./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.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 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 15:52:42,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 15:52:42,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 15:52:42,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 15:52:42,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 15:52:42,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 15:52:42,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 15:52:42,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 15:52:42,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 15:52:42,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 15:52:42,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 15:52:42,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 15:52:42,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 15:52:42,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 15:52:42,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 15:52:42,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 15:52:42,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 15:52:42,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 15:52:42,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 15:52:42,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 15:52:42,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 15:52:42,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 15:52:42,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 15:52:42,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 15:52:42,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 15:52:42,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 15:52:42,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 15:52:42,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 15:52:42,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 15:52:42,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 15:52:42,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 15:52:42,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 15:52:42,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 15:52:42,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 15:52:42,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 15:52:42,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 15:52:42,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 15:52:42,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 15:52:42,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 15:52:42,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 15:52:42,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 15:52:42,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 15:52:42,488 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 15:52:42,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 15:52:42,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 15:52:42,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 15:52:42,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 15:52:42,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 15:52:42,490 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 15:52:42,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 15:52:42,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 15:52:42,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 15:52:42,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 15:52:42,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 15:52:42,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 15:52:42,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 15:52:42,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 15:52:42,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 15:52:42,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 15:52:42,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 15:52:42,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 15:52:42,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:52:42,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 15:52:42,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 15:52:42,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 15:52:42,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 15:52:42,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 15:52:42,493 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 15:52:42,494 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 15:52:42,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 15:52:42,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 15:52:42,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 [2021-11-07 15:52:42,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 15:52:42,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 15:52:42,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 15:52:42,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 15:52:42,707 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 15:52:42,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-07 15:52:42,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fe270546/30d2cd8b441f4001b6d8469d33095706/FLAG0212603f8 [2021-11-07 15:52:43,364 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 15:52:43,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-07 15:52:43,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fe270546/30d2cd8b441f4001b6d8469d33095706/FLAG0212603f8 [2021-11-07 15:52:43,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fe270546/30d2cd8b441f4001b6d8469d33095706 [2021-11-07 15:52:43,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 15:52:43,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 15:52:43,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 15:52:43,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 15:52:43,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 15:52:43,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:52:43" (1/1) ... [2021-11-07 15:52:43,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781c4851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:43, skipping insertion in model container [2021-11-07 15:52:43,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:52:43" (1/1) ... [2021-11-07 15:52:43,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 15:52:43,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 15:52:44,889 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-11-07 15:52:44,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:52:45,005 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 15:52:45,249 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-11-07 15:52:45,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:52:45,347 INFO L208 MainTranslator]: Completed translation [2021-11-07 15:52:45,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:45 WrapperNode [2021-11-07 15:52:45,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 15:52:45,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 15:52:45,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 15:52:45,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 15:52:45,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:45" (1/1) ... [2021-11-07 15:52:45,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:45" (1/1) ... [2021-11-07 15:52:45,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 15:52:45,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 15:52:45,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 15:52:45,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 15:52:45,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:45" (1/1) ... [2021-11-07 15:52:45,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:45" (1/1) ... [2021-11-07 