./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.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 a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 18:18:08,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 18:18:08,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 18:18:08,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 18:18:08,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 18:18:08,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 18:18:08,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 18:18:08,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 18:18:08,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 18:18:08,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 18:18:08,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 18:18:08,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 18:18:08,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 18:18:08,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 18:18:08,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 18:18:08,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 18:18:08,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 18:18:08,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 18:18:08,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 18:18:08,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 18:18:08,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 18:18:08,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 18:18:08,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 18:18:08,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 18:18:08,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 18:18:08,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 18:18:08,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 18:18:08,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 18:18:08,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 18:18:08,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 18:18:08,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 18:18:08,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 18:18:08,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 18:18:08,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 18:18:08,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 18:18:08,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 18:18:08,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 18:18:08,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 18:18:08,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 18:18:08,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 18:18:08,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 18:18:08,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 18:18:08,613 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 18:18:08,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 18:18:08,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 18:18:08,614 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 18:18:08,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 18:18:08,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 18:18:08,615 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 18:18:08,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 18:18:08,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 18:18:08,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 18:18:08,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 18:18:08,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 18:18:08,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 18:18:08,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 18:18:08,617 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 18:18:08,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 18:18:08,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 18:18:08,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 18:18:08,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 18:18:08,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:18:08,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 18:18:08,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 18:18:08,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 18:18:08,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 18:18:08,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 18:18:08,619 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 18:18:08,619 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 18:18:08,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 18:18:08,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 18:18:08,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 [2021-11-02 18:18:08,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 18:18:08,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 18:18:08,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 18:18:08,844 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 18:18:08,845 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 18:18:08,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-02 18:18:08,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8424d5ff/6b8b933c1eb64da4a79d68198911eddc/FLAGacea794a4 [2021-11-02 18:18:09,505 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 18:18:09,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-02 18:18:09,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8424d5ff/6b8b933c1eb64da4a79d68198911eddc/FLAGacea794a4 [2021-11-02 18:18:09,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8424d5ff/6b8b933c1eb64da4a79d68198911eddc [2021-11-02 18:18:09,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 18:18:09,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 18:18:09,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 18:18:09,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 18:18:09,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 18:18:09,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:18:09" (1/1) ... [2021-11-02 18:18:09,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9bdb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:18:09, skipping insertion in model container [2021-11-02 18:18:09,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:18:09" (1/1) ... [2021-11-02 18:18:09,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 18:18:09,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 18:18:10,407 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-11-02 18:18:10,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:18:10,709 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 18:18:10,828 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-11-02 18:18:10,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:18:10,988 INFO L208 MainTranslator]: Completed translation [2021-11-02 18:18:10,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:18:10 WrapperNode [2021-11-02 18:18:10,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 18:18:10,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 18:18:10,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 18:18:10,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 18:18:10,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:18:10" (1/1) ... [2021-11-02 