:24,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 04:21:24,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 04:21:24,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:24" (1/1) ... [2021-12-16 04:21:24,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:24" (1/1) ... [2021-12-16 04:21:24,304 INFO L137 Inliner]: procedures = 306, calls = 1743, calls flagged for inlining = 109, calls inlined = 100, statements flattened = 3797 [2021-12-16 04:21:24,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 04:21:24,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 04:21:24,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 04:21:24,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 04:21:24,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:24" (1/1) ... [2021-12-16 04:21:24,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:24" (1/1) ... [2021-12-16 04:21:24,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:24" (1/1) ... [2021-12-16 04:21:24,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:24" (1/1) ... [2021-12-16 04:21:24,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:24" (1/1) ... [2021-12-16 04:21:24,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:24" (1/1) ... [2021-12-16 04:21:24,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:24" (1/1) ... [2021-12-16 04:21:24,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 04:21:24,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 04:21:24,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 04:21:24,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 04:21:24,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:24" (1/1) ... [2021-12-16 04:21:24,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:21:24,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 04:21:24,524 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) [2021-12-16 04:21:24,543 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 [2021-12-16 04:21:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-16 04:21:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-16 04:21:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_memstick_host [2021-12-16 04:21:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_memstick_host [2021-12-16 04:21:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-16 04:21:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-16 04:21:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 04:21:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 04:21:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-16 04:21:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-16 04:21:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure msb_stop [2021-12-16 04:21:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_stop [2021-12-16 04:21:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure msb_get_zone_from_pba [2021-12-16 04:21:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_get_zone_from_pba [2021-12-16 04:21:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-16 04:21:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-16 04:21:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 04:21:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 04:21:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure blk_fetch_request [2021-12-16 04:21:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_fetch_request [2021-12-16 04:21:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-16 04:21:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-16 04:21:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-12-16 04:21:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-12-16 04:21:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 04:21:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 04:21:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 04:21:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 04:21:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure msb_switch_to_parallel [2021-12-16 04:21:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_switch_to_parallel [2021-12-16 04:21:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 04:21:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 04:21:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 04:21:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 04:21:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure msb_validate_used_block_bitmap [2021-12-16 04:21:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_validate_used_block_bitmap [2021-12-16 04:21:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-16 04:21:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-16 04:21:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure msb_verify_block [2021-12-16 04:21:24,560 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_verify_block [2021-12-16 04:21:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-16 04:21:24,560 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-16 04:21:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2021-12-16 04:21:24,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2021-12-16 04:21:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_msb_disk_lock [2021-12-16 04:21:24,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_msb_disk_lock [2021-12-16 04:21:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 04:21:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_write [2021-12-16 04:21:24,561 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_write [2021-12-16 04:21:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-16 04:21:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-12-16 04:21:24,561 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-12-16 04:21:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure memstick_set_drvdata [2021-12-16 04:21:24,561 INFO L138 BoogieDeclarations]: Found implementation of procedure memstick_set_drvdata [2021-12-16 04:21:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request [2021-12-16 04:21:24,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request [2021-12-16 04:21:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 04:21:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-16 04:21:24,562 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-16 04:21:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure msb_invalidate_reg_window [2021-12-16 04:21:24,562 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_invalidate_reg_window [2021-12-16 04:21:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure msb_io_work [2021-12-16 04:21:24,562 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_io_work [2021-12-16 04:21:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-16 04:21:24,563 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-16 04:21:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2021-12-16 04:21:24,563 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2021-12-16 04:21:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 04:21:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure msb_erase_block [2021-12-16 04:21:24,563 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_erase_block [2021-12-16 04:21:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 04:21:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure memstick_get_drvdata [2021-12-16 04:21:24,563 INFO L138 BoogieDeclarations]: Found implementation of procedure memstick_get_drvdata [2021-12-16 04:21:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure msb_data_clear [2021-12-16 04:21:24,564 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_data_clear [2021-12-16 04:21:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-16 04:21:24,564 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-16 04:21:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-16 04:21:24,564 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-16 