15:52:45,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:45" (1/1) ... [2021-11-07 15:52:45,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:45" (1/1) ... [2021-11-07 15:52:45,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:45" (1/1) ... [2021-11-07 15:52:45,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:45" (1/1) ... [2021-11-07 15:52:46,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:45" (1/1) ... [2021-11-07 15:52:46,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 15:52:46,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 15:52:46,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 15:52:46,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 15:52:46,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:45" (1/1) ... [2021-11-07 15:52:46,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:52:46,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:52:46,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 15:52:46,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 15:52:46,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 15:52:46,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 15:52:46,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 15:52:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 15:52:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 15:52:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 15:52:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 15:52:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 15:52:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 15:52:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 15:52:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 15:52:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 15:52:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 15:52:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 15:52:46,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 15:52:50,984 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 15:52:50,984 INFO L299 CfgBuilder]: Removed 2282 assume(true) statements. [2021-11-07 15:52:50,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:52:50 BoogieIcfgContainer [2021-11-07 15:52:50,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 15:52:50,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 15:52:50,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 15:52:50,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 15:52:50,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:52:43" (1/3) ... [2021-11-07 15:52:50,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378b8876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:52:50, skipping insertion in model container [2021-11-07 15:52:50,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:45" (2/3) ... [2021-11-07 15:52:50,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378b8876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:52:50, skipping insertion in model container [2021-11-07 15:52:50,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:52:50" (3/3) ... [2021-11-07 15:52:50,993 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-07 15:52:50,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 15:52:50,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-07 15:52:51,042 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 15:52:51,050 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 15:52:51,051 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-07 15:52:51,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 2084 states, 2071 states have (on average 1.3650410429744084) internal successors, (2827), 2083 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:51,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 15:52:51,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:52:51,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:52:51,104 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 15:52:51,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:52:51,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1766303631, now seen corresponding path program 1 times [2021-11-07 15:52:51,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:52:51,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196668659] [2021-11-07 15:52:51,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:52:51,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:52:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:52:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:52:51,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:52:51,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196668659] [2021-11-07 15:52:51,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196668659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:52:51,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:52:51,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:52:51,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975036714] [2021-11-07 15:52:51,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:52:51,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 15:52:51,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:52:51,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 15:52:51,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:52:51,519 INFO L87 Difference]: Start difference. First operand has 2084 states, 2071 states have (on average 1.3650410429744084) internal successors, (2827), 2083 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 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) [2021-11-07 15:52:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:52:51,612 INFO L93 Difference]: Finished difference Result 4164 states and 5649 transitions. [2021-11-07 15:52:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 15:52:51,614 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 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 [2021-11-07 15:52:51,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:52:51,634 INFO L225 Difference]: With dead ends: 4164 [2021-11-07 15:52:51,634 INFO L226 Difference]: Without dead ends: 2025 [2021-11-07 15:52:51,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:52:51,650 INFO L933 BasicCegarLoop]: 2788 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 15:52:51,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2788 Invalid, 0 Unknown, 0 Unchecked, 9.94ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 15:52:51,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2021-11-07 15:52:51,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2025. [2021-11-07 15:52:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2025 states, 2013 states have (on average 1.3288623944361648) internal successors, (2675), 2024 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:51,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 2675 transitions. [2021-11-07 15:52:51,743 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 2675 transitions. Word has length 59 [2021-11-07 15:52:51,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:52:51,744 INFO L470 AbstractCegarLoop]: Abstraction has 2025 states and 2675 transitions. [2021-11-07 15:52:51,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 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) [2021-11-07 15:52:51,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 2675 transitions. [2021-11-07 15:52:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 15:52:51,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:52:51,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:52:51,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 15:52:51,753 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 