./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-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-43_2a-drivers--usb--storage--uas.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 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:26:13,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:26:13,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:26:13,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:26:13,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:26:13,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:26:13,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:26:13,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:26:13,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:26:13,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:26:13,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:26:13,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:26:13,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:26:13,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:26:13,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:26:13,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:26:13,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:26:13,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:26:13,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:26:13,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:26:13,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:26:13,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:26:13,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:26:13,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:26:13,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:26:13,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:26:13,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:26:13,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:26:13,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:26:13,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:26:13,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:26:13,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:26:13,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:26:13,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:26:13,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:26:13,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:26:13,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:26:13,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:26:13,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:26:13,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:26:13,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:26:13,367 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:26:13,383 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:26:13,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:26:13,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:26:13,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:26:13,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:26:13,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:26:13,385 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:26:13,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:26:13,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:26:13,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:26:13,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:26:13,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:26:13,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:26:13,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:26:13,386 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:26:13,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:26:13,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:26:13,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:26:13,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:26:13,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:26:13,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:26:13,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:26:13,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:26:13,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:26:13,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:26:13,388 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:26:13,388 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:26:13,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:26:13,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:26:13,389 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a [2021-11-07 16:26:13,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:26:13,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:26:13,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:26:13,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:26:13,623 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:26:13,624 INFO L432 ainManager$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-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-11-07 16:26:13,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c27871ab/c65ea288619744a0aa3e5df67a755474/FLAG507f72811 [2021-11-07 16:26:14,247 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:26:14,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-11-07 16:26:14,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c27871ab/c65ea288619744a0aa3e5df67a755474/FLAG507f72811 [2021-11-07 16:26:14,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c27871ab/c65ea288619744a0aa3e5df67a755474 [2021-11-07 16:26:14,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:26:14,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:26:14,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:26:14,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:26:14,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:26:14,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:26:14" (1/1) ... [2021-11-07 16:26:14,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd72b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:26:14, skipping insertion in model container [2021-11-07 16:26:14,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:26:14" (1/1) ... [2021-11-07 16:26:14,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:26:14,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:26:15,674 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2021-11-07 16:26:15,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:26:15,750 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:26:15,965 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2021-11-07 16:26:15,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:26:16,034 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:26:16,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:26:16 WrapperNode [2021-11-07 16:26:16,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:26:16,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:26:16,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:26:16,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:26:16,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:26:16" (1/1) ... [2021-11-07 16:26:16,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:26:16" (1/1) ... [2021-11-07 16:26:16,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:26:16,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:26:16,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:26:16,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:26:16,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:26:16" (1/1) ... [2021-11-07 16:26:16,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:26:16" (1/1) ... [2021-11-07 16:26:16,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:26:16" (1/1) ... [2021-11-07 16:26:16,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:26:16" (1/1) ... [2021-11-07 16:26:17,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:26:16" (1/1) ... [2021-11-07 16:26:17,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:26:16" (1/1) ... [2021-11-07 16:26:17,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:26:16" (1/1) ... [2021-11-07 16:26:17,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:26:17,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:26:17,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:26:17,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:26:17,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:26:16" (1/1) ... [2021-11-07 16:26:17,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:26:17,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:26:17,333 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) [2021-11-07 16:26:17,376 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 [2021-11-07 16:26:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2021-11-07 16:26:17,416 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2021-11-07 16:26:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:26:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:26:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:26:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:26:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:26:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:26:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2021-11-07 