04:21:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-16 04:21:24,564 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-16 04:21:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-16 04:21:24,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-16 04:21:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-16 04:21:24,565 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-16 04:21:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure msb_read_bad_block_table [2021-12-16 04:21:24,565 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_read_bad_block_table [2021-12-16 04:21:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure msb_update_block [2021-12-16 04:21:24,565 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_update_block [2021-12-16 04:21:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_flush [2021-12-16 04:21:24,565 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_flush [2021-12-16 04:21:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_next [2021-12-16 04:21:24,566 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_next [2021-12-16 04:21:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-12-16 04:21:24,566 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-12-16 04:21:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_start [2021-12-16 04:21:24,566 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_start [2021-12-16 04:21:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure msb_run_state_machine [2021-12-16 04:21:24,566 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_run_state_machine [2021-12-16 04:21:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure msb_sg_copy [2021-12-16 04:21:24,566 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_sg_copy [2021-12-16 04:21:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-12-16 04:21:24,567 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-12-16 04:21:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-16 04:21:24,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-16 04:21:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_zero_bit [2021-12-16 04:21:24,567 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_zero_bit [2021-12-16 04:21:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_memstick_host [2021-12-16 04:21:24,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_memstick_host [2021-12-16 04:21:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 04:21:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-16 04:21:24,568 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-16 04:21:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure msb_get_zone_from_lba [2021-12-16 04:21:24,568 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_get_zone_from_lba [2021-12-16 04:21:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure msb_reset [2021-12-16 04:21:24,568 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_reset [2021-12-16 04:21:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2021-12-16 04:21:24,568 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2021-12-16 04:21:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2021-12-16 04:21:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_queue [2021-12-16 04:21:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 04:21:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 04:21:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2021-12-16 04:21:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2021-12-16 04:21:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure msb_bd_getgeo [2021-12-16 04:21:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_bd_getgeo [2021-12-16 04:21:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 04:21:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure msb_remove [2021-12-16 04:21:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_remove [2021-12-16 04:21:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 04:21:24,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 04:21:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2021-12-16 04:21:24,570 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2021-12-16 04:21:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure msb_mark_bad [2021-12-16 04:21:24,570 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_mark_bad [2021-12-16 04:21:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-16 04:21:24,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-16 04:21:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 04:21:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_2 [2021-12-16 04:21:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_2 [2021-12-16 04:21:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-16 04:21:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-16 04:21:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 04:21:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure sg_nents [2021-12-16 04:21:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_nents [2021-12-16 04:21:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 04:21:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure msb_read_page [2021-12-16 04:21:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_read_page [2021-12-16 04:21:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2021-12-16 04:21:24,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2021-12-16 04:21:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_stop [2021-12-16 04:21:24,572 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_stop [2021-12-16 04:21:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure msb_set_overwrite_flag [2021-12-16 04:21:24,572 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_set_overwrite_flag [2021-12-16 04:21:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_bytes [2021-12-16 04:21:24,572 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_bytes [2021-12-16 04:21:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-12-16 04:21:24,572 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-12-16 04:21:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure msb_disk_release [2021-12-16 04:21:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_disk_release [2021-12-16 04:21:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure msb_mark_block_used [2021-12-16 04:21:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_mark_block_used [2021-12-16 04:21:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_discard [2021-12-16 04:21:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_discard [2021-12-16 04:21:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-16 04:21:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-16 04:21:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure msb_start [2021-12-16 04:21:24,574 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_start [2021-12-16 04:21:24,574 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-16 04:21:24,574 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-16 04:21:24,574 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2021-12-16 04:21:24,574 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2021-12-16 04:21:24,574 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-12-16 04:21:24,574 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-12-16 04:21:24,574 INFO L130 BoogieDeclarations]: Found specification of procedure msb_init_card [2021-12-16 04:21:24,574 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_init_card [2021-12-16 04:21:24,574 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2021-12-16 04:21:24,575 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2021-12-16 04:21:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-16 04:21:24,575 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-16 04:21:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 