./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-alteon-acenic.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-alteon-acenic.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 c26285c798d9eae93470e6619d316c691c81cc1a0579ebf111c5d2cbbd8c7126 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 19:52:17,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:52:17,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:52:17,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:52:17,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:52:17,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:52:17,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:52:17,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:52:17,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:52:17,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:52:17,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:52:17,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:52:17,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:52:17,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:52:17,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:52:17,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:52:17,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:52:17,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:52:17,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:52:17,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:52:17,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:52:17,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:52:17,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:52:17,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:52:17,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:52:17,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:52:17,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:52:17,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:52:17,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:52:17,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:52:17,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:52:17,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:52:17,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:52:17,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:52:17,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:52:17,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:52:17,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:52:17,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:52:17,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:52:17,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:52:17,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:52:17,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 19:52:18,002 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:52:18,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:52:18,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:52:18,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:52:18,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:52:18,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:52:18,005 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:52:18,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:52:18,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 19:52:18,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:52:18,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:52:18,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:52:18,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:52:18,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:52:18,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:52:18,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:52:18,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:52:18,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:52:18,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:52:18,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:52:18,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:52:18,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:52:18,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:52:18,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 19:52:18,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 19:52:18,008 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:52:18,008 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:52:18,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:52:18,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:52:18,009 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c26285c798d9eae93470e6619d316c691c81cc1a0579ebf111c5d2cbbd8c7126 [2021-11-05 19:52:18,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:52:18,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:52:18,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:52:18,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:52:18,270 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:52:18,274 INFO L432 ainManager$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-alteon-acenic.cil.i [2021-11-05 19:52:18,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93943d55/7aa350c589264de9a8b12be4f003a55c/FLAG30c626d3c [2021-11-05 19:52:19,013 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:52:19,014 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-alteon-acenic.cil.i [2021-11-05 19:52:19,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93943d55/7aa350c589264de9a8b12be4f003a55c/FLAG30c626d3c [2021-11-05 19:52:19,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93943d55/7aa350c589264de9a8b12be4f003a55c [2021-11-05 19:52:19,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:52:19,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:52:19,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:52:19,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:52:19,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:52:19,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:52:19" (1/1) ... [2021-11-05 19:52:19,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ca33f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:19, skipping insertion in model container [2021-11-05 19:52:19,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:52:19" (1/1) ... [2021-11-05 19:52:19,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:52:19,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:52:21,721 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-alteon-acenic.cil.i[373388,373401] [2021-11-05 19:52:21,724 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-alteon-acenic.cil.i[373533,373546] [2021-11-05 19:52:21,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:52:21,777 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:52:22,139 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-alteon-acenic.cil.i[373388,373401] [2021-11-05 19:52:22,140 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-alteon-acenic.cil.i[373533,373546] [2021-11-05 19:52:22,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:52:22,342 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:52:22,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:22 WrapperNode [2021-11-05 19:52:22,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:52:22,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:52:22,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:52:22,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:52:22,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:22" (1/1) ... [2021-11-05 19:52:22,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:22" (1/1) ... [2021-11-05 19:52:23,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:52:23,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:52:23,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:52:23,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:52:23,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:22" (1/1) ... [2021-11-05 19:52:23,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:22" (1/1) ... [2021-11-05 19:52:23,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:22" (1/1) ... [2021-11-05 19:52:23,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:22" (1/1) ... [2021-11-05 19:52:23,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:22" (1/1) ... [2021-11-05 19:52:23,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:22" (1/1) ... [2021-11-05 19:52:23,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:22" (1/1) ... [2021-11-05 19:52:23,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:52:23,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:52:23,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:52:23,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:52:23,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:22" (1/1) ... [2021-11-05 19:52:23,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:52:23,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:52:23,716 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) [2021-11-05 19:52:23,756 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 [2021-11-05 19:52:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:52:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 19:52:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 19:52:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 19:52:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:52:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:52:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:52:23,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:52:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:52:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:52:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:52:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:52:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:52:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 19:52:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 19:52:42,894 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-05 19:52:42,895 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-05 19:52:42,895 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-05 19:52:42,895 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 19:52:42,896 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 19:52:42,896 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 19:52:42,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 19:52:42,922 INFO L299 CfgBuilder]: Removed 4615 assume(true) statements. [2021-11-05 19:52:42,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:52:42 BoogieIcfgContainer [2021-11-05 19:52:42,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 19:52:42,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 19:52:42,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 19:52:42,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 19:52:42,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:52:19" (1/3) ... [2021-11-05 19:52:42,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afc0825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:52:42, skipping insertion in model container [2021-11-05 19:52:42,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:22" (2/3) ... [2021-11-05 19:52:42,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afc0825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:52:42, skipping insertion in model container [2021-11-05 19:52:42,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:52:42" (3/3) ... [2021-11-05 19:52:42,935 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-05 19:52:42,939 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 19:52:42,939 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-05 19:52:42,987 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 19:52:42,991 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 [2021-11-05 19:52:42,991 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-05 19:52:43,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 3860 states, 3850 states have (on average 1.32) internal successors, (5082), 3859 states have internal predecessors, (5082), 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) [2021-11-05 19:52:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 19:52:43,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:52:43,056 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] [2021-11-05 19:52:43,057 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:52:43,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:52:43,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1237024553, now seen corresponding path program 1 times [2021-11-05 19:52:43,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:52:43,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480297138] [2021-11-05 19:52:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:52:43,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:52:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:52:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:52:43,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:52:43,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480297138] [2021-11-05 19:52:43,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480297138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:52:43,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:52:43,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:52:43,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648870898] [2021-11-05 19:52:43,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:52:43,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:52:43,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:52:43,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:52:43,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:52:43,742 INFO L87 Difference]: Start difference. First operand has 3860 states, 3850 states have (on average 1.32) internal successors, (5082), 3859 states have internal predecessors, (5082), 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 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-05 19:52:45,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:46,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:52:46,292 INFO L93 Difference]: Finished difference Result 10547 states and 13876 transitions. [2021-11-05 19:52:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:52:46,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-05 19:52:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:52:46,334 INFO L225 Difference]: With dead ends: 10547 [2021-11-05 19:52:46,334 INFO L226 Difference]: Without dead ends: 6523 [2021-11-05 19:52:46,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:52:46,352 INFO L933 BasicCegarLoop]: 4947 mSDtfsCounter, 4301 mSDsluCounter, 4306 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2224.