18:18:11,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:18:10" (1/1) ... [2021-11-02 18:18:11,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 18:18:11,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 18:18:11,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 18:18:11,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 18:18:11,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:18:10" (1/1) ... [2021-11-02 18:18:11,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:18:10" (1/1) ... [2021-11-02 18:18:11,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:18:10" (1/1) ... [2021-11-02 18:18:11,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:18:10" (1/1) ... [2021-11-02 18:18:11,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:18:10" (1/1) ... [2021-11-02 18:18:11,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:18:10" (1/1) ... [2021-11-02 18:18:11,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:18:10" (1/1) ... [2021-11-02 18:18:11,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 18:18:11,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 18:18:11,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 18:18:11,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 18:18:11,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:18:10" (1/1) ... [2021-11-02 18:18:11,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:18:11,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:18:11,516 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) [2021-11-02 18:18:11,555 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 [2021-11-02 18:18:11,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 18:18:11,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 18:18:11,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 18:18:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 18:18:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 18:18:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 18:18:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 18:18:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 18:18:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 18:18:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 18:18:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 18:18:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 18:18:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 18:18:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 18:18:11,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 18:18:13,164 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 18:18:13,165 INFO L299 CfgBuilder]: Removed 1398 assume(true) statements. [2021-11-02 18:18:13,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:18:13 BoogieIcfgContainer [2021-11-02 18:18:13,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 18:18:13,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 18:18:13,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 18:18:13,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 18:18:13,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 06:18:09" (1/3) ... [2021-11-02 18:18:13,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215f43f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:18:13, skipping insertion in model container [2021-11-02 18:18:13,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:18:10" (2/3) ... [2021-11-02 18:18:13,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215f43f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:18:13, skipping insertion in model container [2021-11-02 18:18:13,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:18:13" (3/3) ... [2021-11-02 18:18:13,176 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-02 18:18:13,179 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 18:18:13,180 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 18:18:13,226 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 18:18:13,233 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 [2021-11-02 18:18:13,234 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 18:18:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 1196 states, 1194 states have (on average 1.4028475711892798) internal successors, (1675), 1195 states have internal predecessors, (1675), 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) [2021-11-02 18:18:13,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-02 18:18:13,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:18:13,274 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] [2021-11-02 18:18:13,275 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:18:13,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:18:13,278 INFO L85 PathProgramCache]: Analyzing trace with hash 124254041, now seen corresponding path program 1 times [2021-11-02 18:18:13,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:18:13,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22321077] [2021-11-02 18:18:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:18:13,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:18:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:18:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:18:13,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:18:13,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22321077] [2021-11-02 18:18:13,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22321077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:18:13,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:18:13,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:18:13,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215442775] [2021-11-02 18:18:13,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:18:13,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:18:13,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:18:13,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:18:13,699 INFO L87 Difference]: Start difference. First operand has 1196 states, 1194 states have (on average 1.4028475711892798) internal successors, (1675), 1195 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-11-02 18:18:17,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:18:17,490 INFO L93 Difference]: Finished difference Result 3547 states and 4973 transitions. [2021-11-02 18:18:17,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:18:17,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2021-11-02 18:18:17,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:18:17,508 INFO L225 Difference]: With dead ends: 3547 [2021-11-02 18:18:17,509 INFO L226 Difference]: Without dead ends: 2314 [2021-11-02 18:18:17,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:18:17,517 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1565 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 3179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2984.