16:26:17,432 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2021-11-07 16:26:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:26:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2021-11-07 16:26:17,432 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2021-11-07 16:26:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:26:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:26:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2021-11-07 16:26:17,433 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2021-11-07 16:26:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:26:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2021-11-07 16:26:17,433 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2021-11-07 16:26:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:26:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:26:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 16:26:17,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 16:26:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:26:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:26:17,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:26:30,347 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:26:30,347 INFO L299 CfgBuilder]: Removed 3060 assume(true) statements. [2021-11-07 16:26:30,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:26:30 BoogieIcfgContainer [2021-11-07 16:26:30,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:26:30,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:26:30,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:26:30,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:26:30,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:26:14" (1/3) ... [2021-11-07 16:26:30,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21230148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:26:30, skipping insertion in model container [2021-11-07 16:26:30,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:26:16" (2/3) ... [2021-11-07 16:26:30,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21230148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:26:30, skipping insertion in model container [2021-11-07 16:26:30,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:26:30" (3/3) ... [2021-11-07 16:26:30,359 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-11-07 16:26:30,362 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:26:30,363 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 120 error locations. [2021-11-07 16:26:30,419 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:26:30,425 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 [2021-11-07 16:26:30,426 INFO L340 AbstractCegarLoop]: Starting to check reachability of 120 error locations. [2021-11-07 16:26:30,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 4528 states, 4387 states have (on average 1.4424435833143379) internal successors, (6328), 4510 states have internal predecessors, (6328), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-07 16:26:30,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 16:26:30,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:30,519 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] [2021-11-07 16:26:30,520 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:26:30,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1622129590, now seen corresponding path program 1 times [2021-11-07 16:26:30,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:26:30,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377592581] [2021-11-07 16:26:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:30,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:26:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:26:31,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:26:31,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377592581] [2021-11-07 16:26:31,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377592581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:31,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:31,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:26:31,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820327989] [2021-11-07 16:26:31,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:31,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 16:26:31,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:26:31,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 16:26:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:26:31,051 INFO L87 Difference]: Start difference. First operand has 4528 states, 4387 states have (on average 1.4424435833143379) internal successors, (6328), 4510 states have internal predecessors, (6328), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) [2021-11-07 16:26:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:31,250 INFO L93 Difference]: Finished difference Result 9052 states and 12721 transitions. [2021-11-07 16:26:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 16:26:31,252 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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 40 [2021-11-07 16:26:31,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:31,284 INFO L225 Difference]: With dead ends: 9052 [2021-11-07 16:26:31,285 INFO L226 Difference]: Without dead ends: 4517 [2021-11-07 16:26:31,309 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 [2021-11-07 16:26:31,321 INFO L933 BasicCegarLoop]: 6148 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, 6148 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:31,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6148 Invalid, 0 Unknown, 0 Unchecked, 15.54ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 16:26:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2021-11-07 16:26:31,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 4517. [2021-11-07 16:26:31,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 4377 states have (on average 1.394334018734293) internal successors, (6103), 4499 states have internal predecessors, (6103), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-07 16:26:31,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 6131 transitions. [2021-11-07 16:26:31,491 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 6131 transitions. Word has length 40 [2021-11-07 16:26:31,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:31,491 INFO L470 AbstractCegarLoop]: Abstraction has 4517 states and 6131 transitions. [2021-11-07 16:26:31,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) [2021-11-07 16:26:31,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 6131 transitions. [2021-11-07 16:26:31,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 16:26:31,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:31,497 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] [2021-11-07 16:26:31,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:26:31,498 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:26:31,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:31,499 INFO L85 PathProgramCache]: Analyzing trace with hash 423605326, now seen corresponding path program 1 times [2021-11-07 16:26:31,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:26:31,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017545702] [2021-11-07 16:26:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:31,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:26:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:26:31,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:26:31,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017545702] [2021-11-07 16:26:31,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017545702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:31,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:31,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:26:31,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84157644] [2021-11-07 16:26:31,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:31,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:26:31,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:26:31,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:26:31,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:31,818 INFO L87 Difference]: Start difference. First operand 4517 states and 6131 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-07 16:26:32,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:32,133 INFO L93 Difference]: Finished difference Result 12843 states and 17473 transitions. [2021-11-07 16:26:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:26:32,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-11-07 16:26:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:32,164 INFO L225 Difference]: With dead ends: 12843 [2021-11-07 16:26:32,165 INFO L226 Difference]: Without dead ends: 8345 [2021-11-07 16:26:32,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:32,179 INFO L933 BasicCegarLoop]: 6132 mSDtfsCounter, 5193 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5193 SdHoareTripleChecker+Valid, 