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 9253 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.40ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2337.10ms IncrementalHoareTripleChecker+Time [2021-11-05 19:52:46,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4301 Valid, 9253 Invalid, 65 Unknown, 0 Unchecked, 22.40ms Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 1 Unknown, 0 Unchecked, 2337.10ms Time] [2021-11-05 19:52:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2021-11-05 19:52:46,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6338. [2021-11-05 19:52:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6338 states, 6328 states have (on average 1.277496839443742) internal successors, (8084), 6337 states have internal predecessors, (8084), 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) [2021-11-05 19:52:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6338 states to 6338 states and 8084 transitions. [2021-11-05 19:52:46,549 INFO L78 Accepts]: Start accepts. Automaton has 6338 states and 8084 transitions. Word has length 51 [2021-11-05 19:52:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:52:46,549 INFO L470 AbstractCegarLoop]: Abstraction has 6338 states and 8084 transitions. [2021-11-05 19:52:46,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-05 19:52:46,550 INFO L276 IsEmpty]: Start isEmpty. Operand 6338 states and 8084 transitions. [2021-11-05 19:52:46,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-05 19:52:46,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:52:46,552 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] [2021-11-05 19:52:46,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 19:52:46,553 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:52:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:52:46,553 INFO L85 PathProgramCache]: Analyzing trace with hash 503253660, now seen corresponding path program 1 times [2021-11-05 19:52:46,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:52:46,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186910902] [2021-11-05 19:52:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:52:46,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:52:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:52:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:52:46,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:52:46,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186910902] [2021-11-05 19:52:46,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186910902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:52:46,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:52:46,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:52:46,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293676683] [2021-11-05 19:52:46,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:52:46,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:52:46,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:52:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:52:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:52:46,748 INFO L87 Difference]: Start difference. First operand 6338 states and 8084 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-05 19:52:48,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:52:49,441 INFO L93 Difference]: Finished difference Result 13834 states and 17772 transitions. [2021-11-05 19:52:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:52:49,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-11-05 19:52:49,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:52:49,465 INFO L225 Difference]: With dead ends: 13834 [2021-11-05 19:52:49,465 INFO L226 Difference]: Without dead ends: 7548 [2021-11-05 19:52:49,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:52:49,480 INFO L933 BasicCegarLoop]: 5284 mSDtfsCounter, 1081 mSDsluCounter, 4693 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2228.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 9977 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.85ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2386.30ms IncrementalHoareTripleChecker+Time [2021-11-05 19:52:49,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 9977 Invalid, 88 Unknown, 0 Unchecked, 9.85ms Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2386.30ms Time] [2021-11-05 19:52:49,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7548 states. [2021-11-05 19:52:49,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7548 to 7532. [2021-11-05 19:52:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7532 states, 7522 states have (on average 1.2898165381547462) internal successors, (9702), 7531 states have internal predecessors, (9702), 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) [2021-11-05 19:52:49,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 9702 transitions. [2021-11-05 19:52:49,659 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 9702 transitions. Word has length 58 [2021-11-05 19:52:49,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:52:49,660 INFO L470 AbstractCegarLoop]: Abstraction has 7532 states and 9702 transitions. [2021-11-05 19:52:49,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-05 19:52:49,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 9702 transitions. [2021-11-05 19:52:49,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-05 19:52:49,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:52:49,667 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] [2021-11-05 19:52:49,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 19:52:49,667 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:52:49,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:52:49,668 INFO L85 PathProgramCache]: Analyzing trace with hash 329388047, now seen corresponding path program 1 times [2021-11-05 19:52:49,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:52:49,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611022691] [2021-11-05 19:52:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:52:49,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:52:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:52:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:52:49,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:52:49,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611022691] [2021-11-05 19:52:49,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611022691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:52:49,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:52:49,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:52:49,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829345022] [2021-11-05 19:52:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:52:49,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:52:49,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:52:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:52:49,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:52:49,858 INFO L87 Difference]: Start difference. First operand 7532 states and 9702 transitions. Second operand has 3 states, 3 states have (on average 20.0) 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) [2021-11-05 19:52:51,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:52,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:52:52,393 INFO L93 Difference]: Finished difference Result 21124 states and 27109 transitions. [2021-11-05 19:52:52,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:52:52,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) 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 [2021-11-05 19:52:52,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:52:52,451 INFO L225 Difference]: With dead ends: 21124 [2021-11-05 19:52:52,452 INFO L226 Difference]: Without dead ends: 13644 [2021-11-05 19:52:52,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:52:52,479 INFO L933 BasicCegarLoop]: 4736 mSDtfsCounter, 4204 mSDsluCounter, 4716 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2150.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 9452 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.02ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2303.99ms IncrementalHoareTripleChecker+Time [2021-11-05 19:52:52,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4204 Valid, 9452 Invalid, 47 Unknown, 0 Unchecked, 10.02ms Time], IncrementalHoareTripleChecker [15 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2303.99ms Time] [2021-11-05 19:52:52,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13644 states. [2021-11-05 19:52:52,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13644 to 13598. [2021-11-05 19:52:52,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13598 states, 13588 states have (on average 1.2815719752722992) internal successors, (17414), 13597 states have internal predecessors, (17414), 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) [2021-11-05 19:52:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13598 states to 13598 states and 17414 transitions. [2021-11-05 19:52:52,842 INFO L78 Accepts]: Start accepts. Automaton has 13598 states and 17414 transitions. Word has length 60 [2021-11-05 19:52:52,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:52:52,843 INFO L470 AbstractCegarLoop]: Abstraction has 13598 states and 17414 transitions. [2021-11-05 19:52:52,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) 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) [2021-11-05 19:52:52,843 INFO L276 IsEmpty]: Start isEmpty. Operand 13598 states and 17414 transitions. [2021-11-05 19:52:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 19:52:52,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:52:52,845 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] [2021-11-05 19:52:52,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 19:52:52,845 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:52:52,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:52:52,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1208918593, now seen corresponding path program 1 times [2021-11-05 19:52:52,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:52:52,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608386850] [2021-11-05 19:52:52,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:52:52,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:52:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:52:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:52:53,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:52:53,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608386850] [2021-11-05 19:52:53,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608386850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:52:53,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:52:53,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:52:53,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368338227] [2021-11-05 19:52:53,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:52:53,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:52:53,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:52:53,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:52:53,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:52:53,032 INFO L87 Difference]: Start difference. First operand 13598 states and 17414 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-11-05 19:52:55,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:55,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:52:55,683 INFO L93 Difference]: Finished difference Result 28880 states and 37150 transitions. [2021-11-05 19:52:55,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:52:55,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-05 19:52:55,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:52:55,716 INFO L225 Difference]: With dead ends: 28880 [2021-11-05 19:52:55,716 INFO L226 Difference]: Without dead ends: 15334 [2021-11-05 19:52:55,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:52:55,738 INFO L933 BasicCegarLoop]: 5755 mSDtfsCounter, 1087 mSDsluCounter, 4678 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2219.