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.58ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3570.51ms IncrementalHoareTripleChecker+Time [2021-11-02 18:18:17,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 38 Invalid, 3182 Unknown, 0 Unchecked, 14.58ms Time], IncrementalHoareTripleChecker [3 Valid, 3179 Invalid, 0 Unknown, 0 Unchecked, 3570.51ms Time] [2021-11-02 18:18:17,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2021-11-02 18:18:17,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2314. [2021-11-02 18:18:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2313 states have (on average 1.3398184176394292) internal successors, (3099), 2313 states have internal predecessors, (3099), 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) [2021-11-02 18:18:17,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3099 transitions. [2021-11-02 18:18:17,613 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3099 transitions. Word has length 20 [2021-11-02 18:18:17,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:18:17,613 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 3099 transitions. [2021-11-02 18:18:17,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-11-02 18:18:17,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3099 transitions. [2021-11-02 18:18:17,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 18:18:17,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:18:17,616 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] [2021-11-02 18:18:17,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 18:18:17,616 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:18:17,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:18:17,617 INFO L85 PathProgramCache]: Analyzing trace with hash -573068823, now seen corresponding path program 1 times [2021-11-02 18:18:17,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:18:17,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194400767] [2021-11-02 18:18:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:18:17,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:18:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:18:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:18:17,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:18:17,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194400767] [2021-11-02 18:18:17,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194400767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:18:17,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:18:17,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:18:17,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398697719] [2021-11-02 18:18:17,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:18:17,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:18:17,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:18:17,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:18:17,721 INFO L87 Difference]: Start difference. First operand 2314 states and 3099 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-02 18:18:22,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:18:22,775 INFO L93 Difference]: Finished difference Result 6904 states and 9254 transitions. [2021-11-02 18:18:22,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:18:22,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2021-11-02 18:18:22,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:18:22,790 INFO L225 Difference]: With dead ends: 6904 [2021-11-02 18:18:22,790 INFO L226 Difference]: Without dead ends: 4604 [2021-11-02 18:18:22,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.82ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:18:22,798 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1530 mSDsluCounter, 4496 mSDsCounter, 0 mSdLazyCounter, 6279 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4100.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.92ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 6279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4866.31ms IncrementalHoareTripleChecker+Time [2021-11-02 18:18:22,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 0 Invalid, 6288 Unknown, 0 Unchecked, 12.92ms Time], IncrementalHoareTripleChecker [9 Valid, 6279 Invalid, 0 Unknown, 0 Unchecked, 4866.31ms Time] [2021-11-02 18:18:22,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2021-11-02 18:18:22,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 4540. [2021-11-02 18:18:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4540 states, 4539 states have (on average 1.3379599030623486) internal successors, (6073), 4539 states have internal predecessors, (6073), 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) [2021-11-02 18:18:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4540 states to 4540 states and 6073 transitions. [2021-11-02 18:18:22,881 INFO L78 Accepts]: Start accepts. Automaton has 4540 states and 6073 transitions. Word has length 24 [2021-11-02 18:18:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:18:22,882 INFO L470 AbstractCegarLoop]: Abstraction has 4540 states and 6073 transitions. [2021-11-02 18:18:22,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-02 18:18:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4540 states and 6073 transitions. [2021-11-02 18:18:22,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 18:18:22,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:18:22,892 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:18:22,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 18:18:22,894 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:18:22,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:18:22,895 INFO L85 PathProgramCache]: Analyzing trace with hash 260287450, now seen corresponding path program 1 times [2021-11-02 18:18:22,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:18:22,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39977105] [2021-11-02 18:18:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:18:22,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:18:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:18:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 18:18:23,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:18:23,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39977105] [2021-11-02 18:18:23,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39977105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:18:23,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:18:23,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:18:23,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184650443] [2021-11-02 18:18:23,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:18:23,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:18:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:18:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:18:23,042 INFO L87 Difference]: Start difference. First operand 4540 states and 6073 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-11-02 18:18:28,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:18:28,792 INFO L93 Difference]: Finished difference Result 19720 states and 26309 transitions. [2021-11-02 18:18:28,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:18:28,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2021-11-02 18:18:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:18:28,843 INFO L225 Difference]: With dead ends: 19720 [2021-11-02 18:18:28,843 INFO L226 Difference]: Without dead ends: 15198 [2021-11-02 18:18:28,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:18:28,854 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2543 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 6984 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4435.