12225 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.31ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.97ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:32,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5193 Valid, 12225 Invalid, 58 Unknown, 0 Unchecked, 23.31ms Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 119.97ms Time] [2021-11-07 16:26:32,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8345 states. [2021-11-07 16:26:32,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8345 to 8145. [2021-11-07 16:26:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8145 states, 7985 states have (on average 1.398246712586099) internal successors, (11165), 8110 states have internal predecessors, (11165), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (42), 24 states have call predecessors, (42), 28 states have call successors, (42) [2021-11-07 16:26:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8145 states to 8145 states and 11235 transitions. [2021-11-07 16:26:32,355 INFO L78 Accepts]: Start accepts. Automaton has 8145 states and 11235 transitions. Word has length 40 [2021-11-07 16:26:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:32,355 INFO L470 AbstractCegarLoop]: Abstraction has 8145 states and 11235 transitions. [2021-11-07 16:26:32,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-07 16:26:32,359 INFO L276 IsEmpty]: Start isEmpty. Operand 8145 states and 11235 transitions. [2021-11-07 16:26:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 16:26:32,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:32,363 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] [2021-11-07 16:26:32,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:26:32,364 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:26:32,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:32,364 INFO L85 PathProgramCache]: Analyzing trace with hash 916297545, now seen corresponding path program 1 times [2021-11-07 16:26:32,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:26:32,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836315366] [2021-11-07 16:26:32,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:32,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:26:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:26:32,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:26:32,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836315366] [2021-11-07 16:26:32,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836315366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:32,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:32,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:26:32,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134436053] [2021-11-07 16:26:32,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:32,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:26:32,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:26:32,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:26:32,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:32,552 INFO L87 Difference]: Start difference. First operand 8145 states and 11235 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-11-07 16:26:32,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:32,994 INFO L93 Difference]: Finished difference Result 19603 states and 27017 transitions. [2021-11-07 16:26:32,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:26:32,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-11-07 16:26:32,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:33,034 INFO L225 Difference]: With dead ends: 19603 [2021-11-07 16:26:33,034 INFO L226 Difference]: Without dead ends: 11477 [2021-11-07 16:26:33,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:33,056 INFO L933 BasicCegarLoop]: 6132 mSDtfsCounter, 5252 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5252 SdHoareTripleChecker+Valid, 12225 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.85ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.66ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:33,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5252 Valid, 12225 Invalid, 58 Unknown, 0 Unchecked, 14.85ms Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 119.66ms Time] [2021-11-07 16:26:33,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11477 states. [2021-11-07 16:26:33,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11477 to 11277. [2021-11-07 16:26:33,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11277 states, 11097 states have (on average 1.3983959628728486) internal successors, (15518), 11225 states have internal predecessors, (15518), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (84), 36 states have call predecessors, (84), 42 states have call successors, (84) [2021-11-07 16:26:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11277 states to 11277 states and 15644 transitions. [2021-11-07 16:26:33,289 INFO L78 Accepts]: Start accepts. Automaton has 11277 states and 15644 transitions. Word has length 41 [2021-11-07 16:26:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:33,290 INFO L470 AbstractCegarLoop]: Abstraction has 11277 states and 15644 transitions. [2021-11-07 16:26:33,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-11-07 16:26:33,291 INFO L276 IsEmpty]: Start isEmpty. Operand 11277 states and 15644 transitions. [2021-11-07 16:26:33,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 16:26:33,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:33,293 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] [2021-11-07 16:26:33,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:26:33,294 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:26:33,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:33,294 INFO L85 PathProgramCache]: Analyzing trace with hash -990111858, now seen corresponding path program 1 times [2021-11-07 16:26:33,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:26:33,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764651869] [2021-11-07 16:26:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:33,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:26:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:26:33,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:26:33,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764651869] [2021-11-07 16:26:33,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764651869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:33,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:33,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:26:33,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91562378] [2021-11-07 16:26:33,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:33,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:26:33,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:26:33,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:26:33,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:33,511 INFO L87 Difference]: Start difference. First operand 11277 states and 15644 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 16:26:33,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:33,858 INFO L93 Difference]: Finished difference Result 25321 states and 35133 transitions. [2021-11-07 16:26:33,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:26:33,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-07 16:26:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:33,911 INFO L225 Difference]: With dead ends: 25321 [2021-11-07 16:26:33,911 INFO L226 Difference]: Without dead ends: 14063 [2021-11-07 16:26:33,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:33,942 INFO L933 BasicCegarLoop]: 6132 mSDtfsCounter, 5271 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5271 SdHoareTripleChecker+Valid, 12225 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.74ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.92ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:33,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5271 Valid, 12225 Invalid, 58 Unknown, 0 Unchecked, 19.74ms Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 93.92ms Time] [2021-11-07 16:26:33,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14063 states. [2021-11-07 16:26:34,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14063 to 13863. [2021-11-07 16:26:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13863 states, 13663 states have (on average 1.3986679352997144) internal successors, (19110), 13794 states have internal predecessors, (19110), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (140), 48 states have call predecessors, (140), 56 states have call successors, (140) [2021-11-07 16:26:34,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13863 states to 13863 states and 19306 transitions. [2021-11-07 16:26:34,243 INFO L78 Accepts]: Start accepts. Automaton has 13863 states and 19306 transitions. Word has length 42 [2021-11-07 16:26:34,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:34,243 INFO L470 AbstractCegarLoop]: Abstraction has 13863 states and 19306 transitions. [2021-11-07 16:26:34,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 