04:21:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_one [2021-12-16 04:21:24,575 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_one [2021-12-16 04:21:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-12-16 04:21:24,575 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-12-16 04:21:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_msb_disk_lock [2021-12-16 04:21:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_msb_disk_lock [2021-12-16 04:21:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 04:21:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 04:21:25,030 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 04:21:25,032 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 04:21:25,236 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 04:21:26,687 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 04:21:26,705 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 04:21:26,706 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 04:21:26,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:21:26 BoogieIcfgContainer [2021-12-16 04:21:26,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 04:21:26,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 04:21:26,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 04:21:26,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 04:21:26,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:21:22" (1/3) ... [2021-12-16 04:21:26,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b7c6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:21:26, skipping insertion in model container [2021-12-16 04:21:26,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:24" (2/3) ... [2021-12-16 04:21:26,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b7c6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:21:26, skipping insertion in model container [2021-12-16 04:21:26,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:21:26" (3/3) ... [2021-12-16 04:21:26,716 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2021-12-16 04:21:26,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 04:21:26,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 04:21:26,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 04:21:26,769 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 [2021-12-16 04:21:26,770 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 04:21:26,801 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) [2021-12-16 04:21:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-16 04:21:26,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:26,809 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] [2021-12-16 04:21:26,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:26,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:26,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1642665137, now seen corresponding path program 1 times [2021-12-16 04:21:26,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:26,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906365519] [2021-12-16 04:21:26,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:26,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:27,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:27,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:27,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:27,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:27,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:27,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:27,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 04:21:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:27,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:27,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 04:21:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:27,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:27,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 04:21:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:27,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-16 04:21:27,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:27,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906365519] [2021-12-16 04:21:27,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906365519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:27,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:27,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:21:27,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486050840] [2021-12-16 04:21:27,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:27,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:21:27,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:21:27,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:21:27,326 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) [2021-12-16 04:21:30,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:30,268 INFO L93 Difference]: Finished difference Result 3235 states and 4838 transitions. [2021-12-16 04:21:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 04:21:30,271 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 [2021-12-16 04:21:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:30,290 INFO L225 Difference]: With dead ends: 3235 [2021-12-16 04:21:30,291 INFO L226 Difference]: Without dead ends: 1750 [2021-12-16 04:21:30,304 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 [2021-12-16 04:21:30,310 INFO L933 BasicCegarLoop]: 1970 mSDtfsCounter, 934 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 4627 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:30,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 4627 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-16 04:21:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2021-12-16 04:21:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1438. [2021-12-16 04:21:30,434 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) [2021-12-16 04:21:30,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2047 transitions. [2021-12-16 04:21:30,446 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2047 transitions. Word has length 84 [2021-12-16 04:21:30,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:30,446 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 2047 transitions. [2021-12-16 04:21:30,446 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) [2021-12-16 04:21:30,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2047 transitions. [2021-12-16 04:21:30,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-16 04:21:30,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:30,450 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] [2021-12-16 04:21:30,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 04:21:30,450 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:30,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:30,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2002176851, now seen corresponding path program 1 times [2021-12-16 04:21:30,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:30,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502444695] [2021-12-16 04:21:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:30,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:30,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:30,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:30,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 04:21:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 04:21:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:30,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 04:21:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:30,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-16 04:21:30,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:30,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502444695] [2021-12-16 