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 10433 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.00ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2394.80ms IncrementalHoareTripleChecker+Time [2021-11-05 19:52:55,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 10433 Invalid, 88 Unknown, 0 Unchecked, 10.00ms Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2394.80ms Time] [2021-11-05 19:52:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15334 states. [2021-11-05 19:52:56,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15334 to 15310. [2021-11-05 19:52:56,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15310 states, 15300 states have (on average 1.2887581699346404) internal successors, (19718), 15309 states have internal predecessors, (19718), 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) [2021-11-05 19:52:56,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15310 states to 15310 states and 19718 transitions. [2021-11-05 19:52:56,147 INFO L78 Accepts]: Start accepts. Automaton has 15310 states and 19718 transitions. Word has length 86 [2021-11-05 19:52:56,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:52:56,148 INFO L470 AbstractCegarLoop]: Abstraction has 15310 states and 19718 transitions. [2021-11-05 19:52:56,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-11-05 19:52:56,149 INFO L276 IsEmpty]: Start isEmpty. Operand 15310 states and 19718 transitions. [2021-11-05 19:52:56,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-05 19:52:56,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:52:56,151 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-05 19:52:56,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 19:52:56,151 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:52:56,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:52:56,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1985663429, now seen corresponding path program 1 times [2021-11-05 19:52:56,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:52:56,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303218820] [2021-11-05 19:52:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:52:56,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:52:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:52:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:52:56,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:52:56,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303218820] [2021-11-05 19:52:56,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303218820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:52:56,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:52:56,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:52:56,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413871309] [2021-11-05 19:52:56,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:52:56,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:52:56,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:52:56,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:52:56,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:52:56,352 INFO L87 Difference]: Start difference. First operand 15310 states and 19718 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-05 19:52:58,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:58,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:52:58,912 INFO L93 Difference]: Finished difference Result 32304 states and 41758 transitions. [2021-11-05 19:52:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:52:58,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 123 [2021-11-05 19:52:58,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:52:58,947 INFO L225 Difference]: With dead ends: 32304 [2021-11-05 19:52:58,948 INFO L226 Difference]: Without dead ends: 17046 [2021-11-05 19:52:58,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:52:58,973 INFO L933 BasicCegarLoop]: 4725 mSDtfsCounter, 3365 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2210.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3365 SdHoareTripleChecker+Valid, 7140 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.42ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2337.57ms IncrementalHoareTripleChecker+Time [2021-11-05 19:52:58,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3365 Valid, 7140 Invalid, 89 Unknown, 0 Unchecked, 7.42ms Time], IncrementalHoareTripleChecker [26 Valid, 62 Invalid, 1 Unknown, 0 Unchecked, 2337.57ms Time] [2021-11-05 19:52:58,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17046 states. [2021-11-05 19:52:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17046 to 17022. [2021-11-05 19:52:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17022 states, 17012 states have (on average 1.2954385139901246) internal successors, (22038), 17021 states have internal predecessors, (22038), 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) [2021-11-05 19:52:59,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17022 states to 17022 states and 22038 transitions. [2021-11-05 19:52:59,324 INFO L78 Accepts]: Start accepts. Automaton has 17022 states and 22038 transitions. Word has length 123 [2021-11-05 19:52:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:52:59,325 INFO L470 AbstractCegarLoop]: Abstraction has 17022 states and 22038 transitions. [2021-11-05 19:52:59,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-05 19:52:59,326 INFO L276 IsEmpty]: Start isEmpty. Operand 17022 states and 22038 transitions. [2021-11-05 19:52:59,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-05 19:52:59,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:52:59,330 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-05 19:52:59,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 19:52:59,330 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:52:59,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:52:59,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1682777854, now seen corresponding path program 1 times [2021-11-05 19:52:59,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:52:59,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963531054] [2021-11-05 19:52:59,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:52:59,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:52:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:52:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:52:59,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:52:59,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963531054] [2021-11-05 19:52:59,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963531054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:52:59,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:52:59,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:52:59,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452857471] [2021-11-05 19:52:59,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:52:59,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:52:59,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:52:59,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:52:59,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:52:59,523 INFO L87 Difference]: Start difference. First operand 17022 states and 22038 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-11-05 19:53:01,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:02,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:02,059 INFO L93 Difference]: Finished difference Result 35708 states and 46318 transitions. [2021-11-05 19:53:02,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:02,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 150 [2021-11-05 19:53:02,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:02,090 INFO L225 Difference]: With dead ends: 35708 [2021-11-05 19:53:02,090 INFO L226 Difference]: Without dead ends: 18738 [2021-11-05 19:53:02,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.88ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:53:02,114 INFO L933 BasicCegarLoop]: 5823 mSDtfsCounter, 1072 mSDsluCounter, 4691 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2185.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 10514 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.77ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2317.27ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:02,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 10514 Invalid, 69 Unknown, 0 Unchecked, 6.77ms Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 1 Unknown, 0 Unchecked, 2317.27ms Time] [2021-11-05 19:53:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18738 states. [2021-11-05 19:53:02,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18738 to 18714. [2021-11-05 19:53:02,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18714 states, 18704 states have (on average 1.2999358426005132) internal successors, (24314), 18713 states have internal predecessors, (24314), 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) [2021-11-05 19:53:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18714 states to 18714 states and 24314 transitions. [2021-11-05 19:53:02,565 INFO L78 Accepts]: Start accepts. Automaton has 18714 states and 24314 transitions. Word has length 150 [2021-11-05 19:53:02,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:02,565 INFO L470 AbstractCegarLoop]: Abstraction has 18714 states and 24314 transitions. [2021-11-05 19:53:02,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-11-05 19:53:02,565 INFO L276 IsEmpty]: Start isEmpty. Operand 18714 states and 24314 transitions. [2021-11-05 19:53:02,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-05 19:53:02,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:02,569 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-05 19:53:02,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 19:53:02,569 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:02,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:02,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1737170752, now seen corresponding path program 1 times [2021-11-05 19:53:02,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:02,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394224314] [2021-11-05 19:53:02,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:02,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:02,760 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:53:02,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:02,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394224314] [2021-11-05 19:53:02,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394224314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:02,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:02,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:02,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089017129] [2021-11-05 19:53:02,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:02,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:53:02,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:02,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:53:02,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:53:02,763 INFO L87 Difference]: Start difference. First operand 18714 states and 24314 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-11-05 19:53:04,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:05,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:05,320 INFO L93 Difference]: Finished difference Result 39104 states and 50894 transitions. [2021-11-05 19:53:05,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:05,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 150 [2021-11-05 19:53:05,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:05,356 INFO L225 Difference]: With dead ends: 39104 [2021-11-05 19:53:05,356 INFO L226 Difference]: Without dead ends: 20442 [2021-11-05 19:53:05,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:53:05,382 INFO L933 BasicCegarLoop]: 5823 mSDtfsCounter, 3316 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2183.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3316 SdHoareTripleChecker+Valid, 8271 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.59ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2301.84ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:05,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3316 Valid, 8271 Invalid, 75 Unknown, 0 Unchecked, 5.59ms Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2301.84ms Time] [2021-11-05 19:53:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20442 states. [2021-11-05 19:53:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20442 to 20418. [2021-11-05 19:53:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20418 states, 20408 states have (on average 1.3035084280674245) internal successors, (26602), 20417 states have internal predecessors, (26602), 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) [2021-11-05 19:53:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20418 states to 20418 states and 26602 transitions. [2021-11-05 19:53:05,765 INFO L78 Accepts]: Start accepts. Automaton has 20418 states and 26602 transitions. Word has length 150 [2021-11-05 19:53:05,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:05,766 INFO L470 AbstractCegarLoop]: Abstraction has 20418 states and 26602 transitions. [2021-11-05 19:53:05,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-11-05 19:53:05,766 INFO L276 IsEmpty]: Start isEmpty. Operand 20418 states and 26602 transitions. [2021-11-05 19:53:05,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-05 19:53:05,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:05,769 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:05,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 19:53:05,770 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:05,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:05,770 INFO L85 PathProgramCache]: Analyzing trace with hash -624067939, now seen corresponding path program 1 times [2021-11-05 19:53:05,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:05,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122187852] [2021-11-05 19:53:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:05,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-05 19:53:05,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:05,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122187852] [2021-11-05 19:53:05,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122187852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:05,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:05,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:53:05,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514061601] [2021-11-05 19:53:05,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:05,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:53:05,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:05,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:53:05,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:53:05,985 INFO L87 Difference]: Start difference. First operand 20418 states and 26602 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2021-11-05 19:53:08,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:09,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:09,132 INFO L93 Difference]: Finished difference Result 62750 states and 81858 transitions. [2021-11-05 19:53:09,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:53:09,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 191 [2021-11-05 19:53:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:09,199 INFO L225 Difference]: With dead ends: 62750 [2021-11-05 19:53:09,199 INFO L226 Difference]: Without dead ends: 42384 [2021-11-05 19:53:09,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.96ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:53:09,238 INFO L933 BasicCegarLoop]: 8955 mSDtfsCounter, 7701 mSDsluCounter, 13147 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2353.