16:26:34,243 INFO L276 IsEmpty]: Start isEmpty. Operand 13863 states and 19306 transitions. [2021-11-07 16:26:34,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 16:26:34,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:34,244 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] [2021-11-07 16:26:34,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:26:34,245 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:26:34,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:34,245 INFO L85 PathProgramCache]: Analyzing trace with hash 40739785, now seen corresponding path program 1 times [2021-11-07 16:26:34,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:26:34,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424403208] [2021-11-07 16:26:34,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:34,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:26:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:26:34,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:26:34,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424403208] [2021-11-07 16:26:34,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424403208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:34,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:34,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:26:34,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106644725] [2021-11-07 16:26:34,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:34,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:26:34,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:26:34,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:26:34,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:34,409 INFO L87 Difference]: Start difference. First operand 13863 states and 19306 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-07 16:26:34,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:34,883 INFO L93 Difference]: Finished difference Result 29945 states and 41765 transitions. [2021-11-07 16:26:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:26:34,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-07 16:26:34,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:34,929 INFO L225 Difference]: With dead ends: 29945 [2021-11-07 16:26:34,929 INFO L226 Difference]: Without dead ends: 16101 [2021-11-07 16:26:34,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:34,969 INFO L933 BasicCegarLoop]: 6132 mSDtfsCounter, 5290 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5290 SdHoareTripleChecker+Valid, 12225 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.71ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.69ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:34,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5290 Valid, 12225 Invalid, 58 Unknown, 0 Unchecked, 17.71ms Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 86.69ms Time] [2021-11-07 16:26:34,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16101 states. [2021-11-07 16:26:35,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16101 to 15901. [2021-11-07 16:26:35,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15901 states, 15681 states have (on average 1.3989541483323769) internal successors, (21937), 15815 states have internal predecessors, (21937), 70 states have call successors, (70), 30 states have call predecessors, (70), 30 states have return successors, (210), 60 states have call predecessors, (210), 70 states have call successors, (210) [2021-11-07 16:26:35,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15901 states to 15901 states and 22217 transitions. [2021-11-07 16:26:35,346 INFO L78 Accepts]: Start accepts. Automaton has 15901 states and 22217 transitions. Word has length 43 [2021-11-07 16:26:35,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:35,346 INFO L470 AbstractCegarLoop]: Abstraction has 15901 states and 22217 transitions. [2021-11-07 16:26:35,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-07 16:26:35,347 INFO L276 IsEmpty]: Start isEmpty. Operand 15901 states and 22217 transitions. [2021-11-07 16:26:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 16:26:35,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:35,350 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] [2021-11-07 16:26:35,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:26:35,350 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:26:35,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:35,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1145225261, now seen corresponding path program 1 times [2021-11-07 16:26:35,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:26:35,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380953873] [2021-11-07 16:26:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:35,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:26:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:26:35,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:26:35,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380953873] [2021-11-07 16:26:35,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380953873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:35,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:35,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:26:35,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492868131] [2021-11-07 16:26:35,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:35,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:26:35,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:26:35,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:26:35,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:35,493 INFO L87 Difference]: Start difference. First operand 15901 states and 22217 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-07 16:26:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:35,986 INFO L93 Difference]: Finished difference Result 45470 states and 63696 transitions. [2021-11-07 16:26:35,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:26:35,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2021-11-07 16:26:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:36,057 INFO L225 Difference]: With dead ends: 45470 [2021-11-07 16:26:36,057 INFO L226 Difference]: Without dead ends: 29588 [2021-11-07 16:26:36,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:36,101 INFO L933 BasicCegarLoop]: 11055 mSDtfsCounter, 5529 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5529 SdHoareTripleChecker+Valid, 17125 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.04ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.38ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:36,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5529 Valid, 17125 Invalid, 25 Unknown, 0 Unchecked, 18.04ms Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 62.38ms Time] [2021-11-07 16:26:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29588 states. [2021-11-07 16:26:36,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29588 to 23198. [2021-11-07 16:26:36,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23198 states, 22978 states have (on average 1.3991208982505006) internal successors, (32149), 23112 states have internal predecessors, (32149), 70 states have call successors, (70), 30 states have call predecessors, (70), 30 states have return successors, (210), 60 states have call predecessors, (210), 70 states have call successors, (210) [2021-11-07 16:26:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23198 states to 23198 states and 32429 transitions. [2021-11-07 16:26:36,686 INFO L78 Accepts]: Start accepts. Automaton has 23198 states and 32429 transitions. Word has length 55 [2021-11-07 16:26:36,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:36,687 INFO L470 AbstractCegarLoop]: Abstraction has 23198 states and 32429 transitions. [2021-11-07 16:26:36,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-07 16:26:36,687 INFO L276 IsEmpty]: Start isEmpty. Operand 23198 states and 32429 transitions. [2021-11-07 16:26:36,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 16:26:36,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:36,690 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:26:36,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 16:26:36,690 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:26:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1788726958, now seen corresponding path program 1 times [2021-11-07 16:26:36,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:26:36,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502333526] [2021-11-07 16:26:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:36,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:26:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:26:36,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:26:36,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502333526] [2021-11-07 16:26:36,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502333526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:36,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:36,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:26:36,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924002252] [2021-11-07 