04:21:30,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502444695] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:30,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:30,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:21:30,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163437343] [2021-12-16 04:21:30,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:30,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:21:30,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:30,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:21:30,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:30,705 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) [2021-12-16 04:21:35,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:35,073 INFO L93 Difference]: Finished difference Result 4860 states and 7153 transitions. [2021-12-16 04:21:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:21:35,073 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 [2021-12-16 04:21:35,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:35,095 INFO L225 Difference]: With dead ends: 4860 [2021-12-16 04:21:35,095 INFO L226 Difference]: Without dead ends: 3442 [2021-12-16 04:21:35,104 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 [2021-12-16 04:21:35,106 INFO L933 BasicCegarLoop]: 2251 mSDtfsCounter, 3696 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 2730 mSolverCounterSat, 2172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3957 SdHoareTripleChecker+Valid, 5976 SdHoareTripleChecker+Invalid, 4902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2172 IncrementalHoareTripleChecker+Valid, 2730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:35,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3957 Valid, 5976 Invalid, 4902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2172 Valid, 2730 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-16 04:21:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2021-12-16 04:21:35,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 2799. [2021-12-16 04:21:35,234 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) [2021-12-16 04:21:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3990 transitions. [2021-12-16 04:21:35,277 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3990 transitions. Word has length 84 [2021-12-16 04:21:35,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:35,278 INFO L470 AbstractCegarLoop]: Abstraction has 2799 states and 3990 transitions. [2021-12-16 04:21:35,278 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) [2021-12-16 04:21:35,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3990 transitions. [2021-12-16 04:21:35,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-16 04:21:35,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:35,280 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] [2021-12-16 04:21:35,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 04:21:35,281 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:35,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:35,282 INFO L85 PathProgramCache]: Analyzing trace with hash 21875653, now seen corresponding path program 1 times [2021-12-16 04:21:35,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:35,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210748407] [2021-12-16 04:21:35,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:35,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 04:21:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 04:21:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 04:21:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-16 04:21:35,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:35,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210748407] [2021-12-16 04:21:35,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210748407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:35,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:35,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:21:35,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898537760] [2021-12-16 04:21:35,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:35,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:21:35,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:35,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:21:35,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:35,437 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) [2021-12-16 04:21:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:37,625 INFO L93 Difference]: Finished difference Result 3422 states and 5106 transitions. [2021-12-16 04:21:37,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:21:37,626 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 [2021-12-16 04:21:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:37,645 INFO L225 Difference]: With dead ends: 3422 [2021-12-16 04:21:37,645 INFO L226 Difference]: Without dead ends: 3419 [2021-12-16 04:21:37,649 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 [2021-12-16 04:21:37,653 INFO L933 BasicCegarLoop]: 1899 mSDtfsCounter, 3473 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 1814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3692 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1814 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:37,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3692 Valid, 2979 Invalid, 2761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1814 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-16 04:21:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2021-12-16 04:21:37,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 2798. [2021-12-16 04:21:37,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 1977 states have (on average 1.3636823469903894) internal successors, (2696), 2042 states have internal predecessors, (2696), 650 states have call successors, (650), 171 states have call predecessors, (650), 170 states have return successors, (642), 628 states have call predecessors, (642), 642 states have call successors, (642) [2021-12-16 04:21:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 3988 transitions. [2021-12-16 04:21:37,756 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 3988 transitions. Word has length 87 [2021-12-16 04:21:37,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:37,758 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 3988 transitions. [2021-12-16 04:21:37,758 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) [2021-12-16 04:21:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 3988 transitions. [2021-12-16 04:21:37,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-16 04:21:37,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:37,762 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] [2021-12-16 04:21:37,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 04:21:37,762 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:37,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:37,763 INFO L85 PathProgramCache]: Analyzing trace with hash 677651121, now seen corresponding path program 1 times [2021-12-16 04:21:37,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:37,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382013490] [2021-12-16 04:21:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:37,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 04:21:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 04:21:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 04:21:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-16 04:21:37,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:37,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382013490] [2021-12-16 04:21:37,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382013490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:37,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:37,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:21:37,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098402992] [2021-12-16 