./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.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 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 00:26:59,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 00:26:59,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 00:26:59,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 00:26:59,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 00:26:59,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 00:26:59,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 00:26:59,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 00:26:59,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 00:26:59,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 00:26:59,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 00:26:59,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 00:26:59,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 00:26:59,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 00:26:59,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 00:26:59,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 00:26:59,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 00:26:59,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 00:26:59,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 00:26:59,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 00:26:59,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 00:26:59,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 00:26:59,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 00:26:59,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 00:26:59,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 00:26:59,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 00:26:59,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 00:26:59,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 00:26:59,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 00:26:59,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 00:26:59,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 00:26:59,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 00:26:59,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 00:26:59,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 00:26:59,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 00:26:59,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 00:26:59,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 00:26:59,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 00:26:59,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 00:26:59,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 00:26:59,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 00:26:59,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 00:26:59,913 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 00:26:59,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 00:26:59,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 00:26:59,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 00:26:59,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 00:26:59,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 00:26:59,916 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 00:26:59,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 00:26:59,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 00:26:59,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 00:26:59,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 00:26:59,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 00:26:59,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 00:26:59,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 00:26:59,918 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 00:26:59,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 00:26:59,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 00:26:59,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 00:26:59,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 00:26:59,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 00:26:59,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 00:26:59,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 00:26:59,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 00:26:59,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 00:26:59,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 00:26:59,920 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 00:26:59,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 00:26:59,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 00:26:59,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 00:26:59,922 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a [2021-11-03 00:27:00,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 00:27:00,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 00:27:00,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 00:27:00,159 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 00:27:00,160 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 00:27:00,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2021-11-03 00:27:00,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/545d2a202/ebd7403530824758bec33b9cd30fc9ef/FLAGf09cb3324 [2021-11-03 00:27:00,873 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 00:27:00,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2021-11-03 00:27:00,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/545d2a202/ebd7403530824758bec33b9cd30fc9ef/FLAGf09cb3324 [2021-11-03 00:27:01,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/545d2a202/ebd7403530824758bec33b9cd30fc9ef [2021-11-03 00:27:01,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 00:27:01,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 00:27:01,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 00:27:01,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 00:27:01,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 00:27:01,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:27:01" (1/1) ... [2021-11-03 00:27:01,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22576bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:27:01, skipping insertion in model container [2021-11-03 00:27:01,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:27:01" (1/1) ... [2021-11-03 00:27:01,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 00:27:01,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 00:27:02,460 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196376,196389] [2021-11-03 00:27:02,464 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196545,196558] [2021-11-03 00:27:02,464 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196712,196725] [2021-11-03 00:27:02,465 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196880,196893] [2021-11-03 00:27:02,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 00:27:02,500 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 00:27:02,711 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196376,196389] [2021-11-03 00:27:02,713 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196545,196558] [2021-11-03 00:27:02,713 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196712,196725] [2021-11-03 00:27:02,714 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196880,196893] [2021-11-03 00:27:02,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 00:27:02,785 INFO L208 MainTranslator]: Completed translation [2021-11-03 00:27:02,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:27:02 WrapperNode [2021-11-03 00:27:02,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 00:27:02,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 00:27:02,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 00:27:02,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 00:27:02,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:27:02" (1/1) ... [2021-11-03 00:27:02,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:27:02" (1/1) ... [2021-11-03 00:27:03,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 00:27:03,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 00:27:03,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 00:27:03,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 00:27:03,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:27:02" (1/1) ... [2021-11-03 00:27:03,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:27:02" (1/1) ... [2021-11-03 00:27:03,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:27:02" (1/1) ... [2021-11-03 00:27:03,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:27:02" (1/1) ... [2021-11-03 00:27:03,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:27:02" (1/1) ... [2021-11-03 00:27:03,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:27:02" (1/1) ... [2021-11-03 00:27:03,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:27:02" (1/1) ... [2021-11-03 00:27:03,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 00:27:03,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 00:27:03,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 00:27:03,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 00:27:03,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:27:02" (1/1) ... [2021-11-03 00:27:03,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 00:27:03,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 00:27:03,333 