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7701 SdHoareTripleChecker+Valid, 22102 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.39ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2510.37ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:09,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7701 Valid, 22102 Invalid, 134 Unknown, 0 Unchecked, 21.39ms Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 1 Unknown, 0 Unchecked, 2510.37ms Time] [2021-11-05 19:53:09,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42384 states. [2021-11-05 19:53:09,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42384 to 22090. [2021-11-05 19:53:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22090 states, 22080 states have (on average 1.3069746376811595) internal successors, (28858), 22089 states have internal predecessors, (28858), 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) [2021-11-05 19:53:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22090 states to 22090 states and 28858 transitions. [2021-11-05 19:53:09,788 INFO L78 Accepts]: Start accepts. Automaton has 22090 states and 28858 transitions. Word has length 191 [2021-11-05 19:53:09,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:09,788 INFO L470 AbstractCegarLoop]: Abstraction has 22090 states and 28858 transitions. [2021-11-05 19:53:09,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2021-11-05 19:53:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand 22090 states and 28858 transitions. [2021-11-05 19:53:09,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-05 19:53:09,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:09,792 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:09,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 19:53:09,792 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:09,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:09,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1101324440, now seen corresponding path program 1 times [2021-11-05 19:53:09,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:09,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073540005] [2021-11-05 19:53:09,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:09,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-05 19:53:09,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:09,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073540005] [2021-11-05 19:53:09,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073540005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:09,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:09,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:53:09,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750278542] [2021-11-05 19:53:09,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:09,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:53:09,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:09,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:53:09,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:53:09,988 INFO L87 Difference]: Start difference. First operand 22090 states and 28858 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2021-11-05 19:53:12,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:13,261 INFO L93 Difference]: Finished difference Result 66114 states and 86410 transitions. [2021-11-05 19:53:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:53:13,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 192 [2021-11-05 19:53:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:13,331 INFO L225 Difference]: With dead ends: 66114 [2021-11-05 19:53:13,331 INFO L226 Difference]: Without dead ends: 44076 [2021-11-05 19:53:13,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.20ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:53:13,367 INFO L933 BasicCegarLoop]: 9389 mSDtfsCounter, 6837 mSDsluCounter, 14019 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2313.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6837 SdHoareTripleChecker+Valid, 23408 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.31ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2463.89ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:13,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6837 Valid, 23408 Invalid, 144 Unknown, 0 Unchecked, 19.31ms Time], IncrementalHoareTripleChecker [12 Valid, 131 Invalid, 1 Unknown, 0 Unchecked, 2463.89ms Time] [2021-11-05 19:53:13,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44076 states. [2021-11-05 19:53:13,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44076 to 23782. [2021-11-05 19:53:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23782 states, 23772 states have (on average 1.3096920747097425) internal successors, (31134), 23781 states have internal predecessors, (31134), 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) [2021-11-05 19:53:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23782 states to 23782 states and 31134 transitions. [2021-11-05 19:53:13,969 INFO L78 Accepts]: Start accepts. Automaton has 23782 states and 31134 transitions. Word has length 192 [2021-11-05 19:53:13,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:13,969 INFO L470 AbstractCegarLoop]: Abstraction has 23782 states and 31134 transitions. [2021-11-05 19:53:13,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2021-11-05 19:53:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 23782 states and 31134 transitions. [2021-11-05 19:53:13,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-05 19:53:13,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:13,973 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:13,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 19:53:13,973 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:13,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:13,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1781150462, now seen corresponding path program 1 times [2021-11-05 19:53:13,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:13,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850463057] [2021-11-05 19:53:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:13,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-05 19:53:14,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:14,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850463057] [2021-11-05 19:53:14,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850463057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:14,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:14,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:53:14,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96137303] [2021-11-05 19:53:14,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:14,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:53:14,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:14,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:53:14,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:53:14,216 INFO L87 Difference]: Start difference. First operand 23782 states and 31134 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-11-05 19:53:16,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:17,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:17,458 INFO L93 Difference]: Finished difference Result 69494 states and 90966 transitions. [2021-11-05 19:53:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:53:17,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 193 [2021-11-05 19:53:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:17,536 INFO L225 Difference]: With dead ends: 69494 [2021-11-05 19:53:17,536 INFO L226 Difference]: Without dead ends: 45764 [2021-11-05 19:53:17,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.58ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:53:17,574 INFO L933 BasicCegarLoop]: 9396 mSDtfsCounter, 6823 mSDsluCounter, 14037 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2312.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6823 SdHoareTripleChecker+Valid, 23433 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.58ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2464.15ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:17,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6823 Valid, 23433 Invalid, 148 Unknown, 0 Unchecked, 14.58ms Time], IncrementalHoareTripleChecker [14 Valid, 133 Invalid, 1 Unknown, 0 Unchecked, 2464.15ms Time] [2021-11-05 19:53:17,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45764 states. [2021-11-05 19:53:18,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45764 to 25470. [2021-11-05 19:53:18,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25470 states, 25460 states have (on average 1.3120974076983503) internal successors, (33406), 25469 states have internal predecessors, (33406), 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) [2021-11-05 19:53:18,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25470 states to 25470 states and 33406 transitions. [2021-11-05 19:53:18,391 INFO L78 Accepts]: Start accepts. Automaton has 25470 states and 33406 transitions. Word has length 193 [2021-11-05 19:53:18,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:18,391 INFO L470 AbstractCegarLoop]: Abstraction has 25470 states and 33406 transitions. [2021-11-05 19:53:18,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-11-05 19:53:18,391 INFO L276 IsEmpty]: Start isEmpty. Operand 25470 states and 33406 transitions. [2021-11-05 19:53:18,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-05 19:53:18,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:18,395 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:18,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 19:53:18,395 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:18,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:18,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1539480625, now seen corresponding path program 1 times [2021-11-05 19:53:18,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:18,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088683521] [2021-11-05 19:53:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:18,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-05 19:53:18,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:18,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088683521] [2021-11-05 19:53:18,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088683521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:18,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:18,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:18,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395712190] [2021-11-05 19:53:18,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:18,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:53:18,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:18,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:53:18,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:53:18,556 INFO L87 Difference]: Start difference. First operand 25470 states and 33406 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-05 19:53:20,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:21,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:21,539 INFO L93 Difference]: Finished difference Result 52568 states and 69022 transitions. [2021-11-05 19:53:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:21,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 204 [2021-11-05 19:53:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:21,580 INFO L225 Difference]: With dead ends: 52568 [2021-11-05 19:53:21,580 INFO L226 Difference]: Without dead ends: 27150 [2021-11-05 19:53:21,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:53:21,607 INFO L933 BasicCegarLoop]: 5823 mSDtfsCounter, 1466 mSDsluCounter, 4297 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2174.