15:52:51,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:52:51,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1863285317, now seen corresponding path program 1 times [2021-11-07 15:52:51,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:52:51,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99973889] [2021-11-07 15:52:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:52:51,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:52:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:52:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:52:52,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:52:52,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99973889] [2021-11-07 15:52:52,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99973889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:52:52,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:52:52,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:52:52,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659920913] [2021-11-07 15:52:52,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:52:52,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:52:52,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:52:52,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:52:52,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:52:52,011 INFO L87 Difference]: Start difference. First operand 2025 states and 2675 transitions. Second operand has 4 states, 4 states have (on average 14.75) 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) [2021-11-07 15:52:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:52:52,316 INFO L93 Difference]: Finished difference Result 7772 states and 10262 transitions. [2021-11-07 15:52:52,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:52:52,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) 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 [2021-11-07 15:52:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:52:52,336 INFO L225 Difference]: With dead ends: 7772 [2021-11-07 15:52:52,337 INFO L226 Difference]: Without dead ends: 5780 [2021-11-07 15:52:52,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:52:52,347 INFO L933 BasicCegarLoop]: 5222 mSDtfsCounter, 3686 mSDsluCounter, 5400 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3686 SdHoareTripleChecker+Valid, 10622 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.32ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.38ms IncrementalHoareTripleChecker+Time [2021-11-07 15:52:52,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3686 Valid, 10622 Invalid, 68 Unknown, 0 Unchecked, 16.32ms Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 88.38ms Time] [2021-11-07 15:52:52,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2021-11-07 15:52:52,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 3015. [2021-11-07 15:52:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 3003 states have (on average 1.3253413253413253) internal successors, (3980), 3014 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 3980 transitions. [2021-11-07 15:52:52,447 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 3980 transitions. Word has length 59 [2021-11-07 15:52:52,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:52:52,449 INFO L470 AbstractCegarLoop]: Abstraction has 3015 states and 3980 transitions. [2021-11-07 15:52:52,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) 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) [2021-11-07 15:52:52,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 3980 transitions. [2021-11-07 15:52:52,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 15:52:52,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:52:52,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:52:52,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 15:52:52,454 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 15:52:52,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:52:52,454 INFO L85 PathProgramCache]: Analyzing trace with hash -160932243, now seen corresponding path program 1 times [2021-11-07 15:52:52,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:52:52,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065147334] [2021-11-07 15:52:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:52:52,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:52:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:52:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:52:52,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:52:52,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065147334] [2021-11-07 15:52:52,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065147334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:52:52,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:52:52,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:52:52,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463116202] [2021-11-07 15:52:52,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:52:52,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:52:52,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:52:52,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:52:52,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:52:52,615 INFO L87 Difference]: Start difference. First operand 3015 states and 3980 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:52,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:52:52,861 INFO L93 Difference]: Finished difference Result 12722 states and 16789 transitions. [2021-11-07 15:52:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:52:52,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-07 15:52:52,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:52:52,892 INFO L225 Difference]: With dead ends: 12722 [2021-11-07 15:52:52,893 INFO L226 Difference]: Without dead ends: 9740 [2021-11-07 15:52:52,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.67ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:52:52,902 INFO L933 BasicCegarLoop]: 3972 mSDtfsCounter, 4943 mSDsluCounter, 5276 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4943 SdHoareTripleChecker+Valid, 9248 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.80ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.54ms IncrementalHoareTripleChecker+Time [2021-11-07 15:52:52,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4943 Valid, 9248 Invalid, 60 Unknown, 0 Unchecked, 13.80ms Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 47.54ms Time] [2021-11-07 15:52:52,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9740 states. [2021-11-07 15:52:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9740 to 5730. [2021-11-07 15:52:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5730 states, 5718 states have (on average 1.3256383350821965) internal successors, (7580), 5729 states have internal predecessors, (7580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 7580 transitions. [2021-11-07 15:52:53,121 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 7580 transitions. Word has length 60 [2021-11-07 15:52:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:52:53,122 INFO L470 AbstractCegarLoop]: Abstraction has 5730 states and 7580 transitions. [2021-11-07 15:52:53,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:53,122 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 7580 transitions. [2021-11-07 15:52:53,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 15:52:53,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:52:53,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:52:53,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 15:52:53,135 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 