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2543 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.43ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 6984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5387.83ms IncrementalHoareTripleChecker+Time [2021-11-02 18:18:28,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2543 Valid, 0 Invalid, 6995 Unknown, 0 Unchecked, 10.43ms Time], IncrementalHoareTripleChecker [11 Valid, 6984 Invalid, 0 Unknown, 0 Unchecked, 5387.83ms Time] [2021-11-02 18:18:28,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15198 states. [2021-11-02 18:18:29,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15198 to 7736. [2021-11-02 18:18:29,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7736 states, 7735 states have (on average 1.333678086619263) internal successors, (10316), 7735 states have internal predecessors, (10316), 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) [2021-11-02 18:18:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7736 states to 7736 states and 10316 transitions. [2021-11-02 18:18:29,084 INFO L78 Accepts]: Start accepts. Automaton has 7736 states and 10316 transitions. Word has length 63 [2021-11-02 18:18:29,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:18:29,085 INFO L470 AbstractCegarLoop]: Abstraction has 7736 states and 10316 transitions. [2021-11-02 18:18:29,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-11-02 18:18:29,085 INFO L276 IsEmpty]: Start isEmpty. Operand 7736 states and 10316 transitions. [2021-11-02 18:18:29,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 18:18:29,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:18:29,093 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:18:29,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 18:18:29,093 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:18:29,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:18:29,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1945592412, now seen corresponding path program 1 times [2021-11-02 18:18:29,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:18:29,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024810095] [2021-11-02 18:18:29,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:18:29,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:18:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:18:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 18:18:29,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:18:29,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024810095] [2021-11-02 18:18:29,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024810095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:18:29,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:18:29,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:18:29,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145689972] [2021-11-02 18:18:29,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:18:29,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:18:29,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:18:29,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:18:29,188 INFO L87 Difference]: Start difference. First operand 7736 states and 10316 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-02 18:18:34,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:18:34,456 INFO L93 Difference]: Finished difference Result 35700 states and 47532 transitions. [2021-11-02 18:18:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:18:34,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-02 18:18:34,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:18:34,536 INFO L225 Difference]: With dead ends: 35700 [2021-11-02 18:18:34,536 INFO L226 Difference]: Without dead ends: 27982 [2021-11-02 18:18:34,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:18:34,556 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3632 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 5774 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3984.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.09ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 5774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4778.77ms IncrementalHoareTripleChecker+Time [2021-11-02 18:18:34,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3632 Valid, 0 Invalid, 5787 Unknown, 0 Unchecked, 18.09ms Time], IncrementalHoareTripleChecker [13 Valid, 5774 Invalid, 0 Unknown, 0 Unchecked, 4778.77ms Time] [2021-11-02 18:18:34,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27982 states. [2021-11-02 18:18:35,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27982 to 15124. [2021-11-02 18:18:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15124 states, 15123 states have (on average 1.3321430933015936) internal successors, (20146), 15123 states have internal predecessors, (20146), 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) [2021-11-02 18:18:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15124 states to 15124 states and 20146 transitions. [2021-11-02 18:18:35,137 INFO L78 Accepts]: Start accepts. Automaton has 15124 states and 20146 transitions. Word has length 64 [2021-11-02 18:18:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:18:35,137 INFO L470 AbstractCegarLoop]: Abstraction has 15124 states and 20146 transitions. [2021-11-02 18:18:35,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-02 18:18:35,138 INFO L276 IsEmpty]: Start isEmpty. Operand 15124 states and 20146 transitions. [2021-11-02 18:18:35,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 18:18:35,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:18:35,147 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:18:35,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 18:18:35,147 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:18:35,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:18:35,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1296173829, now seen corresponding path program 1 times [2021-11-02 18:18:35,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:18:35,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836814667] [2021-11-02 18:18:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:18:35,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:18:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:18:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 18:18:35,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:18:35,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836814667] [2021-11-02 18:18:35,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836814667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:18:35,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:18:35,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:18:35,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188165784] [2021-11-02 18:18:35,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:18:35,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:18:35,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:18:35,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:18:35,224 INFO L87 Difference]: Start difference. First operand 15124 states and 20146 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-11-02 18:18:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:18:40,973 INFO L93 Difference]: Finished difference Result 70372 states and 93614 transitions. [2021-11-02 18:18:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:18:40,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-11-02 18:18:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:18:41,099 INFO L225 Difference]: With dead ends: 70372 [2021-11-02 18:18:41,100 INFO L226 Difference]: Without dead ends: 55266 [2021-11-02 18:18:41,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:18:41,142 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3638 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 5773 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3860.