04:21:37,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:37,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:21:37,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:37,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:21:37,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:37,981 INFO L87 Difference]: Start difference. First operand 2798 states and 3988 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 04:21:40,420 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 [] [2021-12-16 04:21:43,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:43,090 INFO L93 Difference]: Finished difference Result 3435 states and 5118 transitions. [2021-12-16 04:21:43,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 04:21:43,091 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 [2021-12-16 04:21:43,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:43,107 INFO L225 Difference]: With dead ends: 3435 [2021-12-16 04:21:43,107 INFO L226 Difference]: Without dead ends: 3432 [2021-12-16 04:21:43,111 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 [2021-12-16 04:21:43,111 INFO L933 BasicCegarLoop]: 1894 mSDtfsCounter, 3148 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 1362 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3372 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 2873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1362 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:43,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3372 Valid, 3615 Invalid, 2873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1362 Valid, 1510 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-12-16 04:21:43,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2021-12-16 04:21:43,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 2805. [2021-12-16 04:21:43,197 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) [2021-12-16 04:21:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3994 transitions. [2021-12-16 04:21:43,208 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3994 transitions. Word has length 88 [2021-12-16 04:21:43,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:43,210 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3994 transitions. [2021-12-16 04:21:43,210 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) [2021-12-16 04:21:43,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3994 transitions. [2021-12-16 04:21:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-16 04:21:43,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:43,212 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] [2021-12-16 04:21:43,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 04:21:43,212 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:43,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:43,213 INFO L85 PathProgramCache]: Analyzing trace with hash -468140984, now seen corresponding path program 1 times [2021-12-16 04:21:43,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:43,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173313439] [2021-12-16 04:21:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:43,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:43,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:43,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:43,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 04:21:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:43,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:43,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 04:21:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:43,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 04:21:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-16 04:21:43,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:43,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173313439] [2021-12-16 04:21:43,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173313439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:43,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:43,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:21:43,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981658806] [2021-12-16 04:21:43,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:43,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:21:43,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:21:43,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:43,386 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) [2021-12-16 04:21:46,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:46,768 INFO L93 Difference]: Finished difference Result 4934 states and 7249 transitions. [2021-12-16 04:21:46,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:21:46,769 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 [2021-12-16 04:21:46,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:46,794 INFO L225 Difference]: With dead ends: 4934 [2021-12-16 04:21:46,795 INFO L226 Difference]: Without dead ends: 4930 [2021-12-16 04:21:46,799 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 [2021-12-16 04:21:46,800 INFO L933 BasicCegarLoop]: 2424 mSDtfsCounter, 3961 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 2093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4196 SdHoareTripleChecker+Valid, 4463 SdHoareTripleChecker+Invalid, 3613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2093 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:46,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4196 Valid, 4463 Invalid, 3613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2093 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-16 04:21:46,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4930 states. [2021-12-16 04:21:46,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4930 to 4085. [2021-12-16 04:21:46,932 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) [2021-12-16 04:21:47,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4085 states to 4085 states and 5743 transitions. [2021-12-16 04:21:47,011 INFO L78 Accepts]: Start accepts. Automaton has 4085 states and 5743 transitions. Word has length 89 [2021-12-16 04:21:47,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:47,011 INFO L470 AbstractCegarLoop]: Abstraction has 4085 states and 5743 transitions. [2021-12-16 04:21:47,011 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) [2021-12-16 04:21:47,011 INFO L276 IsEmpty]: Start isEmpty. Operand 4085 states and 5743 transitions. [2021-12-16 04:21:47,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-16 04:21:47,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:47,013 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] [2021-12-16 04:21:47,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 04:21:47,013 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:47,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:47,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1627953004, now seen corresponding path program 1 times [2021-12-16 04:21:47,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:47,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877937261] [2021-12-16 04:21:47,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:47,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:47,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:47,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:47,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:47,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:47,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:47,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 04:21:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:47,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:47,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 