15:52:53,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:52:53,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1512833684, now seen corresponding path program 1 times [2021-11-07 15:52:53,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:52:53,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388664709] [2021-11-07 15:52:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:52:53,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:52:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:52:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:52:53,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:52:53,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388664709] [2021-11-07 15:52:53,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388664709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:52:53,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:52:53,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:52:53,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102933876] [2021-11-07 15:52:53,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:52:53,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:52:53,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:52:53,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:52:53,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:52:53,292 INFO L87 Difference]: Start difference. First operand 5730 states and 7580 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:52:53,743 INFO L93 Difference]: Finished difference Result 24596 states and 32496 transitions. [2021-11-07 15:52:53,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:52:53,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-07 15:52:53,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:52:53,799 INFO L225 Difference]: With dead ends: 24596 [2021-11-07 15:52:53,799 INFO L226 Difference]: Without dead ends: 18899 [2021-11-07 15:52:53,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:52:53,816 INFO L933 BasicCegarLoop]: 3971 mSDtfsCounter, 4949 mSDsluCounter, 5276 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 9247 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.83ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.23ms IncrementalHoareTripleChecker+Time [2021-11-07 15:52:53,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 9247 Invalid, 60 Unknown, 0 Unchecked, 14.83ms Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 48.23ms Time] [2021-11-07 15:52:53,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18899 states. [2021-11-07 15:52:54,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18899 to 10920. [2021-11-07 15:52:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10920 states, 10908 states have (on average 1.325082508250825) internal successors, (14454), 10919 states have internal predecessors, (14454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10920 states to 10920 states and 14454 transitions. [2021-11-07 15:52:54,179 INFO L78 Accepts]: Start accepts. Automaton has 10920 states and 14454 transitions. Word has length 61 [2021-11-07 15:52:54,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:52:54,180 INFO L470 AbstractCegarLoop]: Abstraction has 10920 states and 14454 transitions. [2021-11-07 15:52:54,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:54,180 INFO L276 IsEmpty]: Start isEmpty. Operand 10920 states and 14454 transitions. [2021-11-07 15:52:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 15:52:54,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:52:54,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:52:54,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 15:52:54,184 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 15:52:54,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:52:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash 622908746, now seen corresponding path program 1 times [2021-11-07 15:52:54,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:52:54,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527579842] [2021-11-07 15:52:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:52:54,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:52:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:52:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:52:54,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:52:54,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527579842] [2021-11-07 15:52:54,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527579842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:52:54,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:52:54,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:52:54,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296405980] [2021-11-07 15:52:54,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:52:54,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:52:54,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:52:54,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:52:54,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:52:54,304 INFO L87 Difference]: Start difference. First operand 10920 states and 14454 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:54,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:52:54,802 INFO L93 Difference]: Finished difference Result 26895 states and 35725 transitions. [2021-11-07 15:52:54,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:52:54,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-07 15:52:54,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:52:54,837 INFO L225 Difference]: With dead ends: 26895 [2021-11-07 15:52:54,837 INFO L226 Difference]: Without dead ends: 16008 [2021-11-07 15:52:54,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:52:54,855 INFO L933 BasicCegarLoop]: 3330 mSDtfsCounter, 1714 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 5886 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.49ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.31ms IncrementalHoareTripleChecker+Time [2021-11-07 15:52:54,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1714 Valid, 5886 Invalid, 85 Unknown, 0 Unchecked, 8.49ms Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 101.31ms Time] [2021-11-07 15:52:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16008 states. [2021-11-07 15:52:55,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16008 to 15216. [2021-11-07 15:52:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15216 states, 15204 states have (on average 1.3313601683767429) internal successors, (20242), 15215 states have internal predecessors, (20242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15216 states to 15216 states and 20242 transitions. [2021-11-07 15:52:55,191 INFO L78 Accepts]: Start accepts. Automaton has 15216 states and 20242 transitions. Word has length 61 [2021-11-07 15:52:55,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:52:55,194 INFO L470 AbstractCegarLoop]: Abstraction has 15216 states and 20242 transitions. [2021-11-07 15:52:55,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:55,195 INFO L276 IsEmpty]: Start isEmpty. Operand 15216 states and 20242 transitions. [2021-11-07 15:52:55,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 15:52:55,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:52:55,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:52:55,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 15:52:55,197 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 15:52:55,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:52:55,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1859970716, now seen corresponding path program 1 times [2021-11-07 