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3638 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.16ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 5773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4587.13ms IncrementalHoareTripleChecker+Time [2021-11-02 18:18:41,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3638 Valid, 0 Invalid, 5786 Unknown, 0 Unchecked, 11.16ms Time], IncrementalHoareTripleChecker [13 Valid, 5773 Invalid, 0 Unknown, 0 Unchecked, 4587.13ms Time] [2021-11-02 18:18:41,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55266 states. [2021-11-02 18:18:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55266 to 29588. [2021-11-02 18:18:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29588 states, 29587 states have (on average 1.3307871700408964) internal successors, (39374), 29587 states have internal predecessors, (39374), 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) [2021-11-02 18:18:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29588 states to 29588 states and 39374 transitions. [2021-11-02 18:18:42,084 INFO L78 Accepts]: Start accepts. Automaton has 29588 states and 39374 transitions. Word has length 65 [2021-11-02 18:18:42,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:18:42,086 INFO L470 AbstractCegarLoop]: Abstraction has 29588 states and 39374 transitions. [2021-11-02 18:18:42,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-11-02 18:18:42,086 INFO L276 IsEmpty]: Start isEmpty. Operand 29588 states and 39374 transitions. [2021-11-02 18:18:42,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 18:18:42,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:18:42,097 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:18:42,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 18:18:42,098 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:18:42,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:18:42,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1636642589, now seen corresponding path program 1 times [2021-11-02 18:18:42,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:18:42,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018528350] [2021-11-02 18:18:42,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:18:42,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:18:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:18:42,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 18:18:42,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:18:42,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018528350] [2021-11-02 18:18:42,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018528350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:18:42,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:18:42,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:18:42,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137824389] [2021-11-02 18:18:42,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:18:42,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:18:42,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:18:42,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:18:42,196 INFO L87 Difference]: Start difference. First operand 29588 states and 39374 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-02 18:18:49,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:18:49,655 INFO L93 Difference]: Finished difference Result 138764 states and 184450 transitions. [2021-11-02 18:18:49,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:18:49,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-02 18:18:49,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:18:50,030 INFO L225 Difference]: With dead ends: 138764 [2021-11-02 18:18:50,031 INFO L226 Difference]: Without dead ends: 109194 [2021-11-02 18:18:50,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.96ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:18:50,086 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3644 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 5772 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4272.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3644 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.72ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 5772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5060.14ms IncrementalHoareTripleChecker+Time [2021-11-02 18:18:50,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3644 Valid, 0 Invalid, 5785 Unknown, 0 Unchecked, 12.72ms Time], IncrementalHoareTripleChecker [13 Valid, 5772 Invalid, 0 Unknown, 0 Unchecked, 5060.14ms Time] [2021-11-02 18:18:50,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109194 states. [2021-11-02 18:18:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109194 to 57888. [2021-11-02 18:18:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57888 states, 57887 states have (on average 1.329452208613333) internal successors, (76958), 57887 states have internal predecessors, (76958), 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) [2021-11-02 18:18:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57888 states to 57888 states and 76958 transitions. [2021-11-02 18:18:52,080 INFO L78 Accepts]: Start accepts. Automaton has 57888 states and 76958 transitions. Word has length 66 [2021-11-02 18:18:52,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:18:52,080 INFO L470 AbstractCegarLoop]: Abstraction has 57888 states and 76958 transitions. [2021-11-02 18:18:52,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-02 18:18:52,081 INFO L276 IsEmpty]: Start isEmpty. Operand 57888 states and 76958 transitions. [2021-11-02 18:18:52,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 18:18:52,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:18:52,088 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 18:18:52,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 18:18:52,089 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:18:52,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:18:52,089 INFO L85 PathProgramCache]: Analyzing trace with hash 929253526, now seen corresponding path program 