04:21:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:47,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:47,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 04:21:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:47,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-16 04:21:47,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:47,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877937261] [2021-12-16 04:21:47,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877937261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:47,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:47,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:21:47,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094445553] [2021-12-16 04:21:47,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:47,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:21:47,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:47,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:21:47,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:47,189 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) [2021-12-16 04:21:50,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:50,284 INFO L93 Difference]: Finished difference Result 4966 states and 7280 transitions. [2021-12-16 04:21:50,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:21:50,285 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 [2021-12-16 04:21:50,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:50,305 INFO L225 Difference]: With dead ends: 4966 [2021-12-16 04:21:50,306 INFO L226 Difference]: Without dead ends: 4962 [2021-12-16 04:21:50,308 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 [2021-12-16 04:21:50,308 INFO L933 BasicCegarLoop]: 1894 mSDtfsCounter, 2843 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 1281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3879 SdHoareTripleChecker+Invalid, 2810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1281 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:50,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3050 Valid, 3879 Invalid, 2810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1281 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-16 04:21:50,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2021-12-16 04:21:50,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4117. [2021-12-16 04:21:50,434 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) [2021-12-16 04:21:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4117 states to 4117 states and 5774 transitions. [2021-12-16 04:21:50,447 INFO L78 Accepts]: Start accepts. Automaton has 4117 states and 5774 transitions. Word has length 90 [2021-12-16 04:21:50,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:50,448 INFO L470 AbstractCegarLoop]: Abstraction has 4117 states and 5774 transitions. [2021-12-16 04:21:50,449 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) [2021-12-16 04:21:50,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4117 states and 5774 transitions. [2021-12-16 04:21:50,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 04:21:50,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:50,450 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] [2021-12-16 04:21:50,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 04:21:50,450 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:50,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:50,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1072584907, now seen corresponding path program 1 times [2021-12-16 04:21:50,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:50,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461335011] [2021-12-16 04:21:50,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:50,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:50,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:50,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:50,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:50,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:50,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:50,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:50,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 04:21:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:50,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 04:21:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:50,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:50,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 04:21:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:50,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-16 04:21:50,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:50,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461335011] [2021-12-16 04:21:50,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461335011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:50,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:50,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:21:50,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967355376] [2021-12-16 04:21:50,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:50,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:21:50,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:50,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:21:50,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:50,605 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) [2021-12-16 04:21:53,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:53,333 INFO L93 Difference]: Finished difference Result 4962 states and 7274 transitions. [2021-12-16 04:21:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:21:53,333 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 [2021-12-16 04:21:53,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:53,357 INFO L225 Difference]: With dead ends: 4962 [2021-12-16 04:21:53,358 INFO L226 Difference]: Without dead ends: 4946 [2021-12-16 04:21:53,362 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 [2021-12-16 04:21:53,363 INFO L933 BasicCegarLoop]: 1892 mSDtfsCounter, 3130 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 1350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3352 SdHoareTripleChecker+Valid, 3616 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1350 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:53,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3352 Valid, 3616 Invalid, 2848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1350 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-16 04:21:53,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-12-16 04:21:53,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4103. [2021-12-16 04:21:53,489 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) [2021-12-16 04:21:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 5754 transitions. [2021-12-16 04:21:53,503 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 5754 transitions. Word has length 91 [2021-12-16 04:21:53,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:53,503 INFO L470 AbstractCegarLoop]: Abstraction has 4103 states and 5754 transitions. [2021-12-16 04:21:53,503 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) [2021-12-16 04:21:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 5754 transitions. [2021-12-16 04:21:53,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-16 04:21:53,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:53,507 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] [2021-12-16 04:21:53,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 04:21:53,508 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:53,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:53,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2051341802, now seen