15:52:55,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:52:55,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462003304] [2021-11-07 15:52:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:52:55,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:52:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:52:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:52:55,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:52:55,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462003304] [2021-11-07 15:52:55,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462003304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:52:55,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:52:55,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:52:55,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387731755] [2021-11-07 15:52:55,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:52:55,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:52:55,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:52:55,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:52:55,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:52:55,321 INFO L87 Difference]: Start difference. First operand 15216 states and 20242 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:56,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:52:56,233 INFO L93 Difference]: Finished difference Result 62288 states and 82676 transitions. [2021-11-07 15:52:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:52:56,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-07 15:52:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:52:56,341 INFO L225 Difference]: With dead ends: 62288 [2021-11-07 15:52:56,342 INFO L226 Difference]: Without dead ends: 47105 [2021-11-07 15:52:56,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:52:56,382 INFO L933 BasicCegarLoop]: 3970 mSDtfsCounter, 4955 mSDsluCounter, 5276 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4955 SdHoareTripleChecker+Valid, 9246 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.70ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.58ms IncrementalHoareTripleChecker+Time [2021-11-07 15:52:56,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4955 Valid, 9246 Invalid, 60 Unknown, 0 Unchecked, 15.70ms Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 54.58ms Time] [2021-11-07 15:52:56,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47105 states. [2021-11-07 15:52:57,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47105 to 28447. [2021-11-07 15:52:57,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28447 states, 28435 states have (on average 1.3300509934939335) internal successors, (37820), 28446 states have internal predecessors, (37820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28447 states to 28447 states and 37820 transitions. [2021-11-07 15:52:57,218 INFO L78 Accepts]: Start accepts. Automaton has 28447 states and 37820 transitions. Word has length 62 [2021-11-07 15:52:57,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:52:57,218 INFO L470 AbstractCegarLoop]: Abstraction has 28447 states and 37820 transitions. [2021-11-07 15:52:57,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:57,218 INFO L276 IsEmpty]: Start isEmpty. Operand 28447 states and 37820 transitions. [2021-11-07 15:52:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 15:52:57,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:52:57,220 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:52:57,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 15:52:57,220 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 15:52:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:52:57,221 INFO L85 PathProgramCache]: Analyzing trace with hash -925212042, now seen corresponding path program 1 times [2021-11-07 15:52:57,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:52:57,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667537959] [2021-11-07 15:52:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:52:57,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:52:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:52:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 15:52:57,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:52:57,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667537959] [2021-11-07 15:52:57,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667537959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:52:57,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:52:57,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 15:52:57,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128682139] [2021-11-07 15:52:57,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:52:57,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:52:57,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:52:57,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:52:57,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:52:57,528 INFO L87 Difference]: Start difference. First operand 28447 states and 37820 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:52:58,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:52:58,923 INFO L93 Difference]: Finished difference Result 90807 states and 120568 transitions. [2021-11-07 15:52:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 15:52:58,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 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 68 [2021-11-07 15:52:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:52:59,069 INFO L225 Difference]: With dead ends: 90807 [2021-11-07 15:52:59,070 INFO L226 Difference]: Without dead ends: 62393 [2021-11-07 15:52:59,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.74ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 15:52:59,119 INFO L933 BasicCegarLoop]: 4963 mSDtfsCounter, 7542 mSDsluCounter, 11201 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7542 SdHoareTripleChecker+Valid, 16164 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.11ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.35ms IncrementalHoareTripleChecker+Time [2021-11-07 15:52:59,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7542 Valid, 16164 Invalid, 143 Unknown, 0 Unchecked, 22.11ms Time], IncrementalHoareTripleChecker [32 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 102.35ms Time] [2021-11-07 15:52:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62393 states. [2021-11-07 15:53:00,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62393 to 28527. [2021-11-07 15:53:00,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28527 states, 28515 states have (on average 1.3291250219182886) internal successors, (37900), 28526 states have internal predecessors, (37900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:00,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28527 states to 28527 states and 37900 transitions. [2021-11-07 15:53:00,154 INFO L78 Accepts]: Start accepts. Automaton has 28527 states and 37900 transitions. Word has length 68 [2021-11-07 15:53:00,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:53:00,155 INFO L470 AbstractCegarLoop]: Abstraction has 28527 states and 37900 transitions. [2021-11-07 15:53:00,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:00,155 INFO L276 IsEmpty]: Start isEmpty. Operand 28527 states and 37900 transitions. [2021-11-07 15:53:00,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 15:53:00,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:53:00,161 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:53:00,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 15:53:00,162 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 