./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.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 c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 18:52:35,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 18:52:35,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 18:52:35,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 18:52:35,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 18:52:35,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 18:52:35,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 18:52:35,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 18:52:35,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 18:52:35,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 18:52:35,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 18:52:35,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 18:52:35,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 18:52:35,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 18:52:35,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 18:52:35,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 18:52:35,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 18:52:35,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 18:52:35,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 18:52:35,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 18:52:35,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 18:52:35,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 18:52:35,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 18:52:35,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 18:52:35,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 18:52:35,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 18:52:35,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 18:52:35,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 18:52:35,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 18:52:35,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 18:52:35,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 18:52:35,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 18:52:35,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 18:52:35,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 18:52:35,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 18:52:35,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 18:52:35,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 18:52:35,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 18:52:35,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 18:52:35,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 18:52:35,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 18:52:35,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 18:52:35,849 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 18:52:35,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 18:52:35,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 18:52:35,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 18:52:35,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 18:52:35,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 18:52:35,851 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 18:52:35,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 18:52:35,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 18:52:35,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 18:52:35,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 18:52:35,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 18:52:35,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 18:52:35,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 18:52:35,853 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 18:52:35,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 18:52:35,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 18:52:35,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 18:52:35,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 18:52:35,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 18:52:35,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 18:52:35,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 18:52:35,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 18:52:35,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 18:52:35,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 18:52:35,856 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 18:52:35,856 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 18:52:35,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 18:52:35,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 18:52:35,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 [2021-11-07 18:52:36,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 18:52:36,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 18:52:36,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 18:52:36,128 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 18:52:36,129 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 18:52:36,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-07 18:52:36,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4cfdafe/51e2caccde924e529672efda14e4ff72/FLAG4f3fa922b [2021-11-07 18:52:36,890 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 18:52:36,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-07 18:52:36,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4cfdafe/51e2caccde924e529672efda14e4ff72/FLAG4f3fa922b [2021-11-07 18:52:36,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4cfdafe/51e2caccde924e529672efda14e4ff72 [2021-11-07 18:52:36,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 18:52:36,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 18:52:36,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 18:52:36,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 18:52:36,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 18:52:36,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:52:36" (1/1) ... [2021-11-07 18:52:36,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e1a8e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:36, skipping insertion in model container [2021-11-07 18:52:36,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:52:36" (1/1) ... [2021-11-07 18:52:36,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 18:52:37,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 18:52:39,965 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2021-11-07 18:52:39,968 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2021-11-07 18:52:39,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 18:52:40,035 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 18:52:40,381 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2021-11-07 18:52:40,382 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2021-11-07 18:52:40,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 18:52:40,567 INFO L208 MainTranslator]: Completed translation [2021-11-07 18:52:40,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:40 WrapperNode [2021-11-07 18:52:40,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 18:52:40,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 18:52:40,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 18:52:40,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 18:52:40,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:40" (1/1) ... [2021-11-07 18:52:40,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:40" (1/1) ... [2021-11-07 18:52:41,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 18:52:41,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 18:52:41,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 18:52:41,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 18:52:41,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:40" (1/1) ... [2021-11-07 18:52:41,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:40" (1/1) ... [2021-11-07 