corresponding path program 1 times [2021-12-16 04:21:53,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:53,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610512705] [2021-12-16 04:21:53,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:53,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 04:21:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 04:21:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 04:21:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 04:21:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 04:21:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 04:21:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 04:21:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-16 04:21:53,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:53,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610512705] [2021-12-16 04:21:53,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610512705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:53,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:53,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 04:21:53,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564684627] [2021-12-16 04:21:53,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:53,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 04:21:53,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:53,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 04:21:53,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 04:21:53,706 INFO L87 Difference]: Start difference. First operand 4103 states and 5754 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 04:21:58,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:58,944 INFO L93 Difference]: Finished difference Result 9035 states and 12990 transitions. [2021-12-16 04:21:58,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 04:21:58,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 144 [2021-12-16 04:21:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:58,968 INFO L225 Difference]: With dead ends: 9035 [2021-12-16 04:21:58,969 INFO L226 Difference]: Without dead ends: 4946 [2021-12-16 04:21:58,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-12-16 04:21:58,984 INFO L933 BasicCegarLoop]: 1661 mSDtfsCounter, 2779 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 5011 mSolverCounterSat, 2092 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3016 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 7103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2092 IncrementalHoareTripleChecker+Valid, 5011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:58,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3016 Valid, 3562 Invalid, 7103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2092 Valid, 5011 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-16 04:21:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-12-16 04:21:59,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4103. [2021-12-16 04:21:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 2892 states have (on average 1.3492392807745506) internal successors, (3902), 2972 states have internal predecessors, (3902), 926 states have call successors, (926), 285 states have call predecessors, (926), 284 states have return successors, (924), 905 states have call predecessors, (924), 924 states have call successors, (924) [2021-12-16 04:21:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 5752 transitions. [2021-12-16 04:21:59,125 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 5752 transitions. Word has length 144 [2021-12-16 04:21:59,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:59,125 INFO L470 AbstractCegarLoop]: Abstraction has 4103 states and 5752 transitions. [2021-12-16 04:21:59,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 04:21:59,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 5752 transitions. [2021-12-16 04:21:59,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-16 04:21:59,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:59,130 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:21:59,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 04:21:59,130 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:59,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:59,131 INFO L85 PathProgramCache]: Analyzing trace with hash -469368472, now seen corresponding path program 1 times [2021-12-16 04:21:59,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:59,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047389354] [2021-12-16 04:21:59,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:59,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 04:21:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 04:21:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 04:21:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 04:21:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 04:21:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 04:21:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-16 04:21:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-16 04:21:59,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:59,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047389354] [2021-12-16 04:21:59,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047389354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:59,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:59,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 04:21:59,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659704811] [2021-12-16 04:21:59,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:59,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 04:21:59,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:59,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 04:21:59,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 04:21:59,374 INFO L87 Difference]: Start difference. First operand 4103 states and 5752 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-16 04:22:05,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:08,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:10,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:22:10,580 INFO L93 Difference]: Finished difference Result 11488 states and 16582 transitions. [2021-12-16 04:22:10,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 04:22:10,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2021-12-16 04:22:10,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:22:10,613 INFO L225 Difference]: With dead ends: 11488 [2021-12-16 04:22:10,614 INFO L226 Difference]: Without dead ends: 7405 [2021-12-16 04:22:10,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-16 04:22:10,627 INFO L933 BasicCegarLoop]: 3212 mSDtfsCounter, 4457 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 5530 mSolverCounterSat, 3556 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4771 SdHoareTripleChecker+Valid, 4823 SdHoareTripleChecker+Invalid, 9088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3556 IncrementalHoareTripleChecker+Valid, 5530 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-12-16 04:22:10,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4771 Valid, 4823 Invalid, 9088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3556 Valid, 5530 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2021-12-16 04:22:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7405 states. [2021-12-16 04:22:10,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7405 to 6136. [2021-12-16 04:22:10,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6136 states, 4328 states have (on average 1.3493530499075785) internal successors, (5840), 4448 states have internal predecessors, (5840), 1381 states have call successors, (1381), 427 states have call predecessors, (1381), 426 states have return successors, (1379), 1350 states