15:53:00,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:53:00,163 INFO L85 PathProgramCache]: Analyzing trace with hash 293042139, now seen corresponding path program 1 times [2021-11-07 15:53:00,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:53:00,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224757857] [2021-11-07 15:53:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:00,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:53:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:53:00,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:53:00,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224757857] [2021-11-07 15:53:00,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224757857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:53:00,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:53:00,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:53:00,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015789763] [2021-11-07 15:53:00,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:53:00,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:53:00,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:53:00,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:53:00,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:53:00,298 INFO L87 Difference]: Start difference. First operand 28527 states and 37900 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:01,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:53:01,638 INFO L93 Difference]: Finished difference Result 81051 states and 107870 transitions. [2021-11-07 15:53:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:53:01,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 156 [2021-11-07 15:53:01,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:53:01,742 INFO L225 Difference]: With dead ends: 81051 [2021-11-07 15:53:01,742 INFO L226 Difference]: Without dead ends: 52557 [2021-11-07 15:53:01,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:53:01,780 INFO L933 BasicCegarLoop]: 4860 mSDtfsCounter, 2378 mSDsluCounter, 2628 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 7488 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.69ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.34ms IncrementalHoareTripleChecker+Time [2021-11-07 15:53:01,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2378 Valid, 7488 Invalid, 14 Unknown, 0 Unchecked, 6.69ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 37.34ms Time] [2021-11-07 15:53:01,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52557 states. [2021-11-07 15:53:03,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52557 to 52501. [2021-11-07 15:53:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52501 states, 52489 states have (on average 1.3322600925908286) internal successors, (69929), 52500 states have internal predecessors, (69929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52501 states to 52501 states and 69929 transitions. [2021-11-07 15:53:03,369 INFO L78 Accepts]: Start accepts. Automaton has 52501 states and 69929 transitions. Word has length 156 [2021-11-07 15:53:03,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:53:03,369 INFO L470 AbstractCegarLoop]: Abstraction has 52501 states and 69929 transitions. [2021-11-07 15:53:03,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:03,369 INFO L276 IsEmpty]: Start isEmpty. Operand 52501 states and 69929 transitions. [2021-11-07 15:53:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-07 15:53:03,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:53:03,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:53:03,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 15:53:03,374 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 15:53:03,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:53:03,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1152985167, now seen corresponding path program 1 times [2021-11-07 15:53:03,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:53:03,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594205814] [2021-11-07 15:53:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:03,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:53:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 15:53:03,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:53:03,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594205814] [2021-11-07 15:53:03,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594205814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:53:03,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:53:03,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:53:03,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426089612] [2021-11-07 15:53:03,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:53:03,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:53:03,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:53:03,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:53:03,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:53:03,492 INFO L87 Difference]: Start difference. First operand 52501 states and 69929 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:05,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:53:05,091 INFO L93 Difference]: Finished difference Result 104969 states and 139823 transitions. [2021-11-07 15:53:05,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:53:05,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 175 [2021-11-07 15:53:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:53:05,197 INFO L225 Difference]: With dead ends: 104969 [2021-11-07 15:53:05,197 INFO L226 Difference]: Without dead ends: 52501 [2021-11-07 15:53:05,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:53:05,251 INFO L933 BasicCegarLoop]: 2673 mSDtfsCounter, 2671 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2671 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.10ms IncrementalHoareTripleChecker+Time [2021-11-07 15:53:05,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2671 Valid, 2673 Invalid, 3 Unknown, 0 Unchecked, 3.83ms Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 29.10ms Time] [2021-11-07 15:53:05,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52501 states. [2021-11-07 15:53:06,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52501 to 52501. [2021-11-07 15:53:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52501 states, 52489 states have (on average 1.3316504410447902) internal successors, (69897), 52500 states have internal predecessors, (69897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:06,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52501 states to 52501 states and 69897 transitions. [2021-11-07 15:53:06,957 INFO L78 Accepts]: Start accepts. Automaton has 52501 states and 69897 transitions. Word has length 175 [2021-11-07 15:53:06,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:53:06,958 INFO L470 AbstractCegarLoop]: Abstraction has 52501 states and 69897 transitions. [2021-11-07 15:53:06,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:06,958 INFO L276 IsEmpty]: Start isEmpty. Operand 52501 states and 69897 transitions. [2021-11-07 15:53:06,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-07 15:53:06,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:53:06,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:53:06,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 15:53:06,963 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 15:53:06,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:53:06,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1769528987, now seen corresponding path program 1 times [2021-11-07 15:53:06,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:53:06,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779850529] [2021-11-07 15:53:06,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:06,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:53:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 15:53:07,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:53:07,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779850529] [2021-11-07 15:53:07,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779850529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:53:07,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:53:07,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:53:07,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236253302] [2021-11-07 15:53:07,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:53:07,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:53:07,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:53:07,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:53:07,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:53:07,123 INFO L87 Difference]: Start difference. First operand 52501 states and 69897 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:09,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:53:09,842 INFO L93 Difference]: Finished difference Result 155421 states and 206933 transitions. [2021-11-07 15:53:09,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:53:09,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-11-07 15:53:09,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:53:10,052 INFO L225 Difference]: With dead ends: 155421 [2021-11-07 15:53:10,052 INFO L226 Difference]: Without dead ends: 102953 [2021-11-07 15:53:10,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:53:10,119 INFO L933 BasicCegarLoop]: 5142 mSDtfsCounter, 2511 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2511 SdHoareTripleChecker+Valid, 7782 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.88ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.48ms IncrementalHoareTripleChecker+Time [2021-11-07 15:53:10,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2511 Valid, 7782 Invalid, 20 Unknown, 0 Unchecked, 6.88ms Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 24.48ms Time] [2021-11-07 15:53:10,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102953 states. [2021-11-07 15:53:12,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102953 to 52517. [2021-11-07 15:53:12,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52517 states, 52505 states have (on average 1.331549376249881) internal successors, (69913), 52516 states have internal predecessors, (69913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52517 states to 52517 states and 69913 transitions. [2021-11-07 15:53:12,200 INFO L78 Accepts]: Start accepts. Automaton has 52517 states and 69913 transitions. Word has length 188 [2021-11-07 15:53:12,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:53:12,200 INFO L470 AbstractCegarLoop]: Abstraction has 52517 states and 69913 transitions. [2021-11-07 15:53:12,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:12,200 INFO L276 IsEmpty]: Start isEmpty. Operand 52517 states and 69913 transitions. [2021-11-07 15:53:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-07 15:53:12,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:53:12,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:53:12,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 15:53:12,205 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 15:53:12,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:53:12,206 INFO L85 PathProgramCache]: Analyzing trace with hash -719684328, now seen corresponding path program 1 times [2021-11-07 15:53:12,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:53:12,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158363047] [2021-11-07 15:53:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:12,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:53:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 15:53:12,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:53:12,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158363047] [2021-11-07 15:53:12,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158363047] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:53:12,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725620932] [2021-11-07 15:53:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:12,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:53:12,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:53:12,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 15:53:12,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 15:53:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:13,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 3586 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 15:53:13,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:53:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 15:53:13,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 15:53:13,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725620932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:53:13,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 15:53:13,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 15:53:13,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456885993] [2021-11-07 15:53:13,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:53:13,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:53:13,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:53:13,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:53:13,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:53:13,540 INFO L87 Difference]: Start difference. First operand 52517 states and 69913 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:53:16,650 INFO L93 Difference]: Finished difference Result 157005 states and 209189 transitions. [2021-11-07 15:53:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:53:16,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 203 [2021-11-07 15:53:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:53:16,860 INFO L225 Difference]: With dead ends: 157005 [2021-11-07 15:53:16,860 INFO L226 Difference]: Without dead ends: 104521 [2021-11-07 15:53:16,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.00ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:53:16,919 INFO L933 BasicCegarLoop]: 4926 mSDtfsCounter, 2582 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 7507 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.55ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 198.21ms IncrementalHoareTripleChecker+Time [2021-11-07 15:53:16,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2582 Valid, 7507 Invalid, 178 Unknown, 0 Unchecked, 7.55ms Time], IncrementalHoareTripleChecker [37 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 198.21ms Time] [2021-11-07 15:53:17,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104521 states. [2021-11-07 15:53:19,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104521 to 53189. [2021-11-07 15:53:19,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53189 states, 53177 states have (on average 1.3273595727476164) internal successors, (70585), 53188 states have internal predecessors, (70585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53189 states to 53189 states and 70585 transitions. [2021-11-07 15:53:19,381 INFO L78 Accepts]: Start accepts. Automaton has 53189 states and 70585 transitions. Word has length 203 [2021-11-07 15:53:19,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:53:19,381 INFO L470 AbstractCegarLoop]: Abstraction has 53189 states and 70585 