1 times [2021-11-02 18:18:52,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:18:52,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138502149] [2021-11-02 18:18:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:18:52,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:18:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:18:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 18:18:52,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:18:52,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138502149] [2021-11-02 18:18:52,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138502149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:18:52,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:18:52,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:18:52,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10393378] [2021-11-02 18:18:52,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:18:52,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:18:52,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:18:52,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:18:52,193 INFO L87 Difference]: Start difference. First operand 57888 states and 76958 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-02 18:19:03,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:19:03,319 INFO L93 Difference]: Finished difference Result 196872 states and 261570 transitions. [2021-11-02 18:19:03,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 18:19:03,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 70 [2021-11-02 18:19:03,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:19:03,717 INFO L225 Difference]: With dead ends: 196872 [2021-11-02 18:19:03,719 INFO L226 Difference]: Without dead ends: 139002 [2021-11-02 18:19:03,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.50ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:19:03,817 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5789 mSDsluCounter, 6371 mSDsCounter, 0 mSdLazyCounter, 9461 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6250.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5789 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.99ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 9461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7329.58ms IncrementalHoareTripleChecker+Time [2021-11-02 18:19:03,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5789 Valid, 0 Invalid, 9493 Unknown, 0 Unchecked, 17.99ms Time], IncrementalHoareTripleChecker [32 Valid, 9461 Invalid, 0 Unknown, 0 Unchecked, 7329.58ms Time] [2021-11-02 18:19:03,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139002 states. [2021-11-02 18:19:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139002 to 58048. [2021-11-02 18:19:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58048 states, 58047 states have (on average 1.32854411080676) internal successors, (77118), 58047 states have internal predecessors, (77118), 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) [2021-11-02 18:19:06,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58048 states to 58048 states and 77118 transitions. [2021-11-02 18:19:06,511 INFO L78 Accepts]: Start accepts. Automaton has 58048 states and 77118 transitions. Word has length 70 [2021-11-02 18:19:06,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:19:06,512 INFO L470 AbstractCegarLoop]: Abstraction has 58048 states and 77118 transitions. [2021-11-02 18:19:06,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-02 18:19:06,512 INFO L276 IsEmpty]: Start isEmpty. Operand 58048 states and 77118 transitions. [2021-11-02 18:19:06,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 18:19:06,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:19:06,518 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] [2021-11-02 18:19:06,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 18:19:06,519 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:19:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:19:06,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1915905124, now seen corresponding path program 1 times [2021-11-02 18:19:06,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:19:06,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165287860] [2021-11-02 18:19:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:19:06,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:19:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:19:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 18:19:06,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:19:06,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165287860] [2021-11-02 18:19:06,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165287860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:19:06,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:19:06,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:19:06,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358438763] [2021-11-02 18:19:06,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:19:06,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:19:06,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:19:06,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:19:06,581 INFO L87 Difference]: Start difference. First operand 58048 states and 77118 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-02 18:19:11,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:19:11,861 INFO L93 Difference]: Finished difference Result 137700 states and 183004 transitions. [2021-11-02 18:19:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:19:11,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-02 18:19:11,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:19:12,022 INFO L225 Difference]: With dead ends: 137700 [2021-11-02 18:19:12,023 INFO L226 Difference]: Without dead ends: 79670 [2021-11-02 18:19:12,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:19:12,116 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 829 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 3519 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2164.