./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.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 371146a21f508450d2917c35c74c2cfe0e1080bf9001699397599cb4eb3a0e88 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 20:04:27,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 20:04:27,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 20:04:27,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 20:04:27,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 20:04:27,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 20:04:27,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 20:04:27,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 20:04:27,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 20:04:27,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 20:04:27,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 20:04:27,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 20:04:27,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 20:04:27,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 20:04:27,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 20:04:27,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 20:04:27,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 20:04:27,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 20:04:27,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 20:04:27,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 20:04:27,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 20:04:27,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 20:04:27,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 20:04:27,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 20:04:27,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 20:04:27,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 20:04:27,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 20:04:27,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 20:04:27,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 20:04:27,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 20:04:27,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 20:04:27,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 20:04:27,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 20:04:27,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 20:04:27,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 20:04:27,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 20:04:27,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 20:04:27,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 20:04:27,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 20:04:27,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 20:04:27,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 20:04:27,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 20:04:27,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 20:04:27,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 20:04:27,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 20:04:27,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 20:04:27,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 20:04:27,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 20:04:27,275 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 20:04:27,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 20:04:27,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 20:04:27,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 20:04:27,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 20:04:27,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 20:04:27,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 20:04:27,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 20:04:27,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 20:04:27,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 20:04:27,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 20:04:27,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 20:04:27,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 20:04:27,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:04:27,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 20:04:27,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 20:04:27,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 20:04:27,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 20:04:27,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 20:04:27,278 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 20:04:27,278 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 20:04:27,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 20:04:27,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 20:04:27,279 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 371146a21f508450d2917c35c74c2cfe0e1080bf9001699397599cb4eb3a0e88 [2021-11-05 20:04:27,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 20:04:27,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 20:04:27,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 20:04:27,563 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 20:04:27,563 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 20:04:27,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i [2021-11-05 20:04:27,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a1945802/650067ae3df6431a899a37ac5981facf/FLAG30564c4db [2021-11-05 20:04:28,394 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 20:04:28,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i [2021-11-05 20:04:28,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a1945802/650067ae3df6431a899a37ac5981facf/FLAG30564c4db [2021-11-05 20:04:28,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a1945802/650067ae3df6431a899a37ac5981facf [2021-11-05 20:04:28,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 20:04:28,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 20:04:28,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 20:04:28,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 20:04:28,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 20:04:28,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:04:28" (1/1) ... [2021-11-05 20:04:28,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447f3268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:28, skipping insertion in model container [2021-11-05 20:04:28,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:04:28" (1/1) ... [2021-11-05 20:04:28,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 20:04:28,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 20:04:30,904 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i[402539,402552] [2021-11-05 20:04:30,907 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i[402684,402697] [2021-11-05 20:04:30,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:04:30,971 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 20:04:31,277 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i[402539,402552] [2021-11-05 20:04:31,277 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i[402684,402697] [2021-11-05 20:04:31,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:04:31,477 INFO L208 MainTranslator]: Completed translation [2021-11-05 20:04:31,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:31 WrapperNode [2021-11-05 20:04:31,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 20:04:31,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 20:04:31,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 20:04:31,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 20:04:31,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:31" (1/1) ... [2021-11-05 20:04:31,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:31" (1/1) ... [2021-11-05 20:04:35,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 20:04:35,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 20:04:35,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 20:04:35,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 20:04:35,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:31" (1/1) ... [2021-11-05 20:04:35,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:31" (1/1) ... [2021-11-05 20:04:36,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:31" (1/1) ... [2021-11-05 20:04:36,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:31" (1/1) ... [2021-11-05 20:04:37,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:31" (1/1) ... [2021-11-05 20:04:38,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:31" (1/1) ... [2021-11-05 20:04:38,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:31" (1/1) ... [2021-11-05 20:04:39,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 20:04:39,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 20:04:39,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 20:04:39,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 