./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 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-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-5b36d44 [2021-11-07 13:03:05,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:03:05,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:03:05,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:03:05,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:03:05,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:03:05,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:03:05,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:03:05,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:03:05,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:03:05,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:03:05,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:03:05,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:03:05,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:03:05,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:03:05,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:03:05,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:03:05,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:03:05,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:03:05,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:03:05,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:03:05,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:03:05,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:03:05,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:03:05,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:03:05,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:03:05,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:03:05,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:03:05,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:03:05,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:03:05,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:03:05,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:03:05,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:03:05,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:03:05,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:03:05,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:03:05,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:03:05,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:03:05,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:03:05,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:03:05,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:03:05,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:03:05,641 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:03:05,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:03:05,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:03:05,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:03:05,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:03:05,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:03:05,643 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:03:05,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:03:05,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:03:05,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:03:05,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:03:05,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:03:05,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:03:05,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:03:05,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:03:05,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:03:05,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:03:05,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:03:05,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:03:05,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:03:05,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:03:05,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:03:05,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:03:05,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:03:05,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:03:05,646 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:03:05,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:03:05,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:03:05,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:03:05,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 [2021-11-07 13:03:05,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:03:05,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:03:05,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:03:05,856 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:03:05,857 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:03:05,858 INFO L432 ainManager$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 [2021-11-07 13:03:05,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51acd948e/82f667284c474034a787ffb5bbe1a0e3/FLAG51a064e7b [2021-11-07 13:03:06,577 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:03:06,578 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 [2021-11-07 13:03:06,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51acd948e/82f667284c474034a787ffb5bbe1a0e3/FLAG51a064e7b [2021-11-07 13:03:06,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51acd948e/82f667284c474034a787ffb5bbe1a0e3 [2021-11-07 13:03:06,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:03:06,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:03:06,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:03:06,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:03:06,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:03:06,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:06" (1/1) ... [2021-11-07 13:03:06,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ecc2018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:06, skipping insertion in model container [2021-11-07 13:03:06,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:06" (1/1) ... [2021-11-07 13:03:06,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:03:07,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:03:07,569 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] [2021-11-07 13:03:07,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:03:07,904 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:03:08,011 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] [2021-11-07 13:03:08,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:03:08,158 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:03:08,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:08 WrapperNode [2021-11-07 13:03:08,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:03:08,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:03:08,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:03:08,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:03:08,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:08" (1/1) ... [2021-11-07 13:03:08,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:08" (1/1) ... [2021-11-07 13:03:08,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:03:08,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:03:08,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:03:08,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:03:08,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:08" (1/1) ... [2021-11-07 13:03:08,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:08" (1/1) ... [2021-11-07 13:03:08,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:08" (1/1) ... [2021-11-07 13:03:08,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:08" (1/1) ... [2021-11-07 13:03:08,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:08" (1/1) ... [2021-11-07 13:03:08,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:08" (1/1) ... [2021-11-07 13:03:08,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:08" (1/1) ... [2021-11-07 13:03:08,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:03:08,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:03:08,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:03:08,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:03:08,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:08" (1/1) ... [2021-11-07 13:03:08,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:03:08,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:03:08,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 13:03:08,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 13:03:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:03:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:03:08,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:03:08,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:03:08,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:03:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:03:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:03:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:03:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:03:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:03:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:03:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:03:08,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:03:08,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:03:08,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:03:11,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:03:11,709 INFO L299 CfgBuilder]: Removed 1398 assume(true) statements. [2021-11-07 13:03:11,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:03:11 BoogieIcfgContainer [2021-11-07 13:03:11,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:03:11,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:03:11,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:03:11,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:03:11,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:03:06" (1/3) ... [2021-11-07 13:03:11,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9259d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:03:11, skipping insertion in model container [2021-11-07 13:03:11,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:08" (2/3) ... [2021-11-07 13:03:11,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9259d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:03:11, skipping insertion in model container [2021-11-07 13:03:11,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:03:11" (3/3) ... [2021-11-07 13:03:11,716 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 [2021-11-07 13:03:11,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:03:11,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 13:03:11,750 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:03:11,753 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 13:03:11,754 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 13:03:11,773 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) [2021-11-07 13:03:11,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 13:03:11,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:03:11,777 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] [2021-11-07 13:03:11,778 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:03:11,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:03:11,781 INFO L85 PathProgramCache]: Analyzing trace with hash 124254041, now seen corresponding path program 1 times [2021-11-07 13:03:11,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:03:11,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908257668] [2021-11-07 13:03:11,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:03:11,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:03:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:03:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:03:12,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:03:12,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908257668] [2021-11-07 13:03:12,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908257668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:03:12,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:03:12,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:03:12,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129113278] [2021-11-07 13:03:12,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:03:12,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:03:12,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:03:12,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:03:12,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:03:12,139 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) [2021-11-07 13:03:12,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:03:12,429 INFO L93 Difference]: Finished difference Result 3547 states and 4973 transitions. [2021-11-07 13:03:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:03:12,432 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 [2021-11-07 13:03:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:03:12,453 INFO L225 Difference]: With dead ends: 3547 [2021-11-07 13:03:12,453 INFO L226 Difference]: Without dead ends: 2314 [2021-11-07 13:03:12,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:03:12,469 INFO L933 BasicCegarLoop]: 1608 mSDtfsCounter, 1565 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.23ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.45ms IncrementalHoareTripleChecker+Time [2021-11-07 13:03:12,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 3205 Invalid, 15 Unknown, 0 Unchecked, 23.23ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 122.45ms Time] [2021-11-07 13:03:12,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2021-11-07 13:03:12,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2314. [2021-11-07 13:03:12,572 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) [2021-11-07 13:03:12,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3099 transitions. [2021-11-07 13:03:12,579 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3099 transitions. Word has length 20 [2021-11-07 13:03:12,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:03:12,579 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 3099 transitions. [2021-11-07 13:03:12,579 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) [2021-11-07 13:03:12,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3099 transitions. [2021-11-07 13:03:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 13:03:12,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:03:12,586 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] [2021-11-07 13:03:12,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:03:12,586 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:03:12,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:03:12,589 INFO L85 PathProgramCache]: Analyzing trace with hash -573068823, now seen corresponding path program 1 times [2021-11-07 13:03:12,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:03:12,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791610780] [2021-11-07 13:03:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:03:12,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:03:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:03:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:03:12,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:03:12,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791610780] [2021-11-07 13:03:12,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791610780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:03:12,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:03:12,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:03:12,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870851392] [2021-11-07 13:03:12,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:03:12,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:03:12,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:03:12,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:03:12,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:03:12,744 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) [2021-11-07 13:03:12,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:03:12,974 INFO L93 Difference]: Finished difference Result 6904 states and 9254 transitions. [2021-11-07 13:03:12,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:03:12,975 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 [2021-11-07 13:03:12,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:03:12,986 INFO L225 Difference]: With dead ends: 6904 [2021-11-07 13:03:12,987 INFO L226 Difference]: Without dead ends: 4604 [2021-11-07 13:03:12,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.61ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:03:12,991 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 1530 mSDsluCounter, 4496 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 6007 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.09ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.98ms IncrementalHoareTripleChecker+Time [2021-11-07 13:03:12,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 6007 Invalid, 281 Unknown, 0 Unchecked, 7.09ms Time], IncrementalHoareTripleChecker [9 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 141.98ms Time] [2021-11-07 13:03:12,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2021-11-07 13:03:13,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 4540. [2021-11-07 13:03:13,126 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) [2021-11-07 13:03:13,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4540 states to 4540 states and 6073 transitions. [2021-11-07 13:03:13,134 INFO L78 Accepts]: Start accepts. Automaton has 4540 states and 6073 transitions. Word has length 24 [2021-11-07 13:03:13,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:03:13,135 INFO L470 AbstractCegarLoop]: Abstraction has 4540 states and 6073 transitions. [2021-11-07 13:03:13,135 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) [2021-11-07 13:03:13,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4540 states and 6073 transitions. [2021-11-07 13:03:13,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 13:03:13,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:03:13,144 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] [2021-11-07 13:03:13,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:03:13,144 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:03:13,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:03:13,145 INFO L85 PathProgramCache]: Analyzing trace with hash 260287450, now seen corresponding path program 1 times [2021-11-07 13:03:13,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:03:13,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420641566] [2021-11-07 13:03:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:03:13,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:03:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:03:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 13:03:13,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:03:13,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420641566] [2021-11-07 13:03:13,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420641566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:03:13,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:03:13,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:03:13,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106287113] [2021-11-07 13:03:13,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:03:13,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:03:13,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:03:13,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:03:13,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:03:13,250 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) [2021-11-07 13:03:13,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:03:13,620 INFO L93 Difference]: Finished difference Result 19720 states and 26309 transitions. [2021-11-07 13:03:13,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:03:13,621 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 [2021-11-07 13:03:13,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:03:13,660 INFO L225 Difference]: With dead ends: 19720 [2021-11-07 13:03:13,661 INFO L226 Difference]: Without dead ends: 15198 [2021-11-07 13:03:13,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:03:13,675 INFO L933 BasicCegarLoop]: 3731 mSDtfsCounter, 2543 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2543 SdHoareTripleChecker+Valid, 6927 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.76ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.61ms IncrementalHoareTripleChecker+Time [2021-11-07 13:03:13,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2543 Valid, 6927 Invalid, 68 Unknown, 0 Unchecked, 7.76ms Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 41.61ms Time] [2021-11-07 13:03:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15198 states. [2021-11-07 13:03:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15198 to 7736. [2021-11-07 13:03:13,952 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) [2021-11-07 13:03:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7736 states to 7736 states and 10316 transitions. [2021-11-07 13:03:13,967 INFO L78 Accepts]: Start accepts. Automaton has 7736 states and 10316 transitions. Word has length 63 [2021-11-07 13:03:13,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:03:13,968 INFO L470 AbstractCegarLoop]: Abstraction has 7736 states and 10316 transitions. [2021-11-07 13:03:13,968 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) [2021-11-07 13:03:13,968 INFO L276 IsEmpty]: Start isEmpty. Operand 7736 states and 10316 transitions. [2021-11-07 13:03:13,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 13:03:13,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:03:13,974 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] [2021-11-07 13:03:13,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:03:13,975 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:03:13,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:03:13,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1945592412, now seen corresponding path program 1 times [2021-11-07 13:03:13,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:03:13,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279133220] [2021-11-07 13:03:13,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:03:13,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:03:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:03:14,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 13:03:14,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:03:14,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279133220] [2021-11-07 13:03:14,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279133220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:03:14,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:03:14,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:03:14,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813251941] [2021-11-07 13:03:14,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:03:14,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:03:14,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:03:14,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:03:14,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:03:14,069 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) [2021-11-07 13:03:14,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:03:14,566 INFO L93 Difference]: Finished difference Result 35700 states and 47532 transitions. [2021-11-07 13:03:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:03:14,566 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 [2021-11-07 13:03:14,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:03:14,625 INFO L225 Difference]: With dead ends: 35700 [2021-11-07 13:03:14,625 INFO L226 Difference]: Without dead ends: 27982 [2021-11-07 13:03:14,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.02ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:03:14,644 INFO L933 BasicCegarLoop]: 2642 mSDtfsCounter, 3632 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 5727 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.81ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.73ms IncrementalHoareTripleChecker+Time [2021-11-07 13:03:14,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3632 Valid, 5727 Invalid, 60 Unknown, 0 Unchecked, 7.81ms Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 37.73ms Time] [2021-11-07 13:03:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27982 states. [2021-11-07 13:03:15,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27982 to 15124. [2021-11-07 13:03:15,198 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) [2021-11-07 13:03:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15124 states to 15124 states and 20146 transitions. [2021-11-07 13:03:15,232 INFO L78 Accepts]: Start accepts. Automaton has 15124 states and 20146 transitions. Word has length 64 [2021-11-07 13:03:15,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:03:15,233 INFO L470 AbstractCegarLoop]: Abstraction has 15124 states and 20146 transitions. [2021-11-07 13:03:15,233 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) [2021-11-07 13:03:15,234 INFO L276 IsEmpty]: Start isEmpty. Operand 15124 states and 20146 transitions. [2021-11-07 13:03:15,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 13:03:15,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:03:15,243 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] [2021-11-07 13:03:15,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:03:15,244 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:03:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:03:15,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1296173829, now seen corresponding path program 1 times [2021-11-07 13:03:15,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:03:15,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414683019] [2021-11-07 13:03:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:03:15,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:03:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:03:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 13:03:15,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:03:15,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414683019] [2021-11-07 13:03:15,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414683019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:03:15,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:03:15,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:03:15,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732071163] [2021-11-07 13:03:15,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:03:15,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:03:15,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:03:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:03:15,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:03:15,321 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) [2021-11-07 13:03:16,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:03:16,406 INFO L93 Difference]: Finished difference Result 70372 states and 93614 transitions. [2021-11-07 13:03:16,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:03:16,406 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 [2021-11-07 13:03:16,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:03:16,521 INFO L225 Difference]: With dead ends: 70372 [2021-11-07 13:03:16,521 INFO L226 Difference]: Without dead ends: 55266 [2021-11-07 13:03:16,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:03:16,553 INFO L933 BasicCegarLoop]: 2641 mSDtfsCounter, 3638 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3638 SdHoareTripleChecker+Valid, 5726 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.01ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.75ms IncrementalHoareTripleChecker+Time [2021-11-07 13:03:16,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3638 Valid, 5726 Invalid, 60 Unknown, 0 Unchecked, 11.01ms Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 39.75ms Time] [2021-11-07 13:03:16,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55266 states. [2021-11-07 13:03:17,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55266 to 29588. [2021-11-07 13:03:17,476 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) [2021-11-07 13:03:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29588 states to 29588 states and 39374 transitions. [2021-11-07 13:03:17,549 INFO L78 Accepts]: Start accepts. Automaton has 29588 states and 39374 transitions. Word has length 65 [2021-11-07 13:03:17,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:03:17,552 INFO L470 AbstractCegarLoop]: Abstraction has 29588 states and 39374 transitions. [2021-11-07 13:03:17,552 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) [2021-11-07 13:03:17,552 INFO L276 IsEmpty]: Start isEmpty. Operand 29588 states and 39374 transitions. [2021-11-07 13:03:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 13:03:17,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:03:17,560 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] [2021-11-07 13:03:17,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:03:17,561 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:03:17,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:03:17,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1636642589, now seen corresponding path program 1 times [2021-11-07 13:03:17,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:03:17,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420390659] [2021-11-07 13:03:17,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:03:17,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:03:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:03:17,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 13:03:17,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:03:17,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420390659] [2021-11-07 13:03:17,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420390659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:03:17,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:03:17,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:03:17,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479233951] [2021-11-07 13:03:17,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:03:17,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:03:17,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:03:17,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:03:17,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:03:17,646 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) [2021-11-07 13:03:19,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:03:19,879 INFO L93 Difference]: Finished difference Result 138764 states and 184450 transitions. [2021-11-07 13:03:19,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:03:19,880 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 [2021-11-07 13:03:19,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:03:20,139 INFO L225 Difference]: With dead ends: 138764 [2021-11-07 13:03:20,139 INFO L226 Difference]: Without dead ends: 109194 [2021-11-07 13:03:20,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:03:20,359 INFO L933 BasicCegarLoop]: 2640 mSDtfsCounter, 3644 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3644 SdHoareTripleChecker+Valid, 5725 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.80ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.99ms IncrementalHoareTripleChecker+Time [2021-11-07 13:03:20,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3644 Valid, 5725 Invalid, 60 Unknown, 0 Unchecked, 8.80ms Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 43.99ms Time] [2021-11-07 13:03:20,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109194 states. [2021-11-07 13:03:22,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109194 to 57888. [2021-11-07 13:03:22,293 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) [2021-11-07 13:03:22,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57888 states to 57888 states and 76958 transitions. [2021-11-07 13:03:22,384 INFO L78 Accepts]: Start accepts. Automaton has 57888 states and 76958 transitions. Word has length 66 [2021-11-07 13:03:22,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:03:22,384 INFO L470 AbstractCegarLoop]: Abstraction has 57888 states and 76958 transitions. [2021-11-07 13:03:22,384 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) [2021-11-07 13:03:22,384 INFO L276 IsEmpty]: Start isEmpty. Operand 57888 states and 76958 transitions. [2021-11-07 13:03:22,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 13:03:22,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:03:22,392 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] [2021-11-07 13:03:22,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 13:03:22,392 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:03:22,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:03:22,392 INFO L85 PathProgramCache]: Analyzing trace with hash 929253526, now seen corresponding path program 1 times [2021-11-07 13:03:22,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:03:22,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400665925] [2021-11-07 13:03:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:03:22,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:03:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:03:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 13:03:22,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:03:22,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400665925] [2021-11-07 13:03:22,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400665925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:03:22,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:03:22,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:03:22,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463298699] [2021-11-07 13:03:22,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:03:22,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:03:22,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:03:22,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:03:22,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:03:22,473 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) [2021-11-07 13:03:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:03:26,011 INFO L93 Difference]: Finished difference Result 196872 states and 261570 transitions. [2021-11-07 13:03:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 13:03:26,011 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 [2021-11-07 13:03:26,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:03:26,350 INFO L225 Difference]: With dead ends: 196872 [2021-11-07 13:03:26,351 INFO L226 Difference]: Without dead ends: 139002 [2021-11-07 13:03:26,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.28ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 13:03:26,480 INFO L933 BasicCegarLoop]: 2979 mSDtfsCounter, 5789 mSDsluCounter, 6371 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5789 SdHoareTripleChecker+Valid, 9350 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.24ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.12ms IncrementalHoareTripleChecker+Time [2021-11-07 13:03:26,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5789 Valid, 9350 Invalid, 143 Unknown, 0 Unchecked, 10.24ms Time], IncrementalHoareTripleChecker [32 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 74.12ms Time] [2021-11-07 13:03:26,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139002 states. [2021-11-07 13:03:28,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139002 to 58048. [2021-11-07 13:03:28,966 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) [2021-11-07 13:03:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58048 states to 58048 states and 77118 transitions. [2021-11-07 13:03:29,047 INFO L78 Accepts]: Start accepts. Automaton has 58048 states and 77118 transitions. Word has length 70 [2021-11-07 13:03:29,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:03:29,047 INFO L470 AbstractCegarLoop]: Abstraction has 58048 states and 77118 transitions. [2021-11-07 13:03:29,047 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) [2021-11-07 13:03:29,048 INFO L276 IsEmpty]: Start isEmpty. Operand 58048 states and 77118 transitions. [2021-11-07 13:03:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 13:03:29,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:03:29,053 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] [2021-11-07 13:03:29,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 13:03:29,053 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:03:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:03:29,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1915905124, now seen corresponding path program 1 times [2021-11-07 13:03:29,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:03:29,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109848605] [2021-11-07 13:03:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:03:29,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:03:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:03:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 13:03:29,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:03:29,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109848605] [2021-11-07 13:03:29,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109848605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:03:29,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:03:29,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:03:29,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935912971] [2021-11-07 13:03:29,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:03:29,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:03:29,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:03:29,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:03:29,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:03:29,099 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) [2021-11-07 13:03:31,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:03:31,493 INFO L93 Difference]: Finished difference Result 137700 states and 183004 transitions. [2021-11-07 13:03:31,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:03:31,494 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 [2021-11-07 13:03:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:03:31,623 INFO L225 Difference]: With dead ends: 137700 [2021-11-07 13:03:31,623 INFO L226 Difference]: Without dead ends: 79670 [2021-11-07 13:03:31,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:03:31,691 INFO L933 BasicCegarLoop]: 2019 mSDtfsCounter, 829 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.30ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.71ms IncrementalHoareTripleChecker+Time [2021-11-07 13:03:31,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 3468 Invalid, 58 Unknown, 0 Unchecked, 3.30ms Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 43.71ms Time] [2021-11-07 13:03:31,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79670 states. [2021-11-07 13:03:33,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79670 to 68528. [2021-11-07 13:03:33,865 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) [2021-11-07 13:03:33,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68528 states to 68528 states and 91438 transitions. [2021-11-07 13:03:33,964 INFO L78 Accepts]: Start accepts. Automaton has 68528 states and 91438 transitions. Word has length 74 [2021-11-07 13:03:33,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:03:33,965 INFO L470 AbstractCegarLoop]: Abstraction has 68528 states and 91438 transitions. [2021-11-07 13:03:33,965 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) [2021-11-07 13:03:33,965 INFO L276 IsEmpty]: Start isEmpty. Operand 68528 states and 91438 transitions. [2021-11-07 13:03:33,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-07 13:03:33,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:03:33,971 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] [2021-11-07 13:03:33,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 13:03:33,972 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:03:33,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:03:33,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2119199959, now seen corresponding path program 1 times [2021-11-07 13:03:33,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:03:33,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388781454] [2021-11-07 13:03:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:03:33,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:03:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:03:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 13:03:34,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:03:34,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388781454] [2021-11-07 13:03:34,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388781454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:03:34,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:03:34,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:03:34,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402422310] [2021-11-07 13:03:34,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:03:34,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:03:34,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:03:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:03:34,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:03:34,044 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) [2021-11-07 13:03:37,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:03:37,298 INFO L93 Difference]: Finished difference Result 181548 states and 243328 transitions. [2021-11-07 13:03:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:03:37,313 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 [2021-11-07 13:03:37,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:03:37,764 INFO L225 Difference]: With dead ends: 181548 [2021-11-07 13:03:37,765 INFO L226 Difference]: Without dead ends: 113038 [2021-11-07 13:03:37,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:03:37,849 INFO L933 BasicCegarLoop]: 2619 mSDtfsCounter, 1116 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 4158 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.12ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.24ms IncrementalHoareTripleChecker+Time [2021-11-07 13:03:37,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 4158 Invalid, 11 Unknown, 0 Unchecked, 3.12ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 17.24ms Time] [2021-11-07 13:03:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113038 states.