16:26:36,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:36,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:26:36,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:26:36,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:26:36,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:36,823 INFO L87 Difference]: Start difference. First operand 23198 states and 32429 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-07 16:26:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:37,321 INFO L93 Difference]: Finished difference Result 60654 states and 84925 transitions. [2021-11-07 16:26:37,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:26:37,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 95 [2021-11-07 16:26:37,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:37,406 INFO L225 Difference]: With dead ends: 60654 [2021-11-07 16:26:37,406 INFO L226 Difference]: Without dead ends: 37475 [2021-11-07 16:26:37,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:37,454 INFO L933 BasicCegarLoop]: 10119 mSDtfsCounter, 4050 mSDsluCounter, 6081 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4050 SdHoareTripleChecker+Valid, 16200 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.73ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.75ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:37,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4050 Valid, 16200 Invalid, 32 Unknown, 0 Unchecked, 13.73ms Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 58.75ms Time] [2021-11-07 16:26:37,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37475 states. [2021-11-07 16:26:38,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37475 to 37305. [2021-11-07 16:26:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37305 states, 36995 states have (on average 1.4027841600216246) internal successors, (51896), 37144 states have internal predecessors, (51896), 130 states have call successors, (130), 60 states have call predecessors, (130), 60 states have return successors, (390), 110 states have call predecessors, (390), 130 states have call successors, (390) [2021-11-07 16:26:38,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37305 states to 37305 states and 52416 transitions. [2021-11-07 16:26:38,461 INFO L78 Accepts]: Start accepts. Automaton has 37305 states and 52416 transitions. Word has length 95 [2021-11-07 16:26:38,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:38,461 INFO L470 AbstractCegarLoop]: Abstraction has 37305 states and 52416 transitions. [2021-11-07 16:26:38,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-07 16:26:38,461 INFO L276 IsEmpty]: Start isEmpty. Operand 37305 states and 52416 transitions. [2021-11-07 16:26:38,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 16:26:38,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:38,467 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:26:38,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 16:26:38,468 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:26:38,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:38,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2141471772, now seen corresponding path program 1 times [2021-11-07 16:26:38,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:26:38,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108278647] [2021-11-07 16:26:38,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:38,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:26:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:26:38,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:26:38,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108278647] [2021-11-07 16:26:38,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108278647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:38,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:38,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:26:38,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20360248] [2021-11-07 16:26:38,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:38,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:26:38,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:26:38,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:26:38,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:26:38,658 INFO L87 Difference]: Start difference. First operand 37305 states and 52416 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2021-11-07 16:26:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:40,243 INFO L93 Difference]: Finished difference Result 121013 states and 169844 transitions. [2021-11-07 16:26:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:26:40,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 112 [2021-11-07 16:26:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:40,454 INFO L225 Difference]: With dead ends: 121013 [2021-11-07 16:26:40,454 INFO L226 Difference]: Without dead ends: 83727 [2021-11-07 16:26:40,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.49ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:26:40,520 INFO L933 BasicCegarLoop]: 10227 mSDtfsCounter, 12228 mSDsluCounter, 16341 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12233 SdHoareTripleChecker+Valid, 26568 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.60ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.31ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:40,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12233 Valid, 26568 Invalid, 25 Unknown, 0 Unchecked, 37.60ms Time], IncrementalHoareTripleChecker [15 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 49.31ms Time] [2021-11-07 16:26:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83727 states. [2021-11-07 16:26:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83727 to 37325. [2021-11-07 16:26:41,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37325 states, 37015 states have (on average 1.4025665270836147) internal successors, (51916), 37164 states have internal predecessors, (51916), 130 states have call successors, (130), 60 states have call predecessors, (130), 60 states have return successors, (390), 110 states have call predecessors, (390), 130 states have call successors, (390) [2021-11-07 16:26:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37325 states to 37325 states and 52436 transitions. [2021-11-07 16:26:41,969 INFO L78 Accepts]: Start accepts. Automaton has 37325 states and 52436 transitions. Word has length 112 [2021-11-07 16:26:41,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:41,969 INFO L470 AbstractCegarLoop]: Abstraction has 37325 states and 52436 transitions. [2021-11-07 16:26:41,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2021-11-07 16:26:41,970 INFO L276 IsEmpty]: Start isEmpty. Operand 37325 states and 52436 transitions. [2021-11-07 16:26:41,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-07 16:26:41,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:41,972 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] [2021-11-07 16:26:41,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 16:26:41,972 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:26:41,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:41,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1311744405, now seen corresponding path program 1 times [2021-11-07 16:26:41,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:26:41,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653521952] [2021-11-07 16:26:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:41,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:26:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:26:42,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:26:42,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653521952] [2021-11-07 16:26:42,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653521952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:42,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:42,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:26:42,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781175837] [2021-11-07 16:26:42,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:42,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:26:42,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:26:42,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:26:42,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:42,133 INFO L87 Difference]: Start difference. First operand 37325 states and 52436 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:26:44,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:26:45,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:45,239 INFO L93 Difference]: Finished difference Result 89078 states and 125259 transitions. [2021-11-07 16:26:45,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:26:45,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-07 16:26:45,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:45,349 INFO L225 Difference]: With dead ends: 89078 [2021-11-07 16:26:45,350 INFO L226 Difference]: Without dead ends: 51772 [2021-11-07 16:26:45,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:45,398 INFO L933 BasicCegarLoop]: 10150 mSDtfsCounter, 4320 mSDsluCounter, 5819 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2075.