./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.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 10bb499b72e5e53415f4b388a6311d98c8f62bfee9e49e4ef36d0afd6a3d07fa --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:37:59,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:37:59,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:37:59,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:37:59,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:37:59,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:37:59,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:37:59,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:37:59,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:37:59,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:37:59,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:37:59,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:37:59,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:37:59,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:37:59,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:37:59,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:37:59,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:37:59,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:37:59,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:37:59,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:37:59,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:37:59,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:37:59,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:37:59,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:37:59,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:37:59,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:37:59,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:37:59,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:37:59,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:37:59,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:37:59,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:37:59,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:37:59,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:37:59,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:37:59,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:37:59,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:37:59,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:37:59,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:37:59,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:37:59,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:37:59,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:37:59,465 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:37:59,486 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:37:59,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:37:59,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:37:59,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:37:59,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:37:59,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:37:59,488 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:37:59,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:37:59,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:37:59,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:37:59,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:37:59,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:37:59,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:37:59,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:37:59,490 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:37:59,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:37:59,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:37:59,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:37:59,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:37:59,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:37:59,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:37:59,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:37:59,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:37:59,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:37:59,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:37:59,491 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:37:59,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:37:59,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:37:59,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:37:59,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10bb499b72e5e53415f4b388a6311d98c8f62bfee9e49e4ef36d0afd6a3d07fa [2021-11-07 16:37:59,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:37:59,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:37:59,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:37:59,673 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:37:59,673 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:37:59,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-07 16:37:59,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351465fd5/b9e08ae11b124b6b87118a04e73274f4/FLAG45a1ad814 [2021-11-07 16:38:00,470 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:38:00,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-07 16:38:00,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351465fd5/b9e08ae11b124b6b87118a04e73274f4/FLAG45a1ad814 [2021-11-07 16:38:00,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351465fd5/b9e08ae11b124b6b87118a04e73274f4 [2021-11-07 16:38:00,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:38:00,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:38:00,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:38:00,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:38:00,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:38:00,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:38:00" (1/1) ... [2021-11-07 16:38:00,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183fffef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:38:00, skipping insertion in model container [2021-11-07 16:38:00,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:38:00" (1/1) ... [2021-11-07 16:38:00,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:38:00,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:38:03,815 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446625,446638] [2021-11-07 16:38:03,818 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446770,446783] [2021-11-07 16:38:03,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:38:03,918 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:38:04,213 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446625,446638] [2021-11-07 16:38:04,213 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446770,446783] [2021-11-07 16:38:04,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:38:04,408 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:38:04,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:38:04 WrapperNode [2021-11-07 16:38:04,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:38:04,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:38:04,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:38:04,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:38:04,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:38:04" (1/1) ... [2021-11-07 16:38:04,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:38:04" (1/1) ... [2021-11-07 16:38:05,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:38:05,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:38:05,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:38:05,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:38:05,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:38:04" (1/1) ... [2021-11-07 16:38:05,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:38:04" (1/1) ... [2021-11-07 16:38:06,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:38:04" (1/1) ... [2021-11-07 16:38:06,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:38:04" (1/1) ... [2021-11-07 16:38:06,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:38:04" (1/1) ... [2021-11-07 16:38:06,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:38:04" (1/1) ... [2021-11-07 16:38:06,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:38:04" (1/1) ... [2021-11-07 16:38:07,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:38:07,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:38:07,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:38:07,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:38:07,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:38:04" (1/1) ... [2021-11-07 