have call predecessors, (1379), 1379 states have call successors, (1379) [2021-12-16 04:22:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 8600 transitions. [2021-12-16 04:22:10,809 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 8600 transitions. Word has length 147 [2021-12-16 04:22:10,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:22:10,809 INFO L470 AbstractCegarLoop]: Abstraction has 6136 states and 8600 transitions. [2021-12-16 04:22:10,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-16 04:22:10,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 8600 transitions. [2021-12-16 04:22:10,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-16 04:22:10,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:22:10,813 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:22:10,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 04:22:10,814 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:22:10,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:22:10,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1307854147, now seen corresponding path program 1 times [2021-12-16 04:22:10,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:22:10,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286892557] [2021-12-16 04:22:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:22:10,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:22:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:22:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:22:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 04:22:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 04:22:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 04:22:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 04:22:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:10,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 04:22:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:11,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 04:22:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-16 04:22:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-16 04:22:11,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:22:11,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286892557] [2021-12-16 04:22:11,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286892557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:22:11,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:22:11,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 04:22:11,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214311095] [2021-12-16 04:22:11,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:22:11,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 04:22:11,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:22:11,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 04:22:11,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 04:22:11,023 INFO L87 Difference]: Start difference. First operand 6136 states and 8600 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-16 04:22:15,301 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 [] [2021-12-16 04:22:16,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:22:16,770 INFO L93 Difference]: Finished difference Result 13443 states and 19688 transitions. [2021-12-16 04:22:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:22:16,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 148 [2021-12-16 04:22:16,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:22:16,802 INFO L225 Difference]: With dead ends: 13443 [2021-12-16 04:22:16,802 INFO L226 Difference]: Without dead ends: 7327 [2021-12-16 04:22:16,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-16 04:22:16,832 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 4160 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 3143 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4234 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 5195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3143 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-16 04:22:16,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4234 Valid, 2051 Invalid, 5195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3143 Valid, 2051 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-12-16 04:22:16,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7327 states. [2021-12-16 04:22:17,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7327 to 6100. [2021-12-16 04:22:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6100 states, 4292 states have (on average 1.2807548928238583) internal successors, (5497), 4412 states have internal predecessors, (5497), 1381 states have call successors, (1381), 427 states have call predecessors, (1381), 426 states have return successors, (1379), 1350 states have call predecessors, (1379), 1379 states have call successors, (1379) [2021-12-16 04:22:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6100 states to 6100 states and 8257 transitions. [2021-12-16 04:22:17,081 INFO L78 Accepts]: Start accepts. Automaton has 6100 states and 8257 transitions. Word has length 148 [2021-12-16 04:22:17,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:22:17,082 INFO L470 AbstractCegarLoop]: Abstraction has 6100 states and 8257 transitions. [2021-12-16 04:22:17,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-16 04:22:17,082 INFO L276 IsEmpty]: Start isEmpty. Operand 6100 states and 8257 transitions. [2021-12-16 04:22:17,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-16 04:22:17,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:22:17,086 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:22:17,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 04:22:17,086 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:22:17,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:22:17,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1730555973, now seen corresponding path program 1 times [2021-12-16 04:22:17,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:22:17,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64190835] [2021-12-16 04:22:17,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:22:17,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:22:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:22:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:22:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 04:22:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 04:22:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 04:22:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 04:22:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 04:22:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 04:22:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-16 04:22:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-16 04:22:17,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:22:17,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64190835] [2021-12-16 04:22:17,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64190835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:22:17,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:22:17,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 04:22:17,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239683116] [2021-12-16 04:22:17,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:22:17,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 04:22:17,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:22:17,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 04:22:17,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 04:22:17,255 INFO L87 Difference]: Start difference. First operand 6100 states and 8257 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (14), 7 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 04:22:21,927 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 []