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4320 SdHoareTripleChecker+Valid, 15969 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 98.46ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2166.63ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:45,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4320 Valid, 15969 Invalid, 50 Unknown, 0 Unchecked, 98.46ms Time], IncrementalHoareTripleChecker [14 Valid, 35 Invalid, 1 Unknown, 0 Unchecked, 2166.63ms Time] [2021-11-07 16:26:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51772 states. [2021-11-07 16:26:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51772 to 51602. [2021-11-07 16:26:46,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51602 states, 51202 states have (on average 1.4041053083863912) internal successors, (71893), 51366 states have internal predecessors, (71893), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-07 16:26:46,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51602 states to 51602 states and 72653 transitions. [2021-11-07 16:26:46,364 INFO L78 Accepts]: Start accepts. Automaton has 51602 states and 72653 transitions. Word has length 128 [2021-11-07 16:26:46,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:46,365 INFO L470 AbstractCegarLoop]: Abstraction has 51602 states and 72653 transitions. [2021-11-07 16:26:46,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:26:46,365 INFO L276 IsEmpty]: Start isEmpty. Operand 51602 states and 72653 transitions. [2021-11-07 16:26:46,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 16:26:46,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:46,370 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:26:46,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 16:26:46,371 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:26:46,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:46,371 INFO L85 PathProgramCache]: Analyzing trace with hash 122702320, now seen corresponding path program 1 times [2021-11-07 16:26:46,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:26:46,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204113893] [2021-11-07 16:26:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:46,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:26:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:26:46,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:26:46,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204113893] [2021-11-07 16:26:46,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204113893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:46,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:46,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:26:46,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668526142] [2021-11-07 16:26:46,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:46,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:26:46,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:26:46,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:26:46,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:26:46,501 INFO L87 Difference]: Start difference. First operand 51602 states and 72653 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2021-11-07 16:26:48,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:48,415 INFO L93 Difference]: Finished difference Result 167031 states and 234762 transitions. [2021-11-07 16:26:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:26:48,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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 131 [2021-11-07 16:26:48,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:48,700 INFO L225 Difference]: With dead ends: 167031 [2021-11-07 16:26:48,700 INFO L226 Difference]: Without dead ends: 115448 [2021-11-07 16:26:48,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.26ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:26:48,949 INFO L933 BasicCegarLoop]: 10077 mSDtfsCounter, 8564 mSDsluCounter, 12503 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8569 SdHoareTripleChecker+Valid, 22580 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.49ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.94ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:48,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8569 Valid, 22580 Invalid, 27 Unknown, 0 Unchecked, 22.49ms Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 48.94ms Time] [2021-11-07 16:26:49,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115448 states. [2021-11-07 16:26:50,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115448 to 51622. [2021-11-07 16:26:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51622 states, 51222 states have (on average 1.4039475225489049) internal successors, (71913), 51386 states have internal predecessors, (71913), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-07 16:26:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51622 states to 51622 states and 72673 transitions. [2021-11-07 16:26:50,577 INFO L78 Accepts]: Start accepts. Automaton has 51622 states and 72673 transitions. Word has length 131 [2021-11-07 16:26:50,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:50,577 INFO L470 AbstractCegarLoop]: Abstraction has 51622 states and 72673 transitions. [2021-11-07 16:26:50,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2021-11-07 16:26:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 51622 states and 72673 transitions. [2021-11-07 16:26:50,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 16:26:50,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:50,585 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:26:50,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 16:26:50,587 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:26:50,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:50,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1601958153, now seen corresponding path program 1 times [2021-11-07 16:26:50,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:26:50,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004012093] [2021-11-07 16:26:50,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:50,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:26:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:26:50,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:26:50,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004012093] [2021-11-07 16:26:50,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004012093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:50,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:50,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:26:50,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398531154] [2021-11-07 16:26:50,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:50,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:26:50,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:26:50,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:26:50,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:26:50,764 INFO L87 Difference]: Start difference. First operand 51622 states and 72673 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2021-11-07 16:26:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:53,643 INFO L93 Difference]: Finished difference Result 197699 states and 277785 transitions. [2021-11-07 16:26:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:26:53,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 138 [2021-11-07 16:26:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:54,008 INFO L225 Difference]: With dead ends: 197699 [2021-11-07 16:26:54,008 INFO L226 Difference]: Without dead ends: 146096 [2021-11-07 16:26:54,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:26:54,115 INFO L933 BasicCegarLoop]: 14080 mSDtfsCounter, 12494 mSDsluCounter, 20395 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12504 SdHoareTripleChecker+Valid, 34475 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.91ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.70ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:54,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12504 Valid, 34475 Invalid, 37 Unknown, 0 Unchecked, 31.91ms Time], IncrementalHoareTripleChecker [12 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 82.70ms Time] [2021-11-07 16:26:54,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146096 states. [2021-11-07 16:26:56,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146096 to 51642. [2021-11-07 16:26:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51642 states, 51242 states have (on average 1.4037898598805667) internal successors, (71933), 51406 states have internal predecessors, (71933), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-07 16:26:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51642 states to 51642 