20:04:39,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:31" (1/1) ... [2021-11-05 20:04:39,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:04:39,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 20:04:39,142 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) [2021-11-05 20:04:39,162 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 [2021-11-05 20:04:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-05 20:04:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 20:04:39,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 20:04:39,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 20:04:39,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 20:04:39,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 20:04:39,173 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-05 20:04:39,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 20:04:39,173 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 20:04:39,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 20:04:39,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 20:04:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 20:04:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 20:04:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 20:04:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 20:04:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 20:04:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 20:04:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 20:04:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-05 20:09:11,398 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-05 20:09:11,399 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-05 20:09:11,399 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-05 20:09:11,399 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-05 20:09:11,399 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-05 20:09:11,400 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-05 20:09:11,400 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 20:09:11,400 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-05 20:09:11,401 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 20:09:11,403 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-05 20:09:11,403 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-05 20:09:11,404 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-05 20:09:11,404 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-05 20:09:11,404 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-05 20:09:11,405 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 20:09:11,413 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-05 20:09:11,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 20:09:11,479 INFO L299 CfgBuilder]: Removed 36865 assume(true) statements. [2021-11-05 20:09:11,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:09:11 BoogieIcfgContainer [2021-11-05 20:09:11,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 20:09:11,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 20:09:11,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 20:09:11,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 20:09:11,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 08:04:28" (1/3) ... [2021-11-05 20:09:11,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558406e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:09:11, skipping insertion in model container [2021-11-05 20:09:11,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:31" (2/3) ... [2021-11-05 20:09:11,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558406e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:09:11, skipping insertion in model container [2021-11-05 20:09:11,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:09:11" (3/3) ... [2021-11-05 20:09:11,507 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_fs-autofs4-autofs4.cil.i [2021-11-05 20:09:11,510 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 20:09:11,510 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2021-11-05 20:09:11,598 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 20:09:11,604 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 [2021-11-05 20:09:11,604 INFO L340 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2021-11-05 20:09:11,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 34002 states, 33958 states have (on average 1.3837976323693975) internal successors, (46991), 34001 states have internal predecessors, (46991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:11,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-05 20:09:11,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:09:11,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:09:11,915 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-05 20:09:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:09:11,919 INFO L85 PathProgramCache]: Analyzing trace with hash -450101907, now seen corresponding path program 1 times [2021-11-05 20:09:11,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:09:11,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090535882] [2021-11-05 20:09:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:09:11,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:09:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:09:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:09:12,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:09:12,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090535882] [2021-11-05 20:09:12,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090535882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:09:12,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:09:12,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 20:09:12,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120587081] [2021-11-05 20:09:12,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:09:12,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 20:09:12,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:09:12,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 20:09:12,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 20:09:12,697 INFO L87 Difference]: Start difference. First operand has 34002 states, 33958 states have (on average 1.3837976323693975) internal successors, (46991), 34001 states have internal predecessors, (46991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:09:13,570 INFO L93 Difference]: Finished difference Result 66059 states and 91429 transitions. [2021-11-05 20:09:13,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 20:09:13,572 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-11-05 20:09:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:09:13,700 INFO L225 Difference]: With dead ends: 66059 [2021-11-05 20:09:13,700 INFO L226 Difference]: Without dead ends: 30627 [2021-11-05 20:09:13,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 20:09:13,771 INFO L933 BasicCegarLoop]: 40899 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40899 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 20:09:13,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40899 Invalid, 0 Unknown, 0 Unchecked, 59.95ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 20:09:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30627 states. [2021-11-05 20:09:14,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30627 to 30627. [2021-11-05 20:09:14,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30627 states, 30583 states have (on average 1.2166890102344439) internal successors, (37210), 30626 states have internal predecessors, (37210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:14,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30627 states to 30627 states and 37210 transitions. [2021-11-05 20:09:14,755 INFO L78 Accepts]: Start accepts. Automaton has 30627 states and 37210 transitions. Word has length 184 [2021-11-05 20:09:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:09:14,758 INFO L470 AbstractCegarLoop]: Abstraction has 30627 states and 37210 transitions. [2021-11-05 20:09:14,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:14,759 INFO L276 IsEmpty]: Start isEmpty. Operand 30627 states and 37210 transitions. [2021-11-05 20:09:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-05 20:09:14,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:09:14,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:09:14,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 20:09:14,770 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-05 20:09:14,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:09:14,771 INFO L85 PathProgramCache]: Analyzing trace with hash -191936469, now seen corresponding path program 1 times [2021-11-05 