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 10120 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.49ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2305.33ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:21,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 10120 Invalid, 61 Unknown, 0 Unchecked, 6.49ms Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 1 Unknown, 0 Unchecked, 2305.33ms Time] [2021-11-05 19:53:21,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27150 states. [2021-11-05 19:53:22,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27150 to 27118. [2021-11-05 19:53:22,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27118 states, 27108 states have (on average 1.3146672568983326) internal successors, (35638), 27117 states have internal predecessors, (35638), 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) [2021-11-05 19:53:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27118 states to 27118 states and 35638 transitions. [2021-11-05 19:53:22,329 INFO L78 Accepts]: Start accepts. Automaton has 27118 states and 35638 transitions. Word has length 204 [2021-11-05 19:53:22,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:22,330 INFO L470 AbstractCegarLoop]: Abstraction has 27118 states and 35638 transitions. [2021-11-05 19:53:22,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-05 19:53:22,330 INFO L276 IsEmpty]: Start isEmpty. Operand 27118 states and 35638 transitions. [2021-11-05 19:53:22,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-05 19:53:22,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:22,333 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:22,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 19:53:22,334 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:22,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:22,334 INFO L85 PathProgramCache]: Analyzing trace with hash 796349788, now seen corresponding path program 1 times [2021-11-05 19:53:22,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:22,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939188386] [2021-11-05 19:53:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:22,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-05 19:53:22,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:22,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939188386] [2021-11-05 19:53:22,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939188386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:22,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:22,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:22,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816015430] [2021-11-05 19:53:22,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:22,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:53:22,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:22,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:53:22,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:53:22,490 INFO L87 Difference]: Start difference. First operand 27118 states and 35638 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-05 19:53:24,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:25,457 INFO L93 Difference]: Finished difference Result 55892 states and 73542 transitions. [2021-11-05 19:53:25,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:25,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 211 [2021-11-05 19:53:25,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:25,505 INFO L225 Difference]: With dead ends: 55892 [2021-11-05 19:53:25,505 INFO L226 Difference]: Without dead ends: 28826 [2021-11-05 19:53:25,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:53:25,543 INFO L933 BasicCegarLoop]: 5823 mSDtfsCounter, 1084 mSDsluCounter, 4683 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2171.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 10506 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.01ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2326.37ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:25,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 10506 Invalid, 75 Unknown, 0 Unchecked, 6.01ms Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 1 Unknown, 0 Unchecked, 2326.37ms Time] [2021-11-05 19:53:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28826 states. [2021-11-05 19:53:26,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28826 to 28802. [2021-11-05 19:53:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28802 states, 28792 states have (on average 1.3165462628507918) internal successors, (37906), 28801 states have internal predecessors, (37906), 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) [2021-11-05 19:53:26,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28802 states to 28802 states and 37906 transitions. [2021-11-05 19:53:26,199 INFO L78 Accepts]: Start accepts. Automaton has 28802 states and 37906 transitions. Word has length 211 [2021-11-05 19:53:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:26,200 INFO L470 AbstractCegarLoop]: Abstraction has 28802 states and 37906 transitions. [2021-11-05 19:53:26,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-05 19:53:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand 28802 states and 37906 transitions. [2021-11-05 19:53:26,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-05 19:53:26,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:26,203 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:26,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 19:53:26,204 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:26,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash 74444505, now seen corresponding path program 1 times [2021-11-05 19:53:26,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:26,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475220656] [2021-11-05 19:53:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:26,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-05 19:53:26,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:26,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475220656] [2021-11-05 19:53:26,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475220656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:26,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:26,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:26,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94250520] [2021-11-05 19:53:26,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:26,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:53:26,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:26,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:53:26,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:53:26,376 INFO L87 Difference]: Start difference. First operand 28802 states and 37906 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-05 19:53:28,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:29,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:29,423 INFO L93 Difference]: Finished difference Result 59252 states and 78062 transitions. [2021-11-05 19:53:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:29,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 214 [2021-11-05 19:53:29,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:29,472 INFO L225 Difference]: With dead ends: 59252 [2021-11-05 19:53:29,472 INFO L226 Difference]: Without dead ends: 30502 [2021-11-05 19:53:29,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:53:29,504 INFO L933 BasicCegarLoop]: 5823 mSDtfsCounter, 1081 mSDsluCounter, 4684 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2213.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 10507 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.12ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2357.23ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:29,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 10507 Invalid, 71 Unknown, 0 Unchecked, 6.12ms Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 1 Unknown, 0 Unchecked, 2357.23ms Time] [2021-11-05 19:53:29,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30502 states. [2021-11-05 19:53:30,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30502 to 30478. [2021-11-05 19:53:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30478 states, 30468 states have (on average 1.318301168439018) internal successors, (40166), 30477 states have internal predecessors, (40166), 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) [2021-11-05 19:53:30,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30478 states to 30478 states and 40166 transitions. [2021-11-05 19:53:30,184 INFO L78 Accepts]: Start accepts. Automaton has 30478 states and 40166 transitions. Word has length 214 [2021-11-05 19:53:30,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:30,185 INFO L470 AbstractCegarLoop]: Abstraction has 30478 states and 40166 transitions. [2021-11-05 19:53:30,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-05 19:53:30,185 INFO L276 IsEmpty]: Start isEmpty. Operand 30478 states and 40166 transitions. [2021-11-05 19:53:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-05 19:53:30,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:30,189 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:30,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 19:53:30,189 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:30,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:30,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1549187511, now seen corresponding path program 1 times [2021-11-05 19:53:30,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:30,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970802368] [2021-11-05 19:53:30,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:30,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-11-05 19:53:30,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:30,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970802368] [2021-11-05 19:53:30,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970802368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:30,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:30,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:30,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094621918] [2021-11-05 19:53:30,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:30,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:53:30,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:30,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:53:30,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:53:30,393 INFO L87 Difference]: Start difference. First operand 30478 states and 40166 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2021-11-05 19:53:32,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:33,386 INFO L93 Difference]: Finished difference Result 62600 states and 82574 transitions. [2021-11-05 19:53:33,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:33,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 235 [2021-11-05 19:53:33,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:33,436 INFO L225 Difference]: With dead ends: 62600 [2021-11-05 19:53:33,436 INFO L226 Difference]: Without dead ends: 32174 [2021-11-05 19:53:33,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:53:33,475 INFO L933 BasicCegarLoop]: 5823 mSDtfsCounter, 1273 mSDsluCounter, 4491 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2160.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 10314 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.59ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2312.01ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:33,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1273 Valid, 10314 Invalid, 69 Unknown, 0 Unchecked, 5.59ms Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 1 Unknown, 0 Unchecked, 2312.01ms Time] [2021-11-05 19:53:33,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32174 states. [2021-11-05 19:53:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32174 to 32150. [2021-11-05 19:53:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.3199128811449907) internal successors, (42422), 32149 states have internal predecessors, (42422), 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) [2021-11-05 19:53:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 42422 transitions. [2021-11-05 19:53:34,168 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 42422 transitions. Word has length 235 [2021-11-05 19:53:34,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:34,168 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 42422 transitions. [2021-11-05 19:53:34,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2021-11-05 19:53:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 42422 transitions. [2021-11-05 19:53:34,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-05 19:53:34,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:34,172 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:34,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 19:53:34,172 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:34,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:34,173 INFO L85 PathProgramCache]: Analyzing trace with hash 623700801, now seen corresponding path program 1 times [2021-11-05 19:53:34,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:34,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677167535] [2021-11-05 19:53:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:34,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-05 19:53:34,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:34,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677167535] [2021-11-05 19:53:34,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677167535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:34,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:34,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:53:34,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826774683] [2021-11-05 19:53:34,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:34,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:53:34,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:34,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:53:34,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:53:34,437 