states and 72693 transitions. [2021-11-07 16:26:56,298 INFO L78 Accepts]: Start accepts. Automaton has 51642 states and 72693 transitions. Word has length 138 [2021-11-07 16:26:56,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:56,298 INFO L470 AbstractCegarLoop]: Abstraction has 51642 states and 72693 transitions. [2021-11-07 16:26:56,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2021-11-07 16:26:56,298 INFO L276 IsEmpty]: Start isEmpty. Operand 51642 states and 72693 transitions. [2021-11-07 16:26:56,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 16:26:56,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:56,303 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:26:56,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 16:26:56,303 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:26:56,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:56,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1805786297, now seen corresponding path program 1 times [2021-11-07 16:26:56,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:26:56,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271301950] [2021-11-07 16:26:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:56,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:26:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:26:56,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:26:56,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271301950] [2021-11-07 16:26:56,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271301950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:56,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:56,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:26:56,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348587900] [2021-11-07 16:26:56,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:56,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:26:56,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:26:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:26:56,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:56,476 INFO L87 Difference]: Start difference. First operand 51642 states and 72693 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-11-07 16:26:57,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:57,674 INFO L93 Difference]: Finished difference Result 103295 states and 145426 transitions. [2021-11-07 16:26:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:26:57,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 138 [2021-11-07 16:26:57,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:57,926 INFO L225 Difference]: With dead ends: 103295 [2021-11-07 16:26:57,926 INFO L226 Difference]: Without dead ends: 51672 [2021-11-07 16:26:57,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:57,980 INFO L933 BasicCegarLoop]: 6128 mSDtfsCounter, 0 mSDsluCounter, 6113 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12241 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.29ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.35ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:57,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12241 Invalid, 22 Unknown, 0 Unchecked, 8.29ms Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 37.35ms Time] [2021-11-07 16:26:58,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51672 states. [2021-11-07 16:26:59,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51672 to 51672. [2021-11-07 16:26:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51672 states, 51272 states have (on average 1.403553596504915) internal successors, (71963), 51436 states have internal predecessors, (71963), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-07 16:26:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51672 states to 51672 states and 72723 transitions. [2021-11-07 16:26:59,325 INFO L78 Accepts]: Start accepts. Automaton has 51672 states and 72723 transitions. Word has length 138 [2021-11-07 16:26:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:59,325 INFO L470 AbstractCegarLoop]: Abstraction has 51672 states and 72723 transitions. [2021-11-07 16:26:59,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-11-07 16:26:59,325 INFO L276 IsEmpty]: Start isEmpty. Operand 51672 states and 72723 transitions. [2021-11-07 16:26:59,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 16:26:59,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:59,330 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:26:59,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 16:26:59,330 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:26:59,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:59,331 INFO L85 PathProgramCache]: Analyzing trace with hash -71681847, now seen corresponding path program 1 times [2021-11-07 16:26:59,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:26:59,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743291258] [2021-11-07 16:26:59,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:59,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:26:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:26:59,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:26:59,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743291258] [2021-11-07 16:26:59,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743291258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:59,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:59,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:26:59,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690893004] [2021-11-07 16:26:59,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:59,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:26:59,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:26:59,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:26:59,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:59,492 INFO L87 Difference]: Start difference. First operand 51672 states and 72723 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-11-07 16:27:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:27:01,746 INFO L93 Difference]: Finished difference Result 134693 states and 189449 transitions. [2021-11-07 16:27:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:27:01,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 138 [2021-11-07 16:27:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:27:01,915 INFO L225 Difference]: With dead ends: 134693 [2021-11-07 16:27:01,915 INFO L226 Difference]: Without dead ends: 83040 [2021-11-07 16:27:02,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:27:02,005 INFO L933 BasicCegarLoop]: 6233 mSDtfsCounter, 4196 mSDsluCounter, 6004 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 187.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4201 SdHoareTripleChecker+Valid, 12237 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.96ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 194.06ms IncrementalHoareTripleChecker+Time [2021-11-07 16:27:02,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4201 Valid, 12237 Invalid, 10 Unknown, 0 Unchecked, 12.96ms Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 194.06ms Time] [2021-11-07 16:27:02,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83040 states. [2021-11-07 16:27:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83040 to 51702. [2021-11-07 16:27:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51702 states, 51302 states have (on average 1.403317609449924) internal successors, (71993), 51466 states have internal predecessors, (71993), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-07 16:27:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51702 states to 51702 states and 72753 transitions. [2021-11-07 16:27:03,650 INFO L78 Accepts]: Start accepts. Automaton has 51702 states and 72753 transitions. Word has length 138 [2021-11-07 16:27:03,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:27:03,651 INFO L470 AbstractCegarLoop]: Abstraction has 51702 states and 72753 transitions. [2021-11-07 16:27:03,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-11-07 16:27:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand 51702 states and 72753 transitions. [2021-11-07 16:27:03,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 16:27:03,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:27:03,655 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:27:03,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 16:27:03,655 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:27:03,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:27:03,656 INFO L85 PathProgramCache]: Analyzing trace with hash 18090854, now seen corresponding path program 1 times [2021-11-07 16:27:03,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:27:03,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685481387] [2021-11-07 16:27:03,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:27:03,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:27:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:27:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:27:03,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:27:03,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685481387] [2021-11-07 