18:52:41,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:40" (1/1) ... [2021-11-07 18:52:41,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:40" (1/1) ... [2021-11-07 18:52:41,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:40" (1/1) ... [2021-11-07 18:52:41,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:40" (1/1) ... [2021-11-07 18:52:41,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:40" (1/1) ... [2021-11-07 18:52:41,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 18:52:41,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 18:52:41,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 18:52:41,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 18:52:41,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:40" (1/1) ... [2021-11-07 18:52:41,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 18:52:41,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 18:52:41,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 18:52:41,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 18:52:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 18:52:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 18:52:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 18:52:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 18:52:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 18:52:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 18:52:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 18:52:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 18:52:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 18:52:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 18:52:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 18:52:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 18:53:23,158 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 18:53:23,159 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 18:53:23,159 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 18:53:23,190 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 18:53:23,190 INFO L299 CfgBuilder]: Removed 3506 assume(true) statements. [2021-11-07 18:53:23,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:53:23 BoogieIcfgContainer [2021-11-07 18:53:23,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 18:53:23,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 18:53:23,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 18:53:23,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 18:53:23,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:52:36" (1/3) ... [2021-11-07 18:53:23,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3afa38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:53:23, skipping insertion in model container [2021-11-07 18:53:23,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:40" (2/3) ... [2021-11-07 18:53:23,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3afa38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:53:23, skipping insertion in model container [2021-11-07 18:53:23,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:53:23" (3/3) ... [2021-11-07 18:53:23,203 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-07 18:53:23,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 18:53:23,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-07 18:53:23,263 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 18:53:23,269 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 18:53:23,269 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-07 18:53:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 3071 states, 3059 states have (on average 1.3481529911735861) internal successors, (4124), 3070 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:23,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-07 18:53:23,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:53:23,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:53:23,371 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 18:53:23,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:53:23,379 INFO L85 PathProgramCache]: Analyzing trace with hash 889027765, now seen corresponding path program 1 times [2021-11-07 18:53:23,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:53:23,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581949214] [2021-11-07 18:53:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:53:23,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:53:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:53:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:53:24,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:53:24,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581949214] [2021-11-07 18:53:24,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581949214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:53:24,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:53:24,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:53:24,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973419239] [2021-11-07 18:53:24,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:53:24,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:53:24,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:53:24,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:53:24,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:24,293 INFO L87 Difference]: Start difference. First operand has 3071 states, 3059 states have (on average 1.3481529911735861) internal successors, (4124), 3070 states have internal predecessors, (4124), 0 states have call successors, (0), 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 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:26,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:53:26,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:53:26,854 INFO L93 Difference]: Finished difference Result 8241 states and 11065 transitions. [2021-11-07 18:53:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:53:26,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2021-11-07 18:53:26,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:53:26,888 INFO L225 Difference]: With dead ends: 8241 [2021-11-07 18:53:26,888 INFO L226 Difference]: Without dead ends: 4970 [2021-11-07 18:53:26,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:26,901 INFO L933 BasicCegarLoop]: 4069 mSDtfsCounter, 3137 mSDsluCounter, 4045 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2208.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3137 SdHoareTripleChecker+Valid, 8114 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.63ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2322.66ms IncrementalHoareTripleChecker+Time [2021-11-07 18:53:26,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3137 Valid, 8114 Invalid, 39 Unknown, 0 Unchecked, 24.63ms Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2322.66ms Time] [2021-11-07 18:53:26,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4970 states. [2021-11-07 18:53:27,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4970 to 4948. [2021-11-07 18:53:27,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4936 states have (on average 1.2870745542949757) internal successors, (6353), 4947 states have internal predecessors, (6353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:27,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 6353 transitions. [2021-11-07 18:53:27,070 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 6353 transitions. Word has length 155 [2021-11-07 18:53:27,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:53:27,071 INFO L470 AbstractCegarLoop]: Abstraction has 4948 states and 6353 transitions. [2021-11-07 18:53:27,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:27,072 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 6353 transitions. [2021-11-07 