INFO L87 Difference]: Start difference. First operand 32150 states and 42422 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 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) [2021-11-05 19:53:35,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:35,239 INFO L93 Difference]: Finished difference Result 64248 states and 84786 transitions. [2021-11-05 19:53:35,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:35,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 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 236 [2021-11-05 19:53:35,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:35,289 INFO L225 Difference]: With dead ends: 64248 [2021-11-05 19:53:35,289 INFO L226 Difference]: Without dead ends: 32150 [2021-11-05 19:53:35,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:53:35,325 INFO L933 BasicCegarLoop]: 4729 mSDtfsCounter, 4587 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4587 SdHoareTripleChecker+Valid, 4729 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.54ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.32ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:35,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4587 Valid, 4729 Invalid, 19 Unknown, 0 Unchecked, 4.54ms Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 32.32ms Time] [2021-11-05 19:53:35,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-05 19:53:35,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-05 19:53:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.3159303049159925) internal successors, (42294), 32149 states have internal predecessors, (42294), 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) [2021-11-05 19:53:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 42294 transitions. [2021-11-05 19:53:36,079 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 42294 transitions. Word has length 236 [2021-11-05 19:53:36,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:36,080 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 42294 transitions. [2021-11-05 19:53:36,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 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) [2021-11-05 19:53:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 42294 transitions. [2021-11-05 19:53:36,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-05 19:53:36,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:36,083 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:36,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 19:53:36,083 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:36,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2140168060, now seen corresponding path program 1 times [2021-11-05 19:53:36,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:36,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656933093] [2021-11-05 19:53:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:36,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-05 19:53:36,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:36,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656933093] [2021-11-05 19:53:36,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656933093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:36,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:36,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:36,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772541380] [2021-11-05 19:53:36,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:36,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:53:36,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:36,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:53:36,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:53:36,294 INFO L87 Difference]: Start difference. First operand 32150 states and 42294 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-11-05 19:53:37,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:37,282 INFO L93 Difference]: Finished difference Result 64248 states and 84530 transitions. [2021-11-05 19:53:37,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:37,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 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 237 [2021-11-05 19:53:37,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:37,334 INFO L225 Difference]: With dead ends: 64248 [2021-11-05 19:53:37,334 INFO L226 Difference]: Without dead ends: 32150 [2021-11-05 19:53:37,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:53:37,379 INFO L933 BasicCegarLoop]: 4709 mSDtfsCounter, 9304 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9304 SdHoareTripleChecker+Valid, 4709 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.66ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.20ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:37,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9304 Valid, 4709 Invalid, 30 Unknown, 0 Unchecked, 7.66ms Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 108.20ms Time] [2021-11-05 19:53:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-05 19:53:38,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-05 19:53:38,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.3119477286869945) internal successors, (42166), 32149 states have internal predecessors, (42166), 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) [2021-11-05 19:53:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 42166 transitions. [2021-11-05 19:53:38,386 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 42166 transitions. Word has length 237 [2021-11-05 19:53:38,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:38,386 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 42166 transitions. [2021-11-05 19:53:38,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-11-05 19:53:38,387 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 42166 transitions. [2021-11-05 19:53:38,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-05 19:53:38,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:38,390 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:38,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 19:53:38,390 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:38,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1920607876, now seen corresponding path program 1 times [2021-11-05 19:53:38,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:38,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101179762] [2021-11-05 19:53:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:38,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-05 19:53:38,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:38,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101179762] [2021-11-05 19:53:38,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101179762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:38,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:38,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:38,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9722613] [2021-11-05 19:53:38,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:38,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:53:38,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:38,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:53:38,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:53:38,611 INFO L87 Difference]: Start difference. First operand 32150 states and 42166 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-05 19:53:39,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:39,786 INFO L93 Difference]: Finished difference Result 64248 states and 84274 transitions. [2021-11-05 19:53:39,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:39,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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 238 [2021-11-05 19:53:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:39,839 INFO L225 Difference]: With dead ends: 64248 [2021-11-05 19:53:39,839 INFO L226 Difference]: Without dead ends: 32150 [2021-11-05 19:53:39,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:53:39,869 INFO L933 BasicCegarLoop]: 4699 mSDtfsCounter, 9283 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9283 SdHoareTripleChecker+Valid, 4699 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.76ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.04ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:39,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9283 Valid, 4699 Invalid, 30 Unknown, 0 Unchecked, 7.76ms Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 101.04ms Time] [2021-11-05 19:53:39,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-05 19:53:40,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-05 19:53:40,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.3079651524579963) internal successors, (42038), 32149 states have internal predecessors, (42038), 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) [2021-11-05 19:53:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 42038 transitions. [2021-11-05 19:53:40,900 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 42038 transitions. Word has length 238 [2021-11-05 19:53:40,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:40,900 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 42038 transitions. [2021-11-05 19:53:40,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-05 19:53:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 42038 transitions. [2021-11-05 19:53:40,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-05 19:53:40,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:40,904 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:40,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 19:53:40,904 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:40,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash 590939487, now seen corresponding path program 1 times [2021-11-05 19:53:40,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:40,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845625372] [2021-11-05 19:53:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:40,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-05 19:53:41,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:41,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845625372] [2021-11-05 19:53:41,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845625372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:41,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:41,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:41,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340061961] [2021-11-05 19:53:41,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:41,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:53:41,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:53:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:53:41,115 INFO L87 Difference]: Start difference. First operand 32150 states and 42038 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-05 19:53:42,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:42,276 INFO L93 Difference]: Finished difference Result 64248 states and 84018 transitions. [2021-11-05 19:53:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:42,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 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 239 [2021-11-05 19:53:42,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:42,332 INFO L225 Difference]: With dead ends: 64248 [2021-11-05 19:53:42,332 INFO L226 Difference]: Without dead ends: 32150 [2021-11-05 19:53:42,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:53:42,372 INFO L933 BasicCegarLoop]: 4689 mSDtfsCounter, 9262 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9262 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.38ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.78ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:42,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9262 Valid, 4689 Invalid, 30 Unknown, 0 Unchecked, 7.38ms Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 104.78ms Time] [2021-11-05 19:53:42,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-05 19:53:43,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-05 19:53:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.303982576228998) internal successors, (41910), 32149 states have internal predecessors, (41910), 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) [2021-11-05 19:53:43,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 41910 transitions. [2021-11-05 19:53:43,546 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 41910 transitions. Word has length 239 [2021-11-05 19:53:43,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:43,547 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 41910 transitions. [2021-11-05 19:53:43,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-05 19:53:43,547 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 41910 transitions. [2021-11-05 19:53:43,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-05 19:53:43,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:43,551 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:43,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 19:53:43,551 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:43,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:43,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1139645367, now seen corresponding path program 1 times [2021-11-05 19:53:43,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:43,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535892862] [2021-11-05 19:53:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:43,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-05 