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.62ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2602.06ms IncrementalHoareTripleChecker+Time [2021-11-02 18:19:12,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 0 Invalid, 3526 Unknown, 0 Unchecked, 3.62ms Time], IncrementalHoareTripleChecker [7 Valid, 3519 Invalid, 0 Unknown, 0 Unchecked, 2602.06ms Time] [2021-11-02 18:19:12,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79670 states. [2021-11-02 18:19:14,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79670 to 68528. [2021-11-02 18:19:14,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68528 states, 68527 states have (on average 1.3343353714594248) internal successors, (91438), 68527 states have internal predecessors, (91438), 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) [2021-11-02 18:19:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68528 states to 68528 states and 91438 transitions. [2021-11-02 18:19:14,657 INFO L78 Accepts]: Start accepts. Automaton has 68528 states and 91438 transitions. Word has length 74 [2021-11-02 18:19:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:19:14,658 INFO L470 AbstractCegarLoop]: Abstraction has 68528 states and 91438 transitions. [2021-11-02 18:19:14,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-02 18:19:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 68528 states and 91438 transitions. [2021-11-02 18:19:14,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-02 18:19:14,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:19:14,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 18:19:14,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 18:19:14,668 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:19:14,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:19:14,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2119199959, now seen corresponding path program 1 times [2021-11-02 18:19:14,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:19:14,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567487492] [2021-11-02 18:19:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:19:14,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:19:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:19:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:19:14,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:19:14,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567487492] [2021-11-02 18:19:14,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567487492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:19:14,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:19:14,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:19:14,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501225651] [2021-11-02 18:19:14,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:19:14,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:19:14,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:19:14,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:19:14,759 INFO L87 Difference]: Start difference. First operand 68528 states and 91438 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-11-02 18:19:21,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:19:21,679 INFO L93 Difference]: Finished difference Result 181548 states and 243328 transitions. [2021-11-02 18:19:21,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:19:21,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 220 [2021-11-02 18:19:21,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:19:21,933 INFO L225 Difference]: With dead ends: 181548 [2021-11-02 18:19:21,934 INFO L226 Difference]: Without dead ends: 113038 [2021-11-02 18:19:22,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:19:22,036 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1116 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 4167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2888.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.18ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3429.46ms IncrementalHoareTripleChecker+Time [2021-11-02 18:19:22,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 0 Invalid, 4169 Unknown, 0 Unchecked, 5.18ms Time], IncrementalHoareTripleChecker [2 Valid, 4167 Invalid, 0 Unknown, 0 Unchecked, 3429.46ms Time] [2021-11-02 18:19:22,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113038 states. [2021-11-02 18:19:25,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113038 to 113032. [2021-11-02 18:19:25,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113032 states, 113031 states have (on average 1.3427997628969044) internal successors, (151778), 113031 states have internal predecessors, (151778), 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) [2021-11-02 18:19:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113032 states to 113032 states and 151778 transitions. [2021-11-02 18:19:26,322 INFO L78 Accepts]: Start accepts. Automaton has 113032 states and 151778 transitions. Word has length 220 [2021-11-02 18:19:26,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:19:26,322 INFO L470 AbstractCegarLoop]: Abstraction has 113032 states and 151778 transitions. [2021-11-02 18:19:26,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-11-02 18:19:26,323 INFO L276 IsEmpty]: Start isEmpty. Operand 113032 states and 151778 transitions. [2021-11-02 18:19:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-02 18:19:26,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:19:26,356 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 18:19:26,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 18:19:26,356 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:19:26,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:19:26,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1774173655, now seen corresponding path program 1 times [2021-11-02 18:19:26,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:19:26,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326304646] [2021-11-02 18:19:26,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:19:26,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:19:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:19:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 18:19:26,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:19:26,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326304646] [2021-11-02 18:19:26,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326304646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:19:26,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:19:26,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:19:26,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700397304] [2021-11-02 18:19:26,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:19:26,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:19:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:19:26,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:19:26,472 INFO L87 Difference]: Start difference. First operand 113032 states and 151778 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2021-11-02 18:19:32,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:19:32,833 INFO L93 Difference]: Finished difference Result 226430 states and 304303 transitions. [2021-11-02 18:19:32,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:19:32,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 229 [2021-11-02 18:19:32,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:19:33,086 INFO L225 Difference]: With dead ends: 226430 [2021-11-02 18:19:33,086 INFO L226 Difference]: Without dead ends: 113416 [2021-11-02 18:19:33,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:19:33,391 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 3132 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2184.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.20ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2558.05ms IncrementalHoareTripleChecker+Time [2021-11-02 18:19:33,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3142 Unknown, 0 Unchecked, 3.20ms Time], IncrementalHoareTripleChecker [10 Valid, 3132 Invalid, 0 Unknown, 0 Unchecked, 2558.05ms Time] [2021-11-02 18:19:33,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113416 states.