18:53:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 18:53:27,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:53:27,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:53:27,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 18:53:27,081 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 18:53:27,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:53:27,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1747966377, now seen corresponding path program 1 times [2021-11-07 18:53:27,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:53:27,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206821392] [2021-11-07 18:53:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:53:27,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:53:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:53:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:53:27,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:53:27,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206821392] [2021-11-07 18:53:27,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206821392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:53:27,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:53:27,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:53:27,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696687690] [2021-11-07 18:53:27,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:53:27,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:53:27,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:53:27,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:53:27,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:27,376 INFO L87 Difference]: Start difference. First operand 4948 states and 6353 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:29,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:53:29,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:53:29,982 INFO L93 Difference]: Finished difference Result 13984 states and 18005 transitions. [2021-11-07 18:53:29,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:53:29,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-07 18:53:29,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:53:30,021 INFO L225 Difference]: With dead ends: 13984 [2021-11-07 18:53:30,022 INFO L226 Difference]: Without dead ends: 9272 [2021-11-07 18:53:30,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:30,035 INFO L933 BasicCegarLoop]: 4050 mSDtfsCounter, 3012 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2186.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3012 SdHoareTripleChecker+Valid, 7585 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.72ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2332.34ms IncrementalHoareTripleChecker+Time [2021-11-07 18:53:30,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3012 Valid, 7585 Invalid, 39 Unknown, 0 Unchecked, 13.72ms Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2332.34ms Time] [2021-11-07 18:53:30,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9272 states. [2021-11-07 18:53:30,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9272 to 9244. [2021-11-07 18:53:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9244 states, 9232 states have (on average 1.2878032928942809) internal successors, (11889), 9243 states have internal predecessors, (11889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9244 states to 9244 states and 11889 transitions. [2021-11-07 18:53:30,281 INFO L78 Accepts]: Start accepts. Automaton has 9244 states and 11889 transitions. Word has length 156 [2021-11-07 18:53:30,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:53:30,285 INFO L470 AbstractCegarLoop]: Abstraction has 9244 states and 11889 transitions. [2021-11-07 18:53:30,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:30,285 INFO L276 IsEmpty]: Start isEmpty. Operand 9244 states and 11889 transitions. [2021-11-07 18:53:30,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-07 18:53:30,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:53:30,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:53:30,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 18:53:30,300 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 18:53:30,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:53:30,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1860394271, now seen corresponding path program 1 times [2021-11-07 18:53:30,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:53:30,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701013722] [2021-11-07 18:53:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:53:30,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:53:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:53:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:53:30,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:53:30,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701013722] [2021-11-07 18:53:30,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701013722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:53:30,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:53:30,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:53:30,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668154279] [2021-11-07 18:53:30,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:53:30,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:53:30,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:53:30,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:53:30,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:30,598 INFO L87 Difference]: Start difference. First operand 9244 states and 11889 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) 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) [2021-11-07 18:53:32,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:53:33,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:53:33,365 INFO L93 Difference]: Finished difference Result 26494 states and 34097 transitions. [2021-11-07 18:53:33,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:53:33,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) 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 157 [2021-11-07 18:53:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:53:33,443 INFO L225 Difference]: With dead ends: 26494 [2021-11-07 18:53:33,444 INFO L226 Difference]: Without dead ends: 17486 [2021-11-07 18:53:33,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:33,466 INFO L933 BasicCegarLoop]: 4316 mSDtfsCounter, 3012 mSDsluCounter, 3536 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2185.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3012 SdHoareTripleChecker+Valid, 7852 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.71ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2370.27ms IncrementalHoareTripleChecker+Time [2021-11-07 18:53:33,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3012 Valid, 7852 Invalid, 39 Unknown, 0 Unchecked, 12.71ms Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2370.27ms Time] [2021-11-07 18:53:33,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17486 states. [2021-11-07 18:53:33,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17486 to 17456. [2021-11-07 18:53:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17456 states, 17444 states have (on average 1.2860009172208209) internal successors, (22433), 17455 states have internal predecessors, (22433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17456 states to 17456 states and 22433 transitions. [2021-11-07 18:53:33,938 INFO L78 Accepts]: Start accepts. Automaton has 17456 states and 22433 transitions. Word has length 157 [2021-11-07 18:53:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:53:33,939 INFO L470 AbstractCegarLoop]: Abstraction has 17456 states and 22433 transitions. [2021-11-07 18:53:33,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) 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) [2021-11-07 18:53:33,940 INFO L276 IsEmpty]: Start isEmpty. Operand 17456 states and 22433 transitions. [2021-11-07 18:53:33,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-07 18:53:33,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:53:33,965 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:53:33,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 18:53:33,965 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 18:53:33,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:53:33,966 INFO L85 PathProgramCache]: Analyzing trace with hash -627285622, now seen corresponding path program 1 times [2021-11-07 18:53:33,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:53:33,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375313271] [2021-11-07 18:53:33,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:53:33,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:53:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:53:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:53:34,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:53:34,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375313271] [2021-11-07 18:53:34,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375313271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:53:34,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:53:34,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:53:34,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370543113] [2021-11-07 18:53:34,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:53:34,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:53:34,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:53:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:53:34,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:34,359 INFO L87 Difference]: Start difference. First operand 17456 states and 22433 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:36,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:53:36,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:53:36,977 INFO L93 Difference]: Finished difference Result 36436 states and 46827 transitions. [2021-11-07 18:53:36,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:53:36,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2021-11-07 18:53:36,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:53:37,034 INFO L225 Difference]: With dead ends: 36436 [2021-11-07 18:53:37,034 INFO L226 Difference]: Without dead ends: 19216 [2021-11-07 18:53:37,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:37,070 INFO L933 BasicCegarLoop]: 3557 mSDtfsCounter, 2246 mSDsluCounter, 3516 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2171.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 7073 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.77ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2296.20ms IncrementalHoareTripleChecker+Time [2021-11-07 18:53:37,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2246 Valid, 7073 Invalid, 28 Unknown, 0 Unchecked, 9.77ms Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2296.20ms Time] [2021-11-07 18:53:37,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19216 states. [2021-11-07 18:53:37,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19216 to 19208. [2021-11-07 18:53:37,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19208 states, 19196 states have (on average 1.2842258803917483) internal successors, (24652), 19207 states have internal predecessors, (24652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19208 states to 19208 states and 24652 transitions. [2021-11-07 18:53:37,670 INFO L78 Accepts]: Start accepts. Automaton has 19208 states and 24652 transitions. Word has length 169 [2021-11-07 18:53:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:53:37,670 INFO L470 AbstractCegarLoop]: Abstraction has 19208 states and 24652 transitions. [2021-11-07 18:53:37,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:37,671 INFO L276 IsEmpty]: Start isEmpty. Operand 19208 states and 24652 transitions. [2021-11-07 18:53:37,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-07 18:53:37,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:53:37,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:53:37,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 18:53:37,684 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 18:53:37,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:53:37,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1228263964, now seen corresponding path program 1 times [2021-11-07 18:53:37,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:53:37,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469751740] [2021-11-07 18:53:37,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:53:37,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:53:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:53:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:53:37,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:53:37,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469751740] [2021-11-07 18:53:37,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469751740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:53:37,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:53:37,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:53:37,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724643625] [2021-11-07 18:53:37,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:53:37,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:53:37,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:53:37,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:53:37,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:37,994 INFO L87 Difference]: Start difference. First operand 19208 states and 24652 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:40,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:53:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:53:40,846 INFO L93 Difference]: Finished difference Result 46888 states and 60314 transitions. [2021-11-07 18:53:40,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:53:40,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2021-11-07 18:53:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:53:40,930 INFO L225 Difference]: With dead ends: 46888 [2021-11-07 18:53:40,930 INFO L226 Difference]: Without dead ends: 27916 [2021-11-07 18:53:40,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:40,973 INFO L933 BasicCegarLoop]: 3553 mSDtfsCounter, 2063 mSDsluCounter, 3524 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2271.