19:53:43,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:43,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535892862] [2021-11-05 19:53:43,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535892862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:43,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:43,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:43,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438940138] [2021-11-05 19:53:43,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:43,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:53:43,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:43,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:53:43,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:53:43,776 INFO L87 Difference]: Start difference. First operand 32150 states and 41910 transitions. Second operand has 4 states, 4 states have (on average 40.0) 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) [2021-11-05 19:53:45,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:45,018 INFO L93 Difference]: Finished difference Result 64248 states and 83762 transitions. [2021-11-05 19:53:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:45,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) 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 240 [2021-11-05 19:53:45,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:45,068 INFO L225 Difference]: With dead ends: 64248 [2021-11-05 19:53:45,069 INFO L226 Difference]: Without dead ends: 32150 [2021-11-05 19:53:45,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.96ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:53:45,101 INFO L933 BasicCegarLoop]: 4679 mSDtfsCounter, 9241 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9241 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.33ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.20ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:45,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9241 Valid, 4679 Invalid, 30 Unknown, 0 Unchecked, 7.33ms Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 94.20ms Time] [2021-11-05 19:53:45,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-05 19:53:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-05 19:53:46,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.3) internal successors, (41782), 32149 states have internal predecessors, (41782), 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) [2021-11-05 19:53:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 41782 transitions. [2021-11-05 19:53:46,150 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 41782 transitions. Word has length 240 [2021-11-05 19:53:46,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:46,151 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 41782 transitions. [2021-11-05 19:53:46,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) 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) [2021-11-05 19:53:46,151 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 41782 transitions. [2021-11-05 19:53:46,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-05 19:53:46,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:46,154 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:46,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 19:53:46,155 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:46,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:46,155 INFO L85 PathProgramCache]: Analyzing trace with hash 969807418, now seen corresponding path program 1 times [2021-11-05 19:53:46,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:46,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313162356] [2021-11-05 19:53:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:46,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-05 19:53:46,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:46,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313162356] [2021-11-05 19:53:46,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313162356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:46,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:46,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:46,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495208715] [2021-11-05 19:53:46,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:46,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:53:46,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:46,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:53:46,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:53:46,472 INFO L87 Difference]: Start difference. First operand 32150 states and 41782 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 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) [2021-11-05 19:53:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:47,912 INFO L93 Difference]: Finished difference Result 64248 states and 83506 transitions. [2021-11-05 19:53:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:47,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 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 241 [2021-11-05 19:53:47,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:47,970 INFO L225 Difference]: With dead ends: 64248 [2021-11-05 19:53:47,970 INFO L226 Difference]: Without dead ends: 32150 [2021-11-05 19:53:48,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:53:48,007 INFO L933 BasicCegarLoop]: 4669 mSDtfsCounter, 9220 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9220 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.07ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.46ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:48,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9220 Valid, 4669 Invalid, 30 Unknown, 0 Unchecked, 9.07ms Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 98.46ms Time] [2021-11-05 19:53:48,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-05 19:53:49,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-05 19:53:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.2960174237710018) internal successors, (41654), 32149 states have internal predecessors, (41654), 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) [2021-11-05 19:53:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 41654 transitions. [2021-11-05 19:53:49,287 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 41654 transitions. Word has length 241 [2021-11-05 19:53:49,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:49,287 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 41654 transitions. [2021-11-05 19:53:49,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 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) [2021-11-05 19:53:49,288 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 41654 transitions. [2021-11-05 19:53:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-05 19:53:49,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:49,291 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:49,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 19:53:49,292 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:49,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:49,292 INFO L85 PathProgramCache]: Analyzing trace with hash -52750, now seen corresponding path program 1 times [2021-11-05 19:53:49,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:49,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821573927] [2021-11-05 19:53:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:49,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-05 19:53:49,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:49,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821573927] [2021-11-05 19:53:49,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821573927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:49,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:49,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:49,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603927720] [2021-11-05 19:53:49,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:49,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:53:49,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:49,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:53:49,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:53:49,494 INFO L87 Difference]: Start difference. First operand 32150 states and 41654 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-05 19:53:50,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:50,899 INFO L93 Difference]: Finished difference Result 64248 states and 83250 transitions. [2021-11-05 19:53:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:50,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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 242 [2021-11-05 19:53:50,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:50,951 INFO L225 Difference]: With dead ends: 64248 [2021-11-05 19:53:50,951 INFO L226 Difference]: Without dead ends: 32150 [2021-11-05 19:53:50,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:53:50,990 INFO L933 BasicCegarLoop]: 4659 mSDtfsCounter, 9199 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9199 SdHoareTripleChecker+Valid, 4659 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.22ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.34ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:50,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9199 Valid, 4659 Invalid, 30 Unknown, 0 Unchecked, 7.22ms Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 93.34ms Time] [2021-11-05 19:53:51,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-05 19:53:52,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-05 19:53:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.2920348475420038) internal successors, (41526), 32149 states have internal predecessors, (41526), 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) [2021-11-05 19:53:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 41526 transitions. [2021-11-05 19:53:52,380 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 41526 transitions. Word has length 242 [2021-11-05 19:53:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:52,380 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 41526 transitions. [2021-11-05 19:53:52,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-05 19:53:52,381 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 41526 transitions. [2021-11-05 19:53:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-05 19:53:52,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:52,384 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:52,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 19:53:52,385 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:52,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash -797931, now seen corresponding path program 1 times [2021-11-05 19:53:52,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:52,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494076106] [2021-11-05 19:53:52,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:52,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:52,577 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-05 19:53:52,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:52,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494076106] [2021-11-05 19:53:52,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494076106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:52,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:52,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:52,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248397181] [2021-11-05 19:53:52,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:52,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:53:52,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:52,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:53:52,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:53:52,579 INFO L87 Difference]: Start difference. First operand 32150 states and 41526 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 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) [2021-11-05 19:53:54,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:54,304 INFO L93 Difference]: Finished difference Result 64248 states and 82994 transitions. [2021-11-05 19:53:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:54,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 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 243 [2021-11-05 19:53:54,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:54,359 INFO L225 Difference]: With dead ends: 64248 [2021-11-05 19:53:54,359 INFO L226 Difference]: Without dead ends: 32150 [2021-11-05 19:53:54,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:53:54,398 INFO L933 BasicCegarLoop]: 4649 mSDtfsCounter, 9178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9178 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.25ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.73ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:54,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9178 Valid, 4649 Invalid, 30 Unknown, 0 Unchecked, 7.25ms Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 92.73ms Time] [2021-11-05 19:53:54,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-05 19:53:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-05 19:53:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.2880522713130056) internal successors, (41398), 32149 states have internal predecessors, (41398), 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) [2021-11-05 19:53:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 41398 transitions. [2021-11-05 19:53:55,994 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 41398 transitions. Word has length 243 [2021-11-05 