20:09:14,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:09:14,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682640772] [2021-11-05 20:09:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:09:14,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:09:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:09:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:09:15,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:09:15,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682640772] [2021-11-05 20:09:15,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682640772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:09:15,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:09:15,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:09:15,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148453707] [2021-11-05 20:09:15,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:09:15,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:09:15,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:09:15,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:09:15,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:09:15,141 INFO L87 Difference]: Start difference. First operand 30627 states and 37210 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:17,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:09:18,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:09:18,640 INFO L93 Difference]: Finished difference Result 90531 states and 110057 transitions. [2021-11-05 20:09:18,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:09:18,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-11-05 20:09:18,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:09:18,763 INFO L225 Difference]: With dead ends: 90531 [2021-11-05 20:09:18,767 INFO L226 Difference]: Without dead ends: 60260 [2021-11-05 20:09:18,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:09:18,824 INFO L933 BasicCegarLoop]: 37203 mSDtfsCounter, 36018 mSDsluCounter, 37172 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2294.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36018 SdHoareTripleChecker+Valid, 74375 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 210.41ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2426.40ms IncrementalHoareTripleChecker+Time [2021-11-05 20:09:18,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36018 Valid, 74375 Invalid, 48 Unknown, 0 Unchecked, 210.41ms Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 2426.40ms Time] [2021-11-05 20:09:18,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60260 states. [2021-11-05 20:09:19,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60260 to 60170. [2021-11-05 20:09:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60170 states, 60126 states have (on average 1.2173435784851812) internal successors, (73194), 60169 states have internal predecessors, (73194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:20,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60170 states to 60170 states and 73194 transitions. [2021-11-05 20:09:20,085 INFO L78 Accepts]: Start accepts. Automaton has 60170 states and 73194 transitions. Word has length 184 [2021-11-05 20:09:20,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:09:20,087 INFO L470 AbstractCegarLoop]: Abstraction has 60170 states and 73194 transitions. [2021-11-05 20:09:20,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:20,087 INFO L276 IsEmpty]: Start isEmpty. Operand 60170 states and 73194 transitions. [2021-11-05 20:09:20,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-05 20:09:20,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:09:20,106 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:09:20,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 20:09:20,107 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-05 20:09:20,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:09:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash 917665190, now seen corresponding path program 1 times [2021-11-05 20:09:20,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:09:20,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648233807] [2021-11-05 20:09:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:09:20,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:09:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:09:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:09:20,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:09:20,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648233807] [2021-11-05 20:09:20,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648233807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:09:20,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:09:20,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:09:20,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176241606] [2021-11-05 20:09:20,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:09:20,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:09:20,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:09:20,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:09:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:09:20,414 INFO L87 Difference]: Start difference. First operand 60170 states and 73194 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:22,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:09:24,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:09:24,316 INFO L93 Difference]: Finished difference Result 149537 states and 181931 transitions. [2021-11-05 20:09:24,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:09:24,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-11-05 20:09:24,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:09:24,540 INFO L225 Difference]: With dead ends: 149537 [2021-11-05 20:09:24,540 INFO L226 Difference]: Without dead ends: 89723 [2021-11-05 20:09:24,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:09:24,638 INFO L933 BasicCegarLoop]: 37199 mSDtfsCounter, 35984 mSDsluCounter, 37120 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2295.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35984 SdHoareTripleChecker+Valid, 74319 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.83ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2374.31ms IncrementalHoareTripleChecker+Time [2021-11-05 20:09:24,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35984 Valid, 74319 Invalid, 48 Unknown, 0 Unchecked, 62.83ms Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 2374.31ms Time] [2021-11-05 20:09:24,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89723 states. [2021-11-05 20:09:26,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89723 to 89639. [2021-11-05 20:09:26,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89639 states, 89595 states have (on average 1.2175567833026397) internal successors, (109087), 89638 states have internal predecessors, (109087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:26,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89639 states to 89639 states and 109087 transitions. [2021-11-05 20:09:26,705 INFO L78 Accepts]: Start accepts. Automaton has 89639 states and 109087 transitions. Word has length 199 [2021-11-05 20:09:26,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:09:26,706 INFO L470 AbstractCegarLoop]: Abstraction has 89639 states and 109087 transitions. [2021-11-05 20:09:26,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:26,706 INFO L276 IsEmpty]: Start isEmpty. Operand 89639 states and 109087 transitions. [2021-11-05 20:09:26,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-05 20:09:26,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:09:26,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:09:26,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 20:09:26,729 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-05 20:09:26,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:09:26,732 INFO L85 PathProgramCache]: Analyzing trace with hash -372439753, now seen corresponding path program 1 times [2021-11-05 20:09:26,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:09:26,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222594437] [2021-11-05 20:09:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:09:26,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:09:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:09:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:09:27,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:09:27,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222594437] [2021-11-05 20:09:27,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222594437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:09:27,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:09:27,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:09:27,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856373564] [2021-11-05 20:09:27,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:09:27,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:09:27,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:09:27,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:09:27,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:09:27,052 INFO L87 Difference]: Start difference. First operand 89639 states and 109087 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:29,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:09:31,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:09:31,555 INFO L93 Difference]: Finished difference Result 203312 states and 247734 transitions. [2021-11-05 20:09:31,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:09:31,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2021-11-05 20:09:31,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:09:31,803 INFO L225 Difference]: With dead ends: 203312 [2021-11-05 20:09:31,804 INFO L226 Difference]: Without dead ends: 114029 [2021-11-05 20:09:31,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:09:31,946 INFO L933 BasicCegarLoop]: 37197 mSDtfsCounter, 22503 mSDsluCounter, 37146 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2467.