16:27:03,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685481387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:27:03,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:27:03,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:27:03,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095196641] [2021-11-07 16:27:03,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:27:03,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:27:03,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:27:03,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:27:03,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:27:03,785 INFO L87 Difference]: Start difference. First operand 51702 states and 72753 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2021-11-07 16:27:05,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:27:05,269 INFO L93 Difference]: Finished difference Result 103475 states and 145606 transitions. [2021-11-07 16:27:05,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:27:05,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 138 [2021-11-07 16:27:05,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:27:05,381 INFO L225 Difference]: With dead ends: 103475 [2021-11-07 16:27:05,381 INFO L226 Difference]: Without dead ends: 51792 [2021-11-07 16:27:05,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:27:05,454 INFO L933 BasicCegarLoop]: 6122 mSDtfsCounter, 9 mSDsluCounter, 12223 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18345 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.59ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.32ms IncrementalHoareTripleChecker+Time [2021-11-07 16:27:05,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 18345 Invalid, 51 Unknown, 0 Unchecked, 10.59ms Time], IncrementalHoareTripleChecker [9 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 78.32ms Time] [2021-11-07 16:27:05,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51792 states. [2021-11-07 16:27:06,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51792 to 51762. [2021-11-07 16:27:06,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51762 states, 51362 states have (on average 1.4028464623651726) internal successors, (72053), 51526 states have internal predecessors, (72053), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-07 16:27:07,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51762 states to 51762 states and 72813 transitions. [2021-11-07 16:27:07,004 INFO L78 Accepts]: Start accepts. Automaton has 51762 states and 72813 transitions. Word has length 138 [2021-11-07 16:27:07,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:27:07,004 INFO L470 AbstractCegarLoop]: Abstraction has 51762 states and 72813 transitions. [2021-11-07 16:27:07,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2021-11-07 16:27:07,005 INFO L276 IsEmpty]: Start isEmpty. Operand 51762 states and 72813 transitions. [2021-11-07 16:27:07,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 16:27:07,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:27:07,009 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:27:07,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 16:27:07,010 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:27:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:27:07,010 INFO L85 PathProgramCache]: Analyzing trace with hash 45156456, now seen corresponding path program 1 times [2021-11-07 16:27:07,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:27:07,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928473755] [2021-11-07 16:27:07,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:27:07,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:27:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:27:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:27:07,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:27:07,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928473755] [2021-11-07 16:27:07,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928473755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:27:07,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:27:07,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:27:07,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519368404] [2021-11-07 16:27:07,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:27:07,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:27:07,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:27:07,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:27:07,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:27:07,140 INFO L87 Difference]: Start difference. First operand 51762 states and 72813 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2021-11-07 16:27:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:27:08,396 INFO L93 Difference]: Finished difference Result 103685 states and 145816 transitions. [2021-11-07 16:27:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:27:08,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 138 [2021-11-07 16:27:08,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:27:08,502 INFO L225 Difference]: With dead ends: 103685 [2021-11-07 16:27:08,502 INFO L226 Difference]: Without dead ends: 51942 [2021-11-07 16:27:08,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.58ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:27:08,586 INFO L933 BasicCegarLoop]: 6122 mSDtfsCounter, 27 mSDsluCounter, 12217 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 18339 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.53ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.42ms IncrementalHoareTripleChecker+Time [2021-11-07 16:27:08,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 18339 Invalid, 57 Unknown, 0 Unchecked, 10.53ms Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 94.42ms Time] [2021-11-07 16:27:08,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51942 states. [2021-11-07 16:27:10,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51942 to 51822. [2021-11-07 16:27:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51822 states, 51422 states have (on average 1.4023764147641087) internal successors, (72113), 51586 states have internal predecessors, (72113), 190 states have call successors, (190), 90 states have call predecessors, (190), 90 states have return successors, (570), 160 states have call predecessors, (570), 190 states have call successors, (570) [2021-11-07 16:27:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51822 states to 51822 states and 72873 transitions. [2021-11-07 16:27:10,212 INFO L78 Accepts]: Start accepts. Automaton has 51822 states and 72873 transitions. Word has length 138 [2021-11-07 16:27:10,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:27:10,214 INFO L470 AbstractCegarLoop]: Abstraction has 51822 states and 72873 transitions. [2021-11-07 16:27:10,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2021-11-07 16:27:10,214 INFO L276 IsEmpty]: Start isEmpty. Operand 51822 states and 72873 transitions. [2021-11-07 16:27:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 16:27:10,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:27:10,218 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:27:10,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 16:27:10,218 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [uas_stat_cmpltErr0ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr1ASSERT_VIOLATIONERROR_FUNCTION, uas_stat_cmpltErr2ASSERT_VIOLATIONERROR_FUNCTION (and 117 more)] === [2021-11-07 16:27:10,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:27:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash 285396202, now seen corresponding path program 1 times [2021-11-07 16:27:10,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:27:10,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800468335] [2021-11-07 16:27:10,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:27:10,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:27:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:27:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:27:10,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:27:10,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800468335] [2021-11-07 16:27:10,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800468335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:27:10,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:27:10,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:27:10,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663564434] [2021-11-07 16:27:10,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:27:10,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:27:10,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:27:10,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:27:10,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:27:10,378 INFO L87 Difference]: Start difference. First operand 51822 states and 72873 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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)