16:38:07,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:38:07,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:38:07,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 16:38:07,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 16:38:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:38:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:38:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:38:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:38:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:38:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:38:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:38:07,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:38:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:38:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:38:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:38:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:38:07,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:38:07,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:38:07,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:39:10,534 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 16:39:10,535 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 16:39:10,535 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 16:39:10,535 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 16:39:10,537 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 16:39:10,537 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 16:39:10,573 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:39:10,573 INFO L299 CfgBuilder]: Removed 9450 assume(true) statements. [2021-11-07 16:39:10,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:39:10 BoogieIcfgContainer [2021-11-07 16:39:10,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:39:10,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:39:10,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:39:10,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:39:10,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:38:00" (1/3) ... [2021-11-07 16:39:10,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ae2704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:39:10, skipping insertion in model container [2021-11-07 16:39:10,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:38:04" (2/3) ... [2021-11-07 16:39:10,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ae2704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:39:10, skipping insertion in model container [2021-11-07 16:39:10,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:39:10" (3/3) ... [2021-11-07 16:39:10,586 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-07 16:39:10,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:39:10,590 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-07 16:39:10,653 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:39:10,659 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 16:39:10,659 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-07 16:39:10,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 8960 states, 8940 states have (on average 1.3436241610738255) internal successors, (12012), 8959 states have internal predecessors, (12012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:10,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 16:39:10,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:39:10,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:39:10,764 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:39:10,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:39:10,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1699671816, now seen corresponding path program 1 times [2021-11-07 16:39:10,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:39:10,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800355868] [2021-11-07 16:39:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:39:10,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:39:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:39:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:39:11,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:39:11,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800355868] [2021-11-07 16:39:11,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800355868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:39:11,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:39:11,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:39:11,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239286063] [2021-11-07 16:39:11,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:39:11,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:39:11,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:39:11,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:39:11,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:11,430 INFO L87 Difference]: Start difference. First operand has 8960 states, 8940 states have (on average 1.3436241610738255) internal successors, (12012), 8959 states have internal predecessors, (12012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:13,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:39:14,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:39:14,210 INFO L93 Difference]: Finished difference Result 24617 states and 33081 transitions. [2021-11-07 16:39:14,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:39:14,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-11-07 16:39:14,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:39:14,279 INFO L225 Difference]: With dead ends: 24617 [2021-11-07 16:39:14,280 INFO L226 Difference]: Without dead ends: 15378 [2021-11-07 16:39:14,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:14,309 INFO L933 BasicCegarLoop]: 11918 mSDtfsCounter, 9251 mSDsluCounter, 11814 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2238.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9251 SdHoareTripleChecker+Valid, 23732 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.31ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2359.80ms IncrementalHoareTripleChecker+Time [2021-11-07 16:39:14,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9251 Valid, 23732 Invalid, 132 Unknown, 0 Unchecked, 37.31ms Time], IncrementalHoareTripleChecker [11 Valid, 120 Invalid, 1 Unknown, 0 Unchecked, 2359.80ms Time] [2021-11-07 16:39:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15378 states. [2021-11-07 16:39:14,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15378 to 14710. [2021-11-07 16:39:14,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14710 states, 14690 states have (on average 1.3294077603812118) internal successors, (19529), 14709 states have internal predecessors, (19529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14710 states to 14710 states and 19529 transitions. [2021-11-07 16:39:15,015 INFO L78 Accepts]: Start accepts. Automaton has 14710 states and 19529 transitions. Word has length 105 [2021-11-07 16:39:15,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:39:15,017 INFO L470 AbstractCegarLoop]: Abstraction has 14710 states and 19529 transitions. [2021-11-07 16:39:15,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:15,018 INFO L276 IsEmpty]: Start isEmpty. Operand 14710 states and 19529 transitions. [2021-11-07 16:39:15,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 16:39:15,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:39:15,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:39:15,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:39:15,025 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:39:15,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:39:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2080629326, now seen corresponding path program 1 times [2021-11-07 16:39:15,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:39:15,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042875471] [2021-11-07 16:39:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:39:15,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:39:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:39:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:39:15,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:39:15,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042875471] [2021-11-07 16:39:15,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042875471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:39:15,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:39:15,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:39:15,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623852672] [2021-11-07 16:39:15,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:39:15,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:39:15,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:39:15,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:39:15,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:15,344 INFO L87 Difference]: Start difference. First operand 14710 states and 19529 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:17,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:39:18,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:39:18,191 INFO L93 Difference]: Finished difference Result 41004 states and 54414 transitions. [2021-11-07 16:39:18,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:39:18,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-07 16:39:18,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:39:18,263 INFO L225 Difference]: With dead ends: 41004 [2021-11-07 16:39:18,263 INFO L226 Difference]: Without dead ends: 26450 [2021-11-07 16:39:18,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:18,294 INFO L933 BasicCegarLoop]: 11694 mSDtfsCounter, 9360 mSDsluCounter, 11372 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2127.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9360 SdHoareTripleChecker+Valid, 23066 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.55ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2281.24ms IncrementalHoareTripleChecker+Time [2021-11-07 16:39:18,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9360 Valid, 23066 Invalid, 65 Unknown, 0 Unchecked, 28.55ms Time], IncrementalHoareTripleChecker [25 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 2281.24ms Time] [2021-11-07 16:39:18,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26450 states. [2021-11-07 16:39:18,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26450 to 25950. [2021-11-07 16:39:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25950 states, 25930 states have (on average 1.3289240262244504) internal successors, (34459), 25949 states have internal predecessors, (34459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:18,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25950 states to 25950 states and 34459 transitions. [2021-11-07 16:39:18,885 INFO L78 Accepts]: Start accepts. Automaton has 25950 states and 34459 transitions. Word has length 110 [2021-11-07 16:39:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:39:18,887 INFO L470 AbstractCegarLoop]: Abstraction has 25950 states and 34459 transitions. [2021-11-07 16:39:18,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 25950 states and 34459 transitions. [2021-11-07 16:39:18,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 16:39:18,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:39:18,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:39:18,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:39:18,902 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:39:18,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:39:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1721395662, now seen corresponding path program 1 times [2021-11-07 16:39:18,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:39:18,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356816260] [2021-11-07 16:39:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:39:18,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:39:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:39:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:39:19,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:39:19,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356816260] [2021-11-07 16:39:19,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356816260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:39:19,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:39:19,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:39:19,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938770646] [2021-11-07 16:39:19,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:39:19,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:39:19,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:39:19,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:39:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:19,142 INFO L87 Difference]: Start difference. First operand 25950 states and 34459 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:21,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:39:21,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:39:21,850 INFO L93 Difference]: Finished difference Result 59522 states and 79063 transitions. [2021-11-07 16:39:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:39:21,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-07 16:39:21,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:39:21,917 INFO L225 Difference]: With dead ends: 59522 [2021-11-07 16:39:21,917 INFO L226 Difference]: Without dead ends: 33728 [2021-11-07 16:39:21,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:21,964 INFO L933 BasicCegarLoop]: 13794 mSDtfsCounter, 4811 mSDsluCounter, 11389 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2140.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4811 SdHoareTripleChecker+Valid, 25183 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.35ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2309.74ms IncrementalHoareTripleChecker+Time [2021-11-07 16:39:21,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4811 Valid, 25183 Invalid, 88 Unknown, 0 Unchecked, 14.35ms Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2309.74ms Time] [2021-11-07 16:39:21,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33728 states. [2021-11-07 16:39:22,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33728 to 33696. [2021-11-07 16:39:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33696 states, 33676 states have (on average 1.3270875400878965) internal successors, (44691), 33695 states have internal predecessors, (44691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33696 states to 33696 states and 44691 transitions. [2021-11-07 16:39:22,743 INFO L78 Accepts]: Start accepts. Automaton has 33696 states and 44691 transitions. Word has length 110 [2021-11-07 16:39:22,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:39:22,744 INFO L470 AbstractCegarLoop]: Abstraction has 33696 states and 44691 transitions. [2021-11-07 16:39:22,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:22,744 INFO L276 IsEmpty]: Start isEmpty. Operand 33696 states and 44691 transitions. [2021-11-07 16:39:22,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 16:39:22,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:39:22,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:39:22,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:39:22,749 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:39:22,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:39:22,749 INFO L85 PathProgramCache]: Analyzing trace with hash -998040944, now seen corresponding path program 1 times [2021-11-07 16:39:22,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:39:22,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256776330] [2021-11-07 16:39:22,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:39:22,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:39:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:39:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:39:22,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:39:22,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256776330] [2021-11-07 16:39:22,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256776330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:39:22,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:39:22,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:39:22,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081152578] [2021-11-07 16:39:22,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:39:22,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:39:22,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:39:22,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:39:22,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:22,970 INFO L87 Difference]: Start difference. First operand 33696 states and 44691 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:25,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:39:25,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:39:25,849 INFO L93 Difference]: Finished difference Result 100736 states and 133683 transitions. [2021-11-07 16:39:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:39:25,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 16:39:25,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:39:25,967 INFO L225 Difference]: With dead ends: 100736 [2021-11-07 16:39:25,967 INFO L226 Difference]: Without dead ends: 67196 [2021-11-07 16:39:26,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:26,024 INFO L933 BasicCegarLoop]: 13601 mSDtfsCounter, 11249 mSDsluCounter, 11430 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2076.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11249 SdHoareTripleChecker+Valid, 25031 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.62ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2241.96ms IncrementalHoareTripleChecker+Time [2021-11-07 16:39:26,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11249 Valid, 25031 Invalid, 21 Unknown, 0 Unchecked, 15.62ms Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2241.96ms Time] [2021-11-07 16:39:26,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67196 states. [2021-11-07 16:39:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67196 to 67108. [2021-11-07 16:39:27,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67108 states, 67088 states have (on average 1.3277337228714525) internal successors, (89075), 67107 states have internal predecessors, (89075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:27,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67108 states to 67108 states and 89075 transitions. [2021-11-07 16:39:27,539 INFO L78 Accepts]: Start accepts. Automaton has 67108 states and 89075 transitions. Word has length 125 [2021-11-07 16:39:27,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:39:27,539 INFO L470 AbstractCegarLoop]: Abstraction has 67108 states and 89075 transitions. [2021-11-07 16:39:27,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:27,540 INFO L276 IsEmpty]: Start isEmpty. Operand 67108 states and 89075 transitions. [2021-11-07 16:39:27,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 16:39:27,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:39:27,576 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:39:27,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:39:27,576 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:39:27,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:39:27,576 INFO L85 PathProgramCache]: Analyzing trace with hash 452132512, now seen corresponding path program 1 times [2021-11-07 16:39:27,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:39:27,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663096440] [2021-11-07 16:39:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:39:27,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:39:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:39:27,751 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:39:27,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:39:27,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663096440] [2021-11-07 16:39:27,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663096440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:39:27,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:39:27,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:39:27,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653066804] [2021-11-07 16:39:27,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:39:27,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:39:27,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:39:27,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:39:27,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:27,753 INFO L87 Difference]: Start difference. First operand 67108 states and 89075 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:29,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:39:30,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:39:30,999 INFO L93 Difference]: Finished difference Result 134256 states and 178233 transitions. [2021-11-07 16:39:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:39:30,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 137 [2021-11-07 16:39:31,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:39:31,110 INFO L225 Difference]: With dead ends: 134256 [2021-11-07 16:39:31,111 INFO L226 Difference]: Without dead ends: 67304 [2021-11-07 16:39:31,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:31,180 INFO L933 BasicCegarLoop]: 11438 mSDtfsCounter, 270 mSDsluCounter, 11403 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2089.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 22841 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.95ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2260.64ms IncrementalHoareTripleChecker+Time [2021-11-07 16:39:31,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 22841 Invalid, 28 Unknown, 0 Unchecked, 8.95ms Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 1 Unknown, 0 Unchecked, 2260.64ms Time] [2021-11-07 16:39:31,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67304 states. [2021-11-07 16:39:32,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67304 to 67304. [2021-11-07 16:39:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67304 states, 67284 states have (on average 1.3276410439331787) internal successors, (89329), 67303 states have internal predecessors, (89329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:32,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67304 states to 67304 states and 89329 transitions. [2021-11-07 16:39:32,319 INFO L78 Accepts]: Start accepts. Automaton has 67304 states and 89329 transitions. Word has length 137 [2021-11-07 16:39:32,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:39:32,320 INFO L470 AbstractCegarLoop]: Abstraction has 67304 states and 89329 transitions. [2021-11-07 16:39:32,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:32,320 INFO L276 IsEmpty]: Start isEmpty. Operand 67304 states and 89329 transitions. [2021-11-07 16:39:32,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 16:39:32,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:39:32,328 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:39:32,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:39:32,328 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:39:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:39:32,329 INFO L85 PathProgramCache]: Analyzing trace with hash -128987353, now seen corresponding path program 1 times [2021-11-07 16:39:32,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:39:32,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687362767] [2021-11-07 16:39:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:39:32,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:39:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:39:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:39:32,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:39:32,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687362767] [2021-11-07 16:39:32,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687362767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:39:32,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:39:32,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:39:32,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977839582] [2021-11-07 16:39:32,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:39:32,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:39:32,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:39:32,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:39:32,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:32,508 INFO L87 Difference]: Start difference. First operand 67304 states and 89329 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:34,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:39:36,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:39:36,124 INFO L93 Difference]: Finished difference Result 149752 states and 198805 transitions. [2021-11-07 16:39:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:39:36,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2021-11-07 16:39:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:39:36,265 INFO L225 Difference]: With dead ends: 149752 [2021-11-07 16:39:36,266 INFO L226 Difference]: Without dead ends: 82800 [2021-11-07 16:39:36,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:36,351 INFO L933 BasicCegarLoop]: 13792 mSDtfsCounter, 4817 mSDsluCounter, 11374 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2136.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4817 SdHoareTripleChecker+Valid, 25166 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.39ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2503.56ms IncrementalHoareTripleChecker+Time [2021-11-07 16:39:36,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4817 Valid, 25166 Invalid, 88 Unknown, 0 Unchecked, 12.39ms Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2503.56ms Time] [2021-11-07 16:39:36,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82800 states. [2021-11-07 16:39:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82800 to 82752. [2021-11-07 16:39:37,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82752 states, 82732 states have (on average 1.3266088091669488) internal successors, (109753), 82751 states have internal predecessors, (109753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82752 states to 82752 states and 109753 transitions. [2021-11-07 16:39:38,031 INFO L78 Accepts]: Start accepts. Automaton has 82752 states and 109753 transitions. Word has length 142 [2021-11-07 16:39:38,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:39:38,032 INFO L470 AbstractCegarLoop]: Abstraction has 82752 states and 109753 transitions. [2021-11-07 16:39:38,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:38,032 INFO L276 IsEmpty]: Start isEmpty. Operand 82752 states and 109753 transitions. [2021-11-07 16:39:38,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-07 16:39:38,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:39:38,043 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:39:38,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 16:39:38,043 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:39:38,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:39:38,043 INFO L85 PathProgramCache]: Analyzing trace with hash -386897136, now seen corresponding path program 1 times [2021-11-07 16:39:38,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:39:38,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793005754] [2021-11-07 16:39:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:39:38,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:39:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:39:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:39:38,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:39:38,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793005754] [2021-11-07 16:39:38,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793005754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:39:38,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:39:38,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:39:38,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274091304] [2021-11-07 16:39:38,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:39:38,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:39:38,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:39:38,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:39:38,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:38,414 INFO L87 Difference]: Start difference. First operand 82752 states and 109753 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:40,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:39:42,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:39:42,925 INFO L93 Difference]: Finished difference Result 246816 states and 327569 transitions. [2021-11-07 16:39:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:39:42,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 166 [2021-11-07 16:39:42,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:39:43,300 INFO L225 Difference]: With dead ends: 246816 [2021-11-07 16:39:43,300 INFO L226 Difference]: Without dead ends: 164416 [2021-11-07 16:39:43,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:43,486 INFO L933 BasicCegarLoop]: 13860 mSDtfsCounter, 11222 mSDsluCounter, 11422 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2081.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11222 SdHoareTripleChecker+Valid, 25282 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.18ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2264.92ms IncrementalHoareTripleChecker+Time [2021-11-07 16:39:43,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11222 Valid, 25282 Invalid, 25 Unknown, 0 Unchecked, 16.18ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2264.92ms Time] [2021-11-07 16:39:43,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164416 states. [2021-11-07 16:39:46,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164416 to 164376. [2021-11-07 16:39:46,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164376 states, 164356 states have (on average 1.3273199639806275) internal successors, (218153), 164375 states have internal predecessors, (218153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164376 states to 164376 states and 218153 transitions. [2021-11-07 16:39:47,193 INFO L78 Accepts]: Start accepts. Automaton has 164376 states and 218153 transitions. Word has length 166 [2021-11-07 16:39:47,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:39:47,194 INFO L470 AbstractCegarLoop]: Abstraction has 164376 states and 218153 transitions. [2021-11-07 16:39:47,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:47,194 INFO L276 IsEmpty]: Start isEmpty. Operand 164376 states and 218153 transitions. [2021-11-07 16:39:47,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-07 16:39:47,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:39:47,206 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:39:47,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 16:39:47,206 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:39:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:39:47,207 INFO L85 PathProgramCache]: Analyzing trace with hash -359831534, now seen corresponding path program 1 times [2021-11-07 16:39:47,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:39:47,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090149937] [2021-11-07 16:39:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:39:47,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:39:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:39:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:39:47,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:39:47,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090149937] [2021-11-07 16:39:47,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090149937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:39:47,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:39:47,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:39:47,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194300543] [2021-11-07 16:39:47,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:39:47,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:39:47,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:39:47,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:39:47,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:47,358 INFO L87 Difference]: Start difference. First operand 164376 states and 218153 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:39:49,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:39:53,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:39:53,813 INFO L93 Difference]: Finished difference Result 410088 states and 544393 transitions. [2021-11-07 16:39:53,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:39:53,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 166 [2021-11-07 16:39:53,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:39:54,341 INFO L225 Difference]: With dead ends: 410088 [2021-11-07 16:39:54,342 INFO L226 Difference]: Without dead ends: 244922 [2021-11-07 16:39:54,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:39:54,561 INFO L933 BasicCegarLoop]: 22665 mSDtfsCounter, 11218 mSDsluCounter, 11426 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2081.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11218 SdHoareTripleChecker+Valid, 34091 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.50ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2256.73ms IncrementalHoareTripleChecker+Time [2021-11-07 16:39:54,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11218 Valid, 34091 Invalid, 26 Unknown, 0 Unchecked, 17.50ms Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2256.73ms Time] [2021-11-07 16:39:54,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244922 states.