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22503 SdHoareTripleChecker+Valid, 74343 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.17ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2557.30ms IncrementalHoareTripleChecker+Time [2021-11-05 20:09:31,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22503 Valid, 74343 Invalid, 86 Unknown, 0 Unchecked, 54.17ms Time], IncrementalHoareTripleChecker [13 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 2557.30ms Time] [2021-11-05 20:09:32,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114029 states. [2021-11-05 20:09:34,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114029 to 113961. [2021-11-05 20:09:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113961 states, 113917 states have (on average 1.2200198390055919) internal successors, (138981), 113960 states have internal predecessors, (138981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:34,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113961 states to 113961 states and 138981 transitions. [2021-11-05 20:09:34,594 INFO L78 Accepts]: Start accepts. Automaton has 113961 states and 138981 transitions. Word has length 206 [2021-11-05 20:09:34,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:09:34,595 INFO L470 AbstractCegarLoop]: Abstraction has 113961 states and 138981 transitions. [2021-11-05 20:09:34,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:34,595 INFO L276 IsEmpty]: Start isEmpty. Operand 113961 states and 138981 transitions. [2021-11-05 20:09:34,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-05 20:09:34,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:09:34,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:09:34,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 20:09:34,624 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-05 20:09:34,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:09:34,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1156160093, now seen corresponding path program 1 times [2021-11-05 20:09:34,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:09:34,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768364817] [2021-11-05 20:09:34,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:09:34,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:09:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:09:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:09:35,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:09:35,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768364817] [2021-11-05 20:09:35,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768364817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:09:35,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:09:35,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:09:35,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444076809] [2021-11-05 20:09:35,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:09:35,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:09:35,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:09:35,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:09:35,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:09:35,002 INFO L87 Difference]: Start difference. First operand 113961 states and 138981 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:37,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:09:40,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:09:40,455 INFO L93 Difference]: Finished difference Result 293605 states and 358408 transitions. [2021-11-05 20:09:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:09:40,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2021-11-05 20:09:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:09:40,850 INFO L225 Difference]: With dead ends: 293605 [2021-11-05 20:09:40,850 INFO L226 Difference]: Without dead ends: 180000 [2021-11-05 20:09:41,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:09:41,072 INFO L933 BasicCegarLoop]: 37197 mSDtfsCounter, 29558 mSDsluCounter, 37146 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2474.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29558 SdHoareTripleChecker+Valid, 74343 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.87ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2582.93ms IncrementalHoareTripleChecker+Time [2021-11-05 20:09:41,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29558 Valid, 74343 Invalid, 86 Unknown, 0 Unchecked, 57.87ms Time], IncrementalHoareTripleChecker [13 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 2582.93ms Time] [2021-11-05 20:09:41,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180000 states. [2021-11-05 20:09:44,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180000 to 179908. [2021-11-05 20:09:44,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179908 states, 179864 states have (on average 1.2216063247787217) internal successors, (219723), 179907 states have internal predecessors, (219723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:44,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179908 states to 179908 states and 219723 transitions. [2021-11-05 20:09:44,956 INFO L78 Accepts]: Start accepts. Automaton has 179908 states and 219723 transitions. Word has length 207 [2021-11-05 20:09:44,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:09:44,956 INFO L470 AbstractCegarLoop]: Abstraction has 179908 states and 219723 transitions. [2021-11-05 20:09:44,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:44,957 INFO L276 IsEmpty]: Start isEmpty. Operand 179908 states and 219723 transitions. [2021-11-05 20:09:44,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-05 20:09:44,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:09:44,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:09:44,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 20:09:44,976 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-05 20:09:44,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:09:44,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2001985186, now seen corresponding path program 1 times [2021-11-05 20:09:44,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:09:44,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671019608] [2021-11-05 20:09:44,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:09:44,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:09:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:09:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:09:45,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:09:45,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671019608] [2021-11-05 20:09:45,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671019608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:09:45,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:09:45,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:09:45,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498195882] [2021-11-05 20:09:45,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:09:45,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:09:45,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:09:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:09:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:09:45,276 INFO L87 Difference]: Start difference. First operand 179908 states and 219723 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:09:47,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []