./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.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_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.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 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 18:37:11,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 18:37:11,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 18:37:11,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 18:37:11,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 18:37:11,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 18:37:11,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 18:37:11,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 18:37:11,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 18:37:11,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 18:37:11,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 18:37:11,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 18:37:11,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 18:37:11,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 18:37:11,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 18:37:11,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 18:37:11,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 18:37:11,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 18:37:11,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 18:37:11,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 18:37:11,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 18:37:11,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 18:37:11,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 18:37:11,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 18:37:11,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 18:37:11,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 18:37:11,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 18:37:11,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 18:37:11,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 18:37:11,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 18:37:11,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 18:37:11,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 18:37:11,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 18:37:11,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 18:37:11,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 18:37:11,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 18:37:11,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 18:37:11,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 18:37:11,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 18:37:11,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 18:37:11,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 18:37:11,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 18:37:11,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 18:37:11,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 18:37:11,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 18:37:11,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 18:37:11,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 18:37:11,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 18:37:11,362 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 18:37:11,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 18:37:11,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 18:37:11,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 18:37:11,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 18:37:11,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 18:37:11,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 18:37:11,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 18:37:11,364 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 18:37:11,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 18:37:11,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 18:37:11,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 18:37:11,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 18:37:11,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:37:11,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 18:37:11,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 18:37:11,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 18:37:11,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 18:37:11,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 18:37:11,366 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 18:37:11,366 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 18:37:11,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 18:37:11,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 18:37:11,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e [2021-11-02 18:37:11,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 18:37:11,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 18:37:11,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 18:37:11,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 18:37:11,583 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 18:37:11,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-02 18:37:11,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72fb76d54/85ea1fe491bd4cd888e7b25a1fffaf24/FLAGf15f2b460 [2021-11-02 18:37:12,237 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 18:37:12,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-02 18:37:12,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72fb76d54/85ea1fe491bd4cd888e7b25a1fffaf24/FLAGf15f2b460 [2021-11-02 18:37:12,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72fb76d54/85ea1fe491bd4cd888e7b25a1fffaf24 [2021-11-02 18:37:12,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 18:37:12,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 18:37:12,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 18:37:12,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 18:37:12,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 18:37:12,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:37:12" (1/1) ... [2021-11-02 18:37:12,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5949061f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:37:12, skipping insertion in model container [2021-11-02 18:37:12,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:37:12" (1/1) ... [2021-11-02 18:37:12,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 18:37:12,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 18:37:13,319 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_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-02 18:37:13,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:37:13,773 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 18:37:13,888 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_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-02 18:37:14,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:37:14,095 INFO L208 MainTranslator]: Completed translation [2021-11-02 18:37:14,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:37:14 WrapperNode [2021-11-02 18:37:14,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 18:37:14,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 18:37:14,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 18:37:14,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 18:37:14,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:37:14" (1/1) ... [2021-11-02 18:37:14,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:37:14" (1/1) ... [2021-11-02 18:37:14,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 18:37:14,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 18:37:14,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 18:37:14,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 18:37:14,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:37:14" (1/1) ... [2021-11-02 18:37:14,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:37:14" (1/1) ... [2021-11-02 18:37:14,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:37:14" (1/1) ... [2021-11-02 18:37:14,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:37:14" (1/1) ... [2021-11-02 18:37:15,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:37:14" (1/1) ... [2021-11-02 18:37:15,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:37:14" (1/1) ... [2021-11-02 18:37:15,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:37:14" (1/1) ... [2021-11-02 18:37:15,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 18:37:15,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 18:37:15,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 18:37:15,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 18:37:15,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:37:14" (1/1) ... [2021-11-02 18:37:15,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:37:15,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:37:15,441 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 18:37:15,507 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 18:37:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 18:37:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 18:37:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 18:37:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 18:37:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 18:37:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 18:37:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 18:37:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 18:37:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 18:37:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 18:37:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 18:37:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 18:37:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 18:37:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 18:37:15,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 18:37:18,165 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 18:37:18,165 INFO L299 CfgBuilder]: Removed 3847 assume(true) statements. [2021-11-02 18:37:18,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:37:18 BoogieIcfgContainer [2021-11-02 18:37:18,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 18:37:18,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 18:37:18,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 18:37:18,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 18:37:18,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 06:37:12" (1/3) ... [2021-11-02 18:37:18,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50407a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:37:18, skipping insertion in model container [2021-11-02 18:37:18,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:37:14" (2/3) ... [2021-11-02 18:37:18,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50407a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:37:18, skipping insertion in model container [2021-11-02 18:37:18,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:37:18" (3/3) ... [2021-11-02 18:37:18,179 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-02 18:37:18,183 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 18:37:18,184 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 18:37:18,232 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 18:37:18,236 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 18:37:18,237 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 18:37:18,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 4667 states, 4665 states have (on average 1.4655948553054663) internal successors, (6837), 4666 states have internal predecessors, (6837), 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 18:37:18,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 18:37:18,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:37:18,299 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] [2021-11-02 18:37:18,299 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:37:18,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:37:18,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1642635718, now seen corresponding path program 1 times [2021-11-02 18:37:18,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:37:18,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954029893] [2021-11-02 18:37:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:37:18,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:37:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:37:18,624 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 18:37:18,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:37:18,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954029893] [2021-11-02 18:37:18,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954029893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:37:18,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:37:18,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:37:18,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601742517] [2021-11-02 18:37:18,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:37:18,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:37:18,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:37:18,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:37:18,654 INFO L87 Difference]: Start difference. First operand has 4667 states, 4665 states have (on average 1.4655948553054663) internal successors, (6837), 4666 states have internal predecessors, (6837), 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 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 18:37:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:37:33,217 INFO L93 Difference]: Finished difference Result 13949 states and 20444 transitions. [2021-11-02 18:37:33,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:37:33,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2021-11-02 18:37:33,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:37:33,282 INFO L225 Difference]: With dead ends: 13949 [2021-11-02 18:37:33,283 INFO L226 Difference]: Without dead ends: 9275 [2021-11-02 18:37:33,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:37:33,308 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 6502 mSDsluCounter, 6547 mSDsCounter, 0 mSdLazyCounter, 13109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11712.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6502 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.84ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14005.49ms IncrementalHoareTripleChecker+Time [2021-11-02 18:37:33,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6502 Valid, 8 Invalid, 13112 Unknown, 0 Unchecked, 30.84ms Time], IncrementalHoareTripleChecker [3 Valid, 13109 Invalid, 0 Unknown, 0 Unchecked, 14005.49ms Time] [2021-11-02 18:37:33,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9275 states. [2021-11-02 18:37:33,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9275 to 9275. [2021-11-02 18:37:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9275 states, 9274 states have (on average 1.4067284882467113) internal successors, (13046), 9274 states have internal predecessors, (13046), 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 18:37:33,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9275 states to 9275 states and 13046 transitions. [2021-11-02 18:37:33,573 INFO L78 Accepts]: Start accepts. Automaton has 9275 states and 13046 transitions. Word has length 22 [2021-11-02 18:37:33,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:37:33,574 INFO L470 AbstractCegarLoop]: Abstraction has 9275 states and 13046 transitions. [2021-11-02 18:37:33,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 18:37:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 9275 states and 13046 transitions. [2021-11-02 18:37:33,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-02 18:37:33,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:37:33,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 18:37:33,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 18:37:33,585 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:37:33,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:37:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash -899430506, now seen corresponding path program 1 times [2021-11-02 18:37:33,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:37:33,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245308517] [2021-11-02 18:37:33,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:37:33,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:37:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:37:33,696 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 18:37:33,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:37:33,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245308517] [2021-11-02 18:37:33,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245308517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:37:33,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:37:33,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:37:33,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269439618] [2021-11-02 18:37:33,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:37:33,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:37:33,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:37:33,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:37:33,702 INFO L87 Difference]: Start difference. First operand 9275 states and 13046 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 18:37:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:37:52,905 INFO L93 Difference]: Finished difference Result 18526 states and 26063 transitions. [2021-11-02 18:37:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 18:37:52,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2021-11-02 18:37:52,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:37:52,932 INFO L225 Difference]: With dead ends: 18526 [2021-11-02 18:37:52,933 INFO L226 Difference]: Without dead ends: 9274 [2021-11-02 18:37:52,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.95ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:37:52,944 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13062 mSDsluCounter, 6521 mSDsCounter, 0 mSdLazyCounter, 19565 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15663.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13062 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.92ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18631.74ms IncrementalHoareTripleChecker+Time [2021-11-02 18:37:52,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13062 Valid, 0 Invalid, 19568 Unknown, 0 Unchecked, 47.92ms Time], IncrementalHoareTripleChecker [3 Valid, 19565 Invalid, 0 Unknown, 0 Unchecked, 18631.74ms Time] [2021-11-02 18:37:52,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9274 states. [2021-11-02 18:37:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9274 to 9274. [2021-11-02 18:37:53,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9274 states, 9273 states have (on average 1.4064488299363744) internal successors, (13042), 9273 states have internal predecessors, (13042), 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 18:37:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9274 states to 9274 states and 13042 transitions. [2021-11-02 18:37:53,139 INFO L78 Accepts]: Start accepts. Automaton has 9274 states and 13042 transitions. Word has length 26 [2021-11-02 18:37:53,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:37:53,139 INFO L470 AbstractCegarLoop]: Abstraction has 9274 states and 13042 transitions. [2021-11-02 18:37:53,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 18:37:53,140 INFO L276 IsEmpty]: Start isEmpty. Operand 9274 states and 13042 transitions. [2021-11-02 18:37:53,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 18:37:53,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:37:53,143 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:37:53,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 18:37:53,145 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:37:53,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:37:53,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1619061827, now seen corresponding path program 1 times [2021-11-02 18:37:53,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:37:53,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714429072] [2021-11-02 18:37:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:37:53,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:37:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:37:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 18:37:53,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:37:53,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714429072] [2021-11-02 18:37:53,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714429072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:37:53,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:37:53,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:37:53,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760250581] [2021-11-02 18:37:53,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:37:53,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:37:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:37:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:37:53,269 INFO L87 Difference]: Start difference. First operand 9274 states and 13042 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 18:38:18,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:38:18,784 INFO L93 Difference]: Finished difference Result 27774 states and 39071 transitions. [2021-11-02 18:38:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:38:18,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 38 [2021-11-02 18:38:18,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:38:18,826 INFO L225 Difference]: With dead ends: 27774 [2021-11-02 18:38:18,826 INFO L226 Difference]: Without dead ends: 18519 [2021-11-02 18:38:18,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.10ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:38:18,844 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6482 mSDsluCounter, 19110 mSDsCounter, 0 mSdLazyCounter, 26179 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21415.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6482 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.30ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24956.82ms IncrementalHoareTripleChecker+Time [2021-11-02 18:38:18,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6482 Valid, 0 Invalid, 26186 Unknown, 0 Unchecked, 45.30ms Time], IncrementalHoareTripleChecker [7 Valid, 26179 Invalid, 0 Unknown, 0 Unchecked, 24956.82ms Time] [2021-11-02 18:38:18,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18519 states. [2021-11-02 18:38:19,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18519 to 18279. [2021-11-02 18:38:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18279 states, 18278 states have (on average 1.4081956450377504) internal successors, (25739), 18278 states have internal predecessors, (25739), 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 18:38:19,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18279 states to 18279 states and 25739 transitions. [2021-11-02 18:38:19,226 INFO L78 Accepts]: Start accepts. Automaton has 18279 states and 25739 transitions. Word has length 38 [2021-11-02 18:38:19,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:38:19,227 INFO L470 AbstractCegarLoop]: Abstraction has 18279 states and 25739 transitions. [2021-11-02 18:38:19,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 18:38:19,228 INFO L276 IsEmpty]: Start isEmpty. Operand 18279 states and 25739 transitions. [2021-11-02 18:38:19,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 18:38:19,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:38:19,236 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-02 18:38:19,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 18:38:19,237 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:38:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:38:19,237 INFO L85 PathProgramCache]: Analyzing trace with hash -770183526, now seen corresponding path program 1 times [2021-11-02 18:38:19,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:38:19,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318586328] [2021-11-02 18:38:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:38:19,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:38:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:38:19,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 18:38:19,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:38:19,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318586328] [2021-11-02 18:38:19,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318586328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:38:19,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:38:19,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:38:19,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504483705] [2021-11-02 18:38:19,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:38:19,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:38:19,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:38:19,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:38:19,315 INFO L87 Difference]: Start difference. First operand 18279 states and 25739 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:38:35,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:38:35,082 INFO L93 Difference]: Finished difference Result 44717 states and 62949 transitions. [2021-11-02 18:38:35,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:38:35,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-02 18:38:35,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:38:35,148 INFO L225 Difference]: With dead ends: 44717 [2021-11-02 18:38:35,148 INFO L226 Difference]: Without dead ends: 26461 [2021-11-02 18:38:35,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:38:35,177 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6183 mSDsluCounter, 6487 mSDsCounter, 0 mSdLazyCounter, 13080 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12597.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6183 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.56ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15215.39ms IncrementalHoareTripleChecker+Time [2021-11-02 18:38:35,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6183 Valid, 0 Invalid, 13082 Unknown, 0 Unchecked, 16.56ms Time], IncrementalHoareTripleChecker [2 Valid, 13080 Invalid, 0 Unknown, 0 Unchecked, 15215.39ms Time] [2021-11-02 18:38:35,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26461 states. [2021-11-02 18:38:35,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26461 to 26437. [2021-11-02 18:38:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26437 states, 26436 states have (on average 1.4074746557724316) internal successors, (37208), 26436 states have internal predecessors, (37208), 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 18:38:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26437 states to 26437 states and 37208 transitions. [2021-11-02 18:38:35,839 INFO L78 Accepts]: Start accepts. Automaton has 26437 states and 37208 transitions. Word has length 59 [2021-11-02 18:38:35,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:38:35,839 INFO L470 AbstractCegarLoop]: Abstraction has 26437 states and 37208 transitions. [2021-11-02 18:38:35,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:38:35,840 INFO L276 IsEmpty]: Start isEmpty. Operand 26437 states and 37208 transitions. [2021-11-02 18:38:35,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 18:38:35,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:38:35,850 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-02 18:38:35,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 18:38:35,850 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:38:35,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:38:35,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1015760832, now seen corresponding path program 2 times [2021-11-02 18:38:35,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:38:35,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416349506] [2021-11-02 18:38:35,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:38:35,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:38:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:38:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:38:35,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:38:35,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416349506] [2021-11-02 18:38:35,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416349506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:38:35,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:38:35,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:38:35,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193342799] [2021-11-02 18:38:35,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:38:35,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:38:35,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:38:35,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:38:35,943 INFO L87 Difference]: Start difference. First operand 26437 states and 37208 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 18:38:59,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:38:59,439 INFO L93 Difference]: Finished difference Result 52913 states and 74493 transitions. [2021-11-02 18:38:59,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:38:59,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-02 18:38:59,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:38:59,498 INFO L225 Difference]: With dead ends: 52913 [2021-11-02 18:38:59,498 INFO L226 Difference]: Without dead ends: 35133 [2021-11-02 18:38:59,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:38:59,529 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6217 mSDsluCounter, 6470 mSDsCounter, 0 mSdLazyCounter, 19207 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18881.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.89ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 19207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22644.50ms IncrementalHoareTripleChecker+Time [2021-11-02 18:38:59,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6217 Valid, 0 Invalid, 19221 Unknown, 0 Unchecked, 25.89ms Time], IncrementalHoareTripleChecker [14 Valid, 19207 Invalid, 0 Unknown, 0 Unchecked, 22644.50ms Time] [2021-11-02 18:38:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35133 states. [2021-11-02 18:39:00,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35133 to 35109. [2021-11-02 18:39:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35109 states, 35108 states have (on average 1.4074854733963769) internal successors, (49414), 35108 states have internal predecessors, (49414), 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 18:39:00,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35109 states to 35109 states and 49414 transitions. [2021-11-02 18:39:00,113 INFO L78 Accepts]: Start accepts. Automaton has 35109 states and 49414 transitions. Word has length 59 [2021-11-02 18:39:00,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:39:00,114 INFO L470 AbstractCegarLoop]: Abstraction has 35109 states and 49414 transitions. [2021-11-02 18:39:00,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 18:39:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 35109 states and 49414 transitions. [2021-11-02 18:39:00,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 18:39:00,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:39:00,128 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 18:39:00,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 18:39:00,128 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:39:00,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:39:00,129 INFO L85 PathProgramCache]: Analyzing trace with hash -591221986, now seen corresponding path program 1 times [2021-11-02 18:39:00,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:39:00,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430092368] [2021-11-02 18:39:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:39:00,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:39:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:39:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 18:39:00,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:39:00,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430092368] [2021-11-02 18:39:00,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430092368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:39:00,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:39:00,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:39:00,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799438592] [2021-11-02 18:39:00,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:39:00,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:39:00,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:39:00,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:39:00,219 INFO L87 Difference]: Start difference. First operand 35109 states and 49414 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 18:39:24,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:39:24,005 INFO L93 Difference]: Finished difference Result 70257 states and 98905 transitions. [2021-11-02 18:39:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:39:24,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 73 [2021-11-02 18:39:24,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:39:24,085 INFO L225 Difference]: With dead ends: 70257 [2021-11-02 18:39:24,086 INFO L226 Difference]: Without dead ends: 43805 [2021-11-02 18:39:24,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:39:24,129 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6264 mSDsluCounter, 6426 mSDsCounter, 0 mSdLazyCounter, 19184 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19056.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6264 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.20ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 19184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22867.39ms IncrementalHoareTripleChecker+Time [2021-11-02 18:39:24,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6264 Valid, 0 Invalid, 19201 Unknown, 0 Unchecked, 23.20ms Time], IncrementalHoareTripleChecker [17 Valid, 19184 Invalid, 0 Unknown, 0 Unchecked, 22867.39ms Time] [2021-11-02 18:39:24,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43805 states. [2021-11-02 18:39:24,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43805 to 43781. [2021-11-02 18:39:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43781 states, 43780 states have (on average 1.4074920054819553) internal successors, (61620), 43780 states have internal predecessors, (61620), 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 18:39:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43781 states to 43781 states and 61620 transitions. [2021-11-02 18:39:24,979 INFO L78 Accepts]: Start accepts. Automaton has 43781 states and 61620 transitions. Word has length 73 [2021-11-02 18:39:24,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:39:24,980 INFO L470 AbstractCegarLoop]: Abstraction has 43781 states and 61620 transitions. [2021-11-02 18:39:24,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 18:39:24,980 INFO L276 IsEmpty]: Start isEmpty. Operand 43781 states and 61620 transitions. [2021-11-02 18:39:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 18:39:24,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:39:24,998 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-02 18:39:24,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 18:39:24,998 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:39:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:39:24,999 INFO L85 PathProgramCache]: Analyzing trace with hash 638916036, now seen corresponding path program 1 times [2021-11-02 18:39:24,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:39:24,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930062222] [2021-11-02 18:39:24,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:39:24,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:39:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:39:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-02 18:39:25,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:39:25,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930062222] [2021-11-02 18:39:25,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930062222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:39:25,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:39:25,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:39:25,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982116779] [2021-11-02 18:39:25,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:39:25,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:39:25,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:39:25,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:39:25,065 INFO L87 Difference]: Start difference. First operand 43781 states and 61620 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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 18:39:56,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:39:56,385 INFO L93 Difference]: Finished difference Result 96467 states and 135773 transitions. [2021-11-02 18:39:56,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:39:56,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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 86 [2021-11-02 18:39:56,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:39:56,494 INFO L225 Difference]: With dead ends: 96467 [2021-11-02 18:39:56,494 INFO L226 Difference]: Without dead ends: 61343 [2021-11-02 18:39:56,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.05ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:39:56,550 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12603 mSDsluCounter, 13135 mSDsCounter, 0 mSdLazyCounter, 26020 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24487.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12603 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29913.15ms IncrementalHoareTripleChecker+Time [2021-11-02 18:39:56,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12603 Valid, 0 Invalid, 26020 Unknown, 0 Unchecked, 63.72ms Time], IncrementalHoareTripleChecker [0 Valid, 26020 Invalid, 0 Unknown, 0 Unchecked, 29913.15ms Time] [2021-11-02 18:39:56,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61343 states. [2021-11-02 18:39:57,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61343 to 43785. [2021-11-02 18:39:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43785 states, 43784 states have (on average 1.4074547780010962) internal successors, (61624), 43784 states have internal predecessors, (61624), 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 18:39:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43785 states to 43785 states and 61624 transitions. [2021-11-02 18:39:57,519 INFO L78 Accepts]: Start accepts. Automaton has 43785 states and 61624 transitions. Word has length 86 [2021-11-02 18:39:57,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:39:57,520 INFO L470 AbstractCegarLoop]: Abstraction has 43785 states and 61624 transitions. [2021-11-02 18:39:57,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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 18:39:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 43785 states and 61624 transitions. [2021-11-02 18:39:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 18:39:57,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:39:57,536 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-02 18:39:57,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 18:39:57,536 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:39:57,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:39:57,537 INFO L85 PathProgramCache]: Analyzing trace with hash -280928408, now seen corresponding path program 1 times [2021-11-02 18:39:57,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:39:57,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228155406] [2021-11-02 18:39:57,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:39:57,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:39:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:39:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-02 18:39:57,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:39:57,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228155406] [2021-11-02 18:39:57,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228155406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:39:57,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:39:57,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:39:57,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999447526] [2021-11-02 18:39:57,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:39:57,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:39:57,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:39:57,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:39:57,594 INFO L87 Difference]: Start difference. First operand 43785 states and 61624 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 18:40:24,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:40:24,247 INFO L93 Difference]: Finished difference Result 107888 states and 151875 transitions. [2021-11-02 18:40:24,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:40:24,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 88 [2021-11-02 18:40:24,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:40:24,402 INFO L225 Difference]: With dead ends: 107888 [2021-11-02 18:40:24,403 INFO L226 Difference]: Without dead ends: 85728 [2021-11-02 18:40:24,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:40:24,453 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6278 mSDsluCounter, 6277 mSDsCounter, 0 mSdLazyCounter, 18978 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20563.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6278 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.07ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 18978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25242.94ms IncrementalHoareTripleChecker+Time [2021-11-02 18:40:24,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6278 Valid, 0 Invalid, 19066 Unknown, 0 Unchecked, 26.07ms Time], IncrementalHoareTripleChecker [88 Valid, 18978 Invalid, 0 Unknown, 0 Unchecked, 25242.94ms Time] [2021-11-02 18:40:24,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85728 states. [2021-11-02 18:40:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85728 to 44061. [2021-11-02 18:40:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44061 states, 44060 states have (on average 1.4049024058102588) internal successors, (61900), 44060 states have internal predecessors, (61900), 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 18:40:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44061 states to 44061 states and 61900 transitions. [2021-11-02 18:40:25,572 INFO L78 Accepts]: Start accepts. Automaton has 44061 states and 61900 transitions. Word has length 88 [2021-11-02 18:40:25,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:40:25,572 INFO L470 AbstractCegarLoop]: Abstraction has 44061 states and 61900 transitions. [2021-11-02 18:40:25,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 18:40:25,572 INFO L276 IsEmpty]: Start isEmpty. Operand 44061 states and 61900 transitions. [2021-11-02 18:40:25,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 18:40:25,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:40:25,589 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-02 18:40:25,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 18:40:25,590 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:40:25,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:40:25,590 INFO L85 PathProgramCache]: Analyzing trace with hash -284281593, now seen corresponding path program 1 times [2021-11-02 18:40:25,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:40:25,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643352923] [2021-11-02 18:40:25,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:40:25,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:40:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:40:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-02 18:40:25,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:40:25,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643352923] [2021-11-02 18:40:25,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643352923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:40:25,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:40:25,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:40:25,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054487818] [2021-11-02 18:40:25,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:40:25,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:40:25,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:40:25,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:40:25,715 INFO L87 Difference]: Start difference. First operand 44061 states and 61900 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 18:41:08,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:41:08,336 INFO L93 Difference]: Finished difference Result 108434 states and 152250 transitions. [2021-11-02 18:41:08,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 18:41:08,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 90 [2021-11-02 18:41:08,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:41:08,441 INFO L225 Difference]: With dead ends: 108434 [2021-11-02 18:41:08,441 INFO L226 Difference]: Without dead ends: 64396 [2021-11-02 18:41:08,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.18ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:41:08,479 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12360 mSDsluCounter, 12405 mSDsCounter, 0 mSdLazyCounter, 25235 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33326.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12360 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 25294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.66ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 25235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40708.57ms IncrementalHoareTripleChecker+Time [2021-11-02 18:41:08,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12360 Valid, 0 Invalid, 25294 Unknown, 0 Unchecked, 48.66ms Time], IncrementalHoareTripleChecker [59 Valid, 25235 Invalid, 0 Unknown, 0 Unchecked, 40708.57ms Time] [2021-11-02 18:41:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64396 states. [2021-11-02 18:41:09,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64396 to 43647. [2021-11-02 18:41:09,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43647 states, 43646 states have (on average 1.3992576639325482) internal successors, (61072), 43646 states have internal predecessors, (61072), 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 18:41:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43647 states to 43647 states and 61072 transitions. [2021-11-02 18:41:09,588 INFO L78 Accepts]: Start accepts. Automaton has 43647 states and 61072 transitions. Word has length 90 [2021-11-02 18:41:09,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:41:09,588 INFO L470 AbstractCegarLoop]: Abstraction has 43647 states and 61072 transitions. [2021-11-02 18:41:09,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 18:41:09,588 INFO L276 IsEmpty]: Start isEmpty. Operand 43647 states and 61072 transitions. [2021-11-02 18:41:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 18:41:09,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:41:09,602 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 18:41:09,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 18:41:09,603 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:41:09,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:41:09,603 INFO L85 PathProgramCache]: Analyzing trace with hash 298726998, now seen corresponding path program 1 times [2021-11-02 18:41:09,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:41:09,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324922624] [2021-11-02 18:41:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:41:09,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:41:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:41:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 18:41:09,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:41:09,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324922624] [2021-11-02 18:41:09,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324922624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:41:09,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:41:09,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:41:09,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081772172] [2021-11-02 18:41:09,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:41:09,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:41:09,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:41:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:41:09,669 INFO L87 Difference]: Start difference. First operand 43647 states and 61072 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 18:41:39,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:41:39,613 INFO L93 Difference]: Finished difference Result 127145 states and 178332 transitions. [2021-11-02 18:41:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:41:39,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 90 [2021-11-02 18:41:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:41:39,744 INFO L225 Difference]: With dead ends: 127145 [2021-11-02 18:41:39,744 INFO L226 Difference]: Without dead ends: 83521 [2021-11-02 18:41:39,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:41:39,805 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5966 mSDsluCounter, 6439 mSDsCounter, 0 mSdLazyCounter, 17529 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22452.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5966 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.61ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 17529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28115.34ms IncrementalHoareTripleChecker+Time [2021-11-02 18:41:39,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5966 Valid, 0 Invalid, 17575 Unknown, 0 Unchecked, 28.61ms Time], IncrementalHoareTripleChecker [46 Valid, 17529 Invalid, 0 Unknown, 0 Unchecked, 28115.34ms Time] [2021-11-02 18:41:39,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83521 states. [2021-11-02 18:41:41,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83521 to 53877. [2021-11-02 18:41:41,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53877 states, 53876 states have (on average 1.394164377459351) internal successors, (75112), 53876 states have internal predecessors, (75112), 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 18:41:41,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53877 states to 53877 states and 75112 transitions. [2021-11-02 18:41:41,339 INFO L78 Accepts]: Start accepts. Automaton has 53877 states and 75112 transitions. Word has length 90 [2021-11-02 18:41:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:41:41,339 INFO L470 AbstractCegarLoop]: Abstraction has 53877 states and 75112 transitions. [2021-11-02 18:41:41,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 18:41:41,339 INFO L276 IsEmpty]: Start isEmpty. Operand 53877 states and 75112 transitions. [2021-11-02 18:41:41,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 18:41:41,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:41:41,353 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 18:41:41,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 18:41:41,353 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:41:41,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:41:41,353 INFO L85 PathProgramCache]: Analyzing trace with hash -545278504, now seen corresponding path program 1 times [2021-11-02 18:41:41,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:41:41,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170629112] [2021-11-02 18:41:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:41:41,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:41:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:41:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 18:41:41,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:41:41,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170629112] [2021-11-02 18:41:41,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170629112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:41:41,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:41:41,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:41:41,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393303273] [2021-11-02 18:41:41,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:41:41,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:41:41,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:41:41,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:41:41,442 INFO L87 Difference]: Start difference. First operand 53877 states and 75112 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 18:42:32,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:42:32,759 INFO L93 Difference]: Finished difference Result 240322 states and 335555 transitions. [2021-11-02 18:42:32,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:42:32,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 90 [2021-11-02 18:42:32,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:42:33,057 INFO L225 Difference]: With dead ends: 240322 [2021-11-02 18:42:33,058 INFO L226 Difference]: Without dead ends: 186468 [2021-11-02 18:42:33,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.44ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:42:33,128 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19234 mSDsluCounter, 17923 mSDsCounter, 0 mSdLazyCounter, 29475 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38859.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19234 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.96ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 29475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47120.74ms IncrementalHoareTripleChecker+Time [2021-11-02 18:42:33,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19234 Valid, 0 Invalid, 29502 Unknown, 0 Unchecked, 63.96ms Time], IncrementalHoareTripleChecker [27 Valid, 29475 Invalid, 0 Unknown, 0 Unchecked, 47120.74ms Time] [2021-11-02 18:42:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186468 states. [2021-11-02 18:42:35,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186468 to 54117. [2021-11-02 18:42:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54117 states, 54116 states have (on average 1.3924162909305935) internal successors, (75352), 54116 states have internal predecessors, (75352), 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 18:42:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54117 states to 54117 states and 75352 transitions. [2021-11-02 18:42:35,866 INFO L78 Accepts]: Start accepts. Automaton has 54117 states and 75352 transitions. Word has length 90 [2021-11-02 18:42:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:42:35,866 INFO L470 AbstractCegarLoop]: Abstraction has 54117 states and 75352 transitions. [2021-11-02 18:42:35,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 18:42:35,866 INFO L276 IsEmpty]: Start isEmpty. Operand 54117 states and 75352 transitions. [2021-11-02 18:42:35,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-02 18:42:35,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:42:35,882 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 18:42:35,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 18:42:35,882 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:42:35,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:42:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash 735356708, now seen corresponding path program 1 times [2021-11-02 18:42:35,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:42:35,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134651355] [2021-11-02 18:42:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:42:35,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:42:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:42:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 18:42:36,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:42:36,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134651355] [2021-11-02 18:42:36,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134651355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:42:36,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:42:36,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 18:42:36,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013284819] [2021-11-02 18:42:36,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 18:42:36,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:42:36,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 18:42:36,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 18:42:36,915 INFO L87 Difference]: Start difference. First operand 54117 states and 75352 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 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 18:48:28,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:48:28,881 INFO L93 Difference]: Finished difference Result 212749 states and 297246 transitions. [2021-11-02 18:48:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 18:48:28,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 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 93 [2021-11-02 18:48:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:48:29,164 INFO L225 Difference]: With dead ends: 212749 [2021-11-02 18:48:29,164 INFO L226 Difference]: Without dead ends: 158655 [2021-11-02 18:48:29,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 844.89ms TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-11-02 18:48:29,237 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 53019 mSDsluCounter, 93199 mSDsCounter, 0 mSdLazyCounter, 111202 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 234156.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53019 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 111313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 467.08ms SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 111202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 342465.93ms IncrementalHoareTripleChecker+Time [2021-11-02 18:48:29,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53019 Valid, 0 Invalid, 111313 Unknown, 0 Unchecked, 467.08ms Time], IncrementalHoareTripleChecker [111 Valid, 111202 Invalid, 0 Unknown, 0 Unchecked, 342465.93ms Time] [2021-11-02 18:48:29,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158655 states. [2021-11-02 18:48:32,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158655 to 54477. [2021-11-02 18:48:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54477 states, 54476 states have (on average 1.387620236434393) internal successors, (75592), 54476 states have internal predecessors, (75592), 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 18:48:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54477 states to 54477 states and 75592 transitions. [2021-11-02 18:48:32,993 INFO L78 Accepts]: Start accepts. Automaton has 54477 states and 75592 transitions. Word has length 93 [2021-11-02 18:48:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:48:32,993 INFO L470 AbstractCegarLoop]: Abstraction has 54477 states and 75592 transitions. [2021-11-02 18:48:32,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 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 18:48:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 54477 states and 75592 transitions. [2021-11-02 18:48:33,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-02 18:48:33,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:48:33,021 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 18:48:33,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 18:48:33,021 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:48:33,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:48:33,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1204284911, now seen corresponding path program 1 times [2021-11-02 18:48:33,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:48:33,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281191583] [2021-11-02 18:48:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:48:33,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:48:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:48:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 18:48:33,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:48:33,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281191583] [2021-11-02 18:48:33,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281191583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:48:33,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:48:33,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:48:33,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253184032] [2021-11-02 18:48:33,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:48:33,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:48:33,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:48:33,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:48:33,130 INFO L87 Difference]: Start difference. First operand 54477 states and 75592 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 18:49:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:49:34,670 INFO L93 Difference]: Finished difference Result 148805 states and 206892 transitions. [2021-11-02 18:49:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:49:34,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 125 [2021-11-02 18:49:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:49:34,832 INFO L225 Difference]: With dead ends: 148805 [2021-11-02 18:49:34,832 INFO L226 Difference]: Without dead ends: 94351 [2021-11-02 18:49:34,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.13ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 18:49:34,897 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5928 mSDsluCounter, 31108 mSDsCounter, 0 mSdLazyCounter, 43603 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43366.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5928 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.05ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 43603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55651.96ms IncrementalHoareTripleChecker+Time [2021-11-02 18:49:34,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5928 Valid, 0 Invalid, 43635 Unknown, 0 Unchecked, 75.05ms Time], IncrementalHoareTripleChecker [32 Valid, 43603 Invalid, 0 Unknown, 0 Unchecked, 55651.96ms Time] [2021-11-02 18:49:34,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94351 states. [2021-11-02 18:49:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94351 to 55797. [2021-11-02 18:49:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55797 states, 55796 states have (on average 1.3832891246684351) internal successors, (77182), 55796 states have internal predecessors, (77182), 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 18:49:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55797 states to 55797 states and 77182 transitions. [2021-11-02 18:49:38,383 INFO L78 Accepts]: Start accepts. Automaton has 55797 states and 77182 transitions. Word has length 125 [2021-11-02 18:49:38,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:49:38,383 INFO L470 AbstractCegarLoop]: Abstraction has 55797 states and 77182 transitions. [2021-11-02 18:49:38,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 18:49:38,383 INFO L276 IsEmpty]: Start isEmpty. Operand 55797 states and 77182 transitions. [2021-11-02 18:49:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-02 18:49:38,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:49:38,414 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 18:49:38,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 18:49:38,414 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:49:38,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:49:38,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1008133905, now seen corresponding path program 1 times [2021-11-02 18:49:38,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:49:38,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125391379] [2021-11-02 18:49:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:49:38,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:49:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:49:38,506 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 18:49:38,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:49:38,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125391379] [2021-11-02 18:49:38,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125391379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:49:38,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:49:38,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:49:38,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535569398] [2021-11-02 18:49:38,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:49:38,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:49:38,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:49:38,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:49:38,508 INFO L87 Difference]: Start difference. First operand 55797 states and 77182 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 18:50:24,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:50:24,753 INFO L93 Difference]: Finished difference Result 146195 states and 203292 transitions. [2021-11-02 18:50:24,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:50:24,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 125 [2021-11-02 18:50:24,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:50:24,965 INFO L225 Difference]: With dead ends: 146195 [2021-11-02 18:50:24,965 INFO L226 Difference]: Without dead ends: 90421 [2021-11-02 18:50:25,066 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 18:50:25,067 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6433 mSDsluCounter, 5971 mSDsCounter, 0 mSdLazyCounter, 17068 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30210.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6433 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.09ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 17068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40343.16ms IncrementalHoareTripleChecker+Time [2021-11-02 18:50:25,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6433 Valid, 0 Invalid, 17084 Unknown, 0 Unchecked, 31.09ms Time], IncrementalHoareTripleChecker [16 Valid, 17068 Invalid, 0 Unknown, 0 Unchecked, 40343.16ms Time] [2021-11-02 18:50:25,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90421 states. [2021-11-02 18:50:28,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90421 to 55797. [2021-11-02 18:50:28,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55797 states, 55796 states have (on average 1.3822137787655029) internal successors, (77122), 55796 states have internal predecessors, (77122), 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 18:50:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55797 states to 55797 states and 77122 transitions. [2021-11-02 18:50:28,422 INFO L78 Accepts]: Start accepts. Automaton has 55797 states and 77122 transitions. Word has length 125 [2021-11-02 18:50:28,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:50:28,422 INFO L470 AbstractCegarLoop]: Abstraction has 55797 states and 77122 transitions. [2021-11-02 18:50:28,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 18:50:28,423 INFO L276 IsEmpty]: Start isEmpty. Operand 55797 states and 77122 transitions. [2021-11-02 18:50:28,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-02 18:50:28,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:50:28,449 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 18:50:28,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 18:50:28,449 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:50:28,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:50:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash 600856881, now seen corresponding path program 1 times [2021-11-02 18:50:28,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:50:28,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936203474] [2021-11-02 18:50:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:50:28,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:50:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:50:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 18:50:28,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:50:28,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936203474] [2021-11-02 18:50:28,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936203474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:50:28,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:50:28,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:50:28,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144370791] [2021-11-02 18:50:28,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:50:28,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:50:28,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:50:28,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:50:28,531 INFO L87 Difference]: Start difference. First operand 55797 states and 77122 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) Killed by 15