19:53:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:55,994 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 41398 transitions. [2021-11-05 19:53:55,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 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) [2021-11-05 19:53:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 41398 transitions. [2021-11-05 19:53:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-05 19:53:55,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:55,998 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:55,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 19:53:55,998 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:55,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash -23749587, now seen corresponding path program 1 times [2021-11-05 19:53:55,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:55,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230338407] [2021-11-05 19:53:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:55,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:56,198 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-05 19:53:56,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:56,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230338407] [2021-11-05 19:53:56,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230338407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:56,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:56,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:56,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752435906] [2021-11-05 19:53:56,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:56,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:53:56,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:56,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:53:56,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:53:56,200 INFO L87 Difference]: Start difference. First operand 32150 states and 41398 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-05 19:53:57,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:53:57,818 INFO L93 Difference]: Finished difference Result 64248 states and 82738 transitions. [2021-11-05 19:53:57,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:53:57,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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 244 [2021-11-05 19:53:57,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:53:57,867 INFO L225 Difference]: With dead ends: 64248 [2021-11-05 19:53:57,867 INFO L226 Difference]: Without dead ends: 32150 [2021-11-05 19:53:57,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:53:57,917 INFO L933 BasicCegarLoop]: 4639 mSDtfsCounter, 9157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9157 SdHoareTripleChecker+Valid, 4639 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.39ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.12ms IncrementalHoareTripleChecker+Time [2021-11-05 19:53:57,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9157 Valid, 4639 Invalid, 30 Unknown, 0 Unchecked, 7.39ms Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 95.12ms Time] [2021-11-05 19:53:57,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-05 19:53:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-05 19:53:59,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.2840696950840074) internal successors, (41270), 32149 states have internal predecessors, (41270), 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) [2021-11-05 19:53:59,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 41270 transitions. [2021-11-05 19:53:59,766 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 41270 transitions. Word has length 244 [2021-11-05 19:53:59,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:53:59,767 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 41270 transitions. [2021-11-05 19:53:59,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-05 19:53:59,767 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 41270 transitions. [2021-11-05 19:53:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-05 19:53:59,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:53:59,770 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:53:59,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 19:53:59,771 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:53:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:53:59,771 INFO L85 PathProgramCache]: Analyzing trace with hash -735101968, now seen corresponding path program 1 times [2021-11-05 19:53:59,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:53:59,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940115083] [2021-11-05 19:53:59,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:53:59,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:53:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:53:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-05 19:53:59,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:53:59,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940115083] [2021-11-05 19:53:59,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940115083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:53:59,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:53:59,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:53:59,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064867259] [2021-11-05 19:53:59,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:53:59,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:53:59,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:53:59,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:53:59,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:53:59,959 INFO L87 Difference]: Start difference. First operand 32150 states and 41270 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 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) [2021-11-05 19:54:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:54:01,749 INFO L93 Difference]: Finished difference Result 64248 states and 82482 transitions. [2021-11-05 19:54:01,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:54:01,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 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 245 [2021-11-05 19:54:01,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:54:01,800 INFO L225 Difference]: With dead ends: 64248 [2021-11-05 19:54:01,800 INFO L226 Difference]: Without dead ends: 32150 [2021-11-05 19:54:01,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:54:01,835 INFO L933 BasicCegarLoop]: 4629 mSDtfsCounter, 9136 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9136 SdHoareTripleChecker+Valid, 4629 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.29ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.76ms IncrementalHoareTripleChecker+Time [2021-11-05 19:54:01,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9136 Valid, 4629 Invalid, 30 Unknown, 0 Unchecked, 7.29ms Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 93.76ms Time] [2021-11-05 19:54:01,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-05 19:54:03,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-05 19:54:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.2800871188550094) internal successors, (41142), 32149 states have internal predecessors, (41142), 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) [2021-11-05 19:54:03,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 41142 transitions. [2021-11-05 19:54:03,530 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 41142 transitions. Word has length 245 [2021-11-05 19:54:03,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:54:03,530 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 41142 transitions. [2021-11-05 19:54:03,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 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) [2021-11-05 19:54:03,530 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 41142 transitions. [2021-11-05 19:54:03,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-05 19:54:03,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:54:03,534 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:54:03,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 19:54:03,534 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:54:03,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:54:03,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1312040344, now seen corresponding path program 1 times [2021-11-05 19:54:03,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:54:03,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564387627] [2021-11-05 19:54:03,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:54:03,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:54:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:54:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-05 19:54:03,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:54:03,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564387627] [2021-11-05 19:54:03,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564387627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:54:03,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:54:03,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:54:03,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921080977] [2021-11-05 19:54:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:54:03,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:54:03,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:54:03,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:54:03,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:54:03,849 INFO L87 Difference]: Start difference. First operand 32150 states and 41142 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 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) [2021-11-05 19:54:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:54:05,913 INFO L93 Difference]: Finished difference Result 64248 states and 82226 transitions. [2021-11-05 19:54:05,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:54:05,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 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 246 [2021-11-05 19:54:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:54:05,961 INFO L225 Difference]: With dead ends: 64248 [2021-11-05 19:54:05,961 INFO L226 Difference]: Without dead ends: 32150 [2021-11-05 19:54:05,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.65ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:54:05,988 INFO L933 BasicCegarLoop]: 4619 mSDtfsCounter, 9115 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9115 SdHoareTripleChecker+Valid, 4619 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.26ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.61ms IncrementalHoareTripleChecker+Time [2021-11-05 19:54:05,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9115 Valid, 4619 Invalid, 30 Unknown, 0 Unchecked, 9.26ms Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 98.61ms Time] [2021-11-05 19:54:06,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-05 19:54:07,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-05 19:54:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.2761045426260111) internal successors, (41014), 32149 states have internal predecessors, (41014), 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) [2021-11-05 19:54:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 41014 transitions. [2021-11-05 19:54:07,669 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 41014 transitions. Word has length 246 [2021-11-05 19:54:07,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:54:07,669 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 41014 transitions. [2021-11-05 19:54:07,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 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) [2021-11-05 19:54:07,670 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 41014 transitions. [2021-11-05 19:54:07,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-05 19:54:07,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:54:07,673 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:54:07,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 19:54:07,673 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-05 19:54:07,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:54:07,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2017111861, now seen corresponding path program 1 times [2021-11-05 19:54:07,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:54:07,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740435956] [2021-11-05 19:54:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:54:07,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:54:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:54:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-05 19:54:07,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:54:07,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740435956] [2021-11-05 19:54:07,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740435956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:54:07,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:54:07,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:54:07,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163032350] [2021-11-05 19:54:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:54:07,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:54:07,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:54:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:54:07,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:54:07,852 INFO L87 Difference]: Start difference. First operand 32150 states and 41014 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 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)