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 7077 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.20ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2408.98ms IncrementalHoareTripleChecker+Time [2021-11-07 18:53:40,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2063 Valid, 7077 Invalid, 61 Unknown, 0 Unchecked, 8.20ms Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 2408.98ms Time] [2021-11-07 18:53:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27916 states. [2021-11-07 18:53:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27916 to 27868. [2021-11-07 18:53:41,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27868 states, 27856 states have (on average 1.2850732337736932) internal successors, (35797), 27867 states have internal predecessors, (35797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:41,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27868 states to 27868 states and 35797 transitions. [2021-11-07 18:53:41,766 INFO L78 Accepts]: Start accepts. Automaton has 27868 states and 35797 transitions. Word has length 169 [2021-11-07 18:53:41,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:53:41,766 INFO L470 AbstractCegarLoop]: Abstraction has 27868 states and 35797 transitions. [2021-11-07 18:53:41,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 27868 states and 35797 transitions. [2021-11-07 18:53:41,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-07 18:53:41,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:53:41,798 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:53:41,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 18:53:41,798 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 18:53:41,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:53:41,799 INFO L85 PathProgramCache]: Analyzing trace with hash -102929217, now seen corresponding path program 1 times [2021-11-07 18:53:41,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:53:41,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116513672] [2021-11-07 18:53:41,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:53:41,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:53:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:53:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:53:42,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:53:42,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116513672] [2021-11-07 18:53:42,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116513672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:53:42,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:53:42,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:53:42,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614183788] [2021-11-07 18:53:42,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:53:42,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:53:42,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:53:42,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:53:42,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:42,036 INFO L87 Difference]: Start difference. First operand 27868 states and 35797 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:44,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:53:45,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:53:45,188 INFO L93 Difference]: Finished difference Result 80988 states and 104221 transitions. [2021-11-07 18:53:45,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:53:45,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 [2021-11-07 18:53:45,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:53:45,354 INFO L225 Difference]: With dead ends: 80988 [2021-11-07 18:53:45,355 INFO L226 Difference]: Without dead ends: 54164 [2021-11-07 18:53:45,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:45,418 INFO L933 BasicCegarLoop]: 5580 mSDtfsCounter, 3241 mSDsluCounter, 3542 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2134.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3241 SdHoareTripleChecker+Valid, 9122 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.51ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2254.38ms IncrementalHoareTripleChecker+Time [2021-11-07 18:53:45,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3241 Valid, 9122 Invalid, 25 Unknown, 0 Unchecked, 8.51ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2254.38ms Time] [2021-11-07 18:53:45,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54164 states. [2021-11-07 18:53:46,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54164 to 54140. [2021-11-07 18:53:46,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54140 states, 54128 states have (on average 1.286376736624298) internal successors, (69629), 54139 states have internal predecessors, (69629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54140 states to 54140 states and 69629 transitions. [2021-11-07 18:53:46,810 INFO L78 Accepts]: Start accepts. Automaton has 54140 states and 69629 transitions. Word has length 192 [2021-11-07 18:53:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:53:46,811 INFO L470 AbstractCegarLoop]: Abstraction has 54140 states and 69629 transitions. [2021-11-07 18:53:46,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:46,811 INFO L276 IsEmpty]: Start isEmpty. Operand 54140 states and 69629 transitions. [2021-11-07 18:53:46,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-07 18:53:46,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:53:46,861 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:53:46,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 18:53:46,862 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 18:53:46,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:53:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash 137310529, now seen corresponding path program 1 times [2021-11-07 18:53:46,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:53:46,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258272850] [2021-11-07 18:53:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:53:46,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:53:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:53:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:53:47,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:53:47,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258272850] [2021-11-07 18:53:47,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258272850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:53:47,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:53:47,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:53:47,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268384199] [2021-11-07 18:53:47,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:53:47,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:53:47,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:53:47,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:53:47,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:47,135 INFO L87 Difference]: Start difference. First operand 54140 states and 69629 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:49,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:53:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:53:50,789 INFO L93 Difference]: Finished difference Result 133548 states and 171901 transitions. [2021-11-07 18:53:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:53:50,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 [2021-11-07 18:53:50,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:53:50,976 INFO L225 Difference]: With dead ends: 133548 [2021-11-07 18:53:50,977 INFO L226 Difference]: Without dead ends: 79537 [2021-11-07 18:53:51,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.15ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:51,067 INFO L933 BasicCegarLoop]: 6804 mSDtfsCounter, 3237 mSDsluCounter, 3546 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2153.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3237 SdHoareTripleChecker+Valid, 10350 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.12ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2281.88ms IncrementalHoareTripleChecker+Time [2021-11-07 18:53:51,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3237 Valid, 10350 Invalid, 26 Unknown, 0 Unchecked, 8.12ms Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2281.88ms Time] [2021-11-07 18:53:51,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79537 states. [2021-11-07 18:53:52,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79537 to 79513. [2021-11-07 18:53:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79513 states, 79501 states have (on average 1.2874051898718255) internal successors, (102350), 79512 states have internal predecessors, (102350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79513 states to 79513 states and 102350 transitions. [2021-11-07 18:53:52,879 INFO L78 Accepts]: Start accepts. Automaton has 79513 states and 102350 transitions. Word has length 192 [2021-11-07 18:53:52,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:53:52,880 INFO L470 AbstractCegarLoop]: Abstraction has 79513 states and 102350 transitions. [2021-11-07 18:53:52,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand 79513 states and 102350 transitions. [2021-11-07 18:53:52,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-07 18:53:52,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:53:52,921 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:53:52,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 18:53:52,922 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 18:53:52,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:53:52,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1795083664, now seen corresponding path program 1 times [2021-11-07 18:53:52,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:53:52,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974597972] [2021-11-07 18:53:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:53:52,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:53:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:53:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:53:53,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:53:53,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974597972] [2021-11-07 18:53:53,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974597972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:53:53,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:53:53,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:53:53,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216425118] [2021-11-07 18:53:53,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:53:53,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:53:53,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:53:53,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:53:53,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:53,469 INFO L87 Difference]: Start difference. First operand 79513 states and 102350 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:53:55,537 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:53:57,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:53:57,558 INFO L93 Difference]: Finished difference Result 186282 states and 240054 transitions. [2021-11-07 18:53:57,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:53:57,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2021-11-07 18:53:57,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:53:57,796 INFO L225 Difference]: With dead ends: 186282 [2021-11-07 18:53:57,797 INFO L226 Difference]: Without dead ends: 107813 [2021-11-07 18:53:58,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:53:58,050 INFO L933 BasicCegarLoop]: 5627 mSDtfsCounter, 2066 mSDsluCounter, 3509 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2220.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 9136 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.98ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2332.48ms IncrementalHoareTripleChecker+Time [2021-11-07 18:53:58,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2066 Valid, 9136 Invalid, 59 Unknown, 0 Unchecked, 6.98ms Time], IncrementalHoareTripleChecker [9 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 2332.48ms Time] [2021-11-07 18:53:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107813 states. [2021-11-07 18:54:00,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107813 to 107765. [2021-11-07 18:54:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107765 states, 107753 states have (on average 1.28733306729279) internal successors, (138714), 107764 states have internal predecessors, (138714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:54:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107765 states to 107765 states and 138714 transitions. [2021-11-07 18:54:00,368 INFO L78 Accepts]: Start accepts. Automaton has 107765 states and 138714 transitions. Word has length 205 [2021-11-07 18:54:00,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:54:00,368 INFO L470 AbstractCegarLoop]: Abstraction has 107765 states and 138714 transitions. [2021-11-07 18:54:00,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:54:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 107765 states and 138714 transitions. [2021-11-07 18:54:00,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-07 18:54:00,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:54:00,613 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:54:00,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 18:54:00,614 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 18:54:00,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:54:00,615 INFO L85 PathProgramCache]: Analyzing trace with hash -568426472, now seen corresponding path program 1 times [2021-11-07 18:54:00,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:54:00,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098865651] [2021-11-07 18:54:00,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:54:00,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:54:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:54:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 18:54:00,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:54:00,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098865651] [2021-11-07 18:54:00,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098865651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:54:00,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:54:00,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:54:00,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491455973] [2021-11-07 18:54:00,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:54:00,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:54:00,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:54:00,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:54:00,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:54:00,901 INFO L87 Difference]: Start difference. First operand 107765 states and 138714 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:54:02,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:54:05,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:54:05,623 INFO L93 Difference]: Finished difference Result 250062 states and 321967 transitions. [2021-11-07 18:54:05,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:54:05,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2021-11-07 18:54:05,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:54:05,955 INFO L225 Difference]: With dead ends: 250062 [2021-11-07 18:54:05,955 INFO L226 Difference]: Without dead ends: 142466 [2021-11-07 18:54:06,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:54:06,106 INFO L933 BasicCegarLoop]: 6804 mSDtfsCounter, 3235 mSDsluCounter, 3546 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2127.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3235 SdHoareTripleChecker+Valid, 10350 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2282.76ms IncrementalHoareTripleChecker+Time [2021-11-07 18:54:06,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3235 Valid, 10350 Invalid, 19 Unknown, 0 Unchecked, 9.27ms Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 2282.76ms Time] [2021-11-07 18:54:06,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142466 states. [2021-11-07 18:54:08,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142466 to 107765. [2021-11-07 18:54:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107765 states, 107753 states have (on average 1.28732378680872) internal successors, (138713), 107764 states have internal predecessors, (138713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:54:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107765 states to 107765 states and 138713 transitions. [2021-11-07 18:54:09,032 INFO L78 Accepts]: Start accepts. Automaton has 107765 states and 138713 transitions. Word has length 206 [2021-11-07 18:54:09,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:54:09,032 INFO L470 AbstractCegarLoop]: Abstraction has 107765 states and 138713 transitions. [2021-11-07 18:54:09,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:54:09,032 INFO L276 IsEmpty]: Start isEmpty. Operand 107765 states and 138713 transitions. [2021-11-07 18:54:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-07 18:54:09,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:54:09,071 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:54:09,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 18:54:09,072 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 18:54:09,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:54:09,072 INFO L85 PathProgramCache]: Analyzing trace with hash -328186726, now seen corresponding path program 1 times [2021-11-07 18:54:09,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:54:09,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990894854] [2021-11-07 18:54:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:54:09,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:54:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:54:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 18:54:09,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:54:09,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990894854] [2021-11-07 18:54:09,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990894854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:54:09,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:54:09,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:54:09,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247605430] [2021-11-07 18:54:09,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:54:09,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:54:09,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:54:09,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:54:09,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:54:09,393 INFO L87 Difference]: Start difference. First operand 107765 states and 138713 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:54:11,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:54:14,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:54:14,722 INFO L93 Difference]: Finished difference Result 261952 states and 336711 transitions. [2021-11-07 18:54:14,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:54:14,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 206 [2021-11-07 18:54:14,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:54:15,079 INFO L225 Difference]: With dead ends: 261952 [2021-11-07 18:54:15,080 INFO L226 Difference]: Without dead ends: 155231 [2021-11-07 18:54:15,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:54:15,227 INFO L933 BasicCegarLoop]: 5827 mSDtfsCounter, 2785 mSDsluCounter, 3532 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2194.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2785 SdHoareTripleChecker+Valid, 9359 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.91ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2300.51ms IncrementalHoareTripleChecker+Time [2021-11-07 18:54:15,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2785 Valid, 9359 Invalid, 37 Unknown, 0 Unchecked, 8.91ms Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 2300.51ms Time] [2021-11-07 18:54:15,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155231 states. [2021-11-07 18:54:18,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155231 to 155197. [2021-11-07 18:54:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155197 states, 155185 states have (on average 1.2829397171118342) internal successors, (199093), 155196 states have internal predecessors, (199093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:54:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155197 states to 155197 states and 199093 transitions. [2021-11-07 18:54:19,265 INFO L78 Accepts]: Start accepts. Automaton has 155197 states and 199093 transitions. Word has length 206 [2021-11-07 18:54:19,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:54:19,266 INFO L470 AbstractCegarLoop]: Abstraction has 155197 states and 199093 transitions. [2021-11-07 18:54:19,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:54:19,266 INFO L276 IsEmpty]: Start isEmpty. Operand 155197 states and 199093 transitions. [2021-11-07 18:54:19,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-07 18:54:19,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:54:19,314 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:54:19,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 18:54:19,314 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 18:54:19,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:54:19,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1625944476, now seen corresponding path program 1 times [2021-11-07 18:54:19,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:54:19,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541770605] [2021-11-07 18:54:19,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:54:19,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:54:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:54:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 18:54:19,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:54:19,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541770605] [2021-11-07 18:54:19,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541770605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:54:19,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:54:19,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:54:19,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962808440] [2021-11-07 18:54:19,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:54:19,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:54:19,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:54:19,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:54:19,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:54:19,616 INFO L87 Difference]: Start difference. First operand 155197 states and 199093 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:54:21,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:54:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:54:26,302 INFO L93 Difference]: Finished difference Result 381658 states and 489379 transitions. [2021-11-07 18:54:26,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:54:26,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 207 [2021-11-07 18:54:26,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:54:26,895 INFO L225 Difference]: With dead ends: 381658 [2021-11-07 18:54:26,895 INFO L226 Difference]: Without dead ends: 227505 [2021-11-07 18:54:27,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.88ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:54:27,107 INFO L933 BasicCegarLoop]: 5829 mSDtfsCounter, 3012 mSDsluCounter, 3533 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2192.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3012 SdHoareTripleChecker+Valid, 9362 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.45ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2307.14ms IncrementalHoareTripleChecker+Time [2021-11-07 18:54:27,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3012 Valid, 9362 Invalid, 37 Unknown, 0 Unchecked, 8.45ms Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 2307.14ms Time] [2021-11-07 18:54:27,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227505 states.