transitions. [2021-11-07 15:53:19,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 53189 states and 70585 transitions. [2021-11-07 15:53:19,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-07 15:53:19,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:53:19,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:53:19,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 15:53:19,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 15:53:19,608 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 15:53:19,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:53:19,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1899573033, now seen corresponding path program 1 times [2021-11-07 15:53:19,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:53:19,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349025165] [2021-11-07 15:53:19,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:19,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:53:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 15:53:19,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:53:19,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349025165] [2021-11-07 15:53:19,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349025165] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:53:19,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750487731] [2021-11-07 15:53:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:19,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:53:19,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:53:19,747 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 15:53:19,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 15:53:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:20,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 3694 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 15:53:20,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:53:20,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 15:53:20,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 15:53:20,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750487731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:53:20,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 15:53:20,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 15:53:20,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023302815] [2021-11-07 15:53:20,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:53:20,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:53:20,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:53:20,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:53:20,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:53:20,754 INFO L87 Difference]: Start difference. First operand 53189 states and 70585 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:23,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:53:23,208 INFO L93 Difference]: Finished difference Result 123569 states and 165127 transitions. [2021-11-07 15:53:23,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:53:23,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2021-11-07 15:53:23,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:53:23,323 INFO L225 Difference]: With dead ends: 123569 [2021-11-07 15:53:23,323 INFO L226 Difference]: Without dead ends: 70413 [2021-11-07 15:53:23,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.85ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:53:23,368 INFO L933 BasicCegarLoop]: 3952 mSDtfsCounter, 1981 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 6268 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.82ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 143.18ms IncrementalHoareTripleChecker+Time [2021-11-07 15:53:23,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1981 Valid, 6268 Invalid, 135 Unknown, 0 Unchecked, 5.82ms Time], IncrementalHoareTripleChecker [39 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 143.18ms Time] [2021-11-07 15:53:23,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70413 states. [2021-11-07 15:53:25,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70413 to 68829. [2021-11-07 15:53:25,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68829 states, 68817 states have (on average 1.3351497449758054) internal successors, (91881), 68828 states have internal predecessors, (91881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68829 states to 68829 states and 91881 transitions. [2021-11-07 15:53:25,676 INFO L78 Accepts]: Start accepts. Automaton has 68829 states and 91881 transitions. Word has length 203 [2021-11-07 15:53:25,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:53:25,676 INFO L470 AbstractCegarLoop]: Abstraction has 68829 states and 91881 transitions. [2021-11-07 15:53:25,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:25,677 INFO L276 IsEmpty]: Start isEmpty. Operand 68829 states and 91881 transitions. [2021-11-07 15:53:25,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-07 15:53:25,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:53:25,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:53:25,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 15:53:25,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-07 15:53:25,896 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 15:53:25,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:53:25,897 INFO L85 PathProgramCache]: Analyzing trace with hash 438643562, now seen corresponding path program 1 times [2021-11-07 15:53:25,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:53:25,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715608090] [2021-11-07 15:53:25,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:25,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:53:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 15:53:26,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:53:26,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715608090] [2021-11-07 15:53:26,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715608090] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:53:26,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165260154] [2021-11-07 15:53:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:26,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:53:26,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:53:26,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 15:53:26,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 15:53:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:26,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 3620 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 15:53:26,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:53:27,200 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 15:53:27,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 15:53:27,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165260154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:53:27,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 15:53:27,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 15:53:27,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924542683] [2021-11-07 15:53:27,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:53:27,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:53:27,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:53:27,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:53:27,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:53:27,204 INFO L87 Difference]: Start difference. First operand 68829 states and 91881 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 2 states have internal predecessors, (214), 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)