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) [2021-11-03 00:27:03,340 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 [2021-11-03 00:27:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 00:27:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 00:27:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 00:27:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 00:27:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-03 00:27:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 00:27:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 00:27:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 00:27:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 00:27:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 00:27:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 00:27:03,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 00:27:06,961 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-03 00:27:06,962 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 00:27:06,962 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-03 00:27:06,962 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-03 00:27:06,962 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-03 00:27:06,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 00:27:06,975 INFO L299 CfgBuilder]: Removed 2074 assume(true) statements. [2021-11-03 00:27:06,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:27:06 BoogieIcfgContainer [2021-11-03 00:27:06,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 00:27:06,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 00:27:06,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 00:27:06,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 00:27:06,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:27:01" (1/3) ... [2021-11-03 00:27:06,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aad5fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:27:06, skipping insertion in model container [2021-11-03 00:27:06,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:27:02" (2/3) ... [2021-11-03 00:27:06,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aad5fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:27:06, skipping insertion in model container [2021-11-03 00:27:06,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:27:06" (3/3) ... [2021-11-03 00:27:06,984 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2021-11-03 00:27:06,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 00:27:06,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2021-11-03 00:27:07,030 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 00:27:07,035 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 [2021-11-03 00:27:07,036 INFO L340 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2021-11-03 00:27:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 1566 states, 1526 states have (on average 1.2673656618610747) internal successors, (1934), 1565 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 00:27:07,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:27:07,073 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] [2021-11-03 00:27:07,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:27:07,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:27:07,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1159951444, now seen corresponding path program 1 times [2021-11-03 00:27:07,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:27:07,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249487666] [2021-11-03 00:27:07,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:27:07,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:27:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:27:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:27:07,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:27:07,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249487666] [2021-11-03 00:27:07,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249487666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:27:07,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:27:07,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:27:07,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138488401] [2021-11-03 00:27:07,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:27:07,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:27:07,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:27:07,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:27:07,609 INFO L87 Difference]: Start difference. First operand has 1566 states, 1526 states have (on average 1.2673656618610747) internal successors, (1934), 1565 states have internal predecessors, (1934), 0 states have call successors, (0), 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 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:08,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:27:09,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:27:16,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:27:17,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:27:17,172 INFO L93 Difference]: Finished difference Result 4330 states and 5364 transitions. [2021-11-03 00:27:17,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:27:17,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-03 00:27:17,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:27:17,193 INFO L225 Difference]: With dead ends: 4330 [2021-11-03 00:27:17,194 INFO L226 Difference]: Without dead ends: 2632 [2021-11-03 00:27:17,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.15ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:27:17,204 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 1535 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 3554 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8217.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 3558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.59ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3554 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9287.25ms IncrementalHoareTripleChecker+Time [2021-11-03 00:27:17,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1535 Valid, 189 Invalid, 3558 Unknown, 0 Unchecked, 19.59ms Time], IncrementalHoareTripleChecker [3 Valid, 3554 Invalid, 1 Unknown, 0 Unchecked, 9287.25ms Time] [2021-11-03 00:27:17,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2021-11-03 00:27:17,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2475. [2021-11-03 00:27:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 2435 states have (on average 1.2032854209445585) internal successors, (2930), 2474 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 2930 transitions. [2021-11-03 00:27:17,336 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 2930 transitions. Word has length 24 [2021-11-03 00:27:17,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:27:17,337 INFO L470 AbstractCegarLoop]: Abstraction has 2475 states and 2930 transitions. [2021-11-03 00:27:17,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:17,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 2930 transitions. [2021-11-03 00:27:17,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 00:27:17,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:27:17,344 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] [2021-11-03 00:27:17,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 00:27:17,345 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:27:17,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:27:17,347 INFO L85 PathProgramCache]: Analyzing trace with hash -258996078, now seen corresponding path program 1 times [2021-11-03 00:27:17,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:27:17,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981586730] [2021-11-03 00:27:17,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:27:17,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:27:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:27:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:27:17,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:27:17,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981586730] [2021-11-03 00:27:17,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981586730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:27:17,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:27:17,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:27:17,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340847391] [2021-11-03 00:27:17,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:27:17,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:27:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:27:17,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:27:17,522 INFO L87 Difference]: Start difference. First operand 2475 states and 2930 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:20,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:27:26,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:27:26,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:27:26,919 INFO L93 Difference]: Finished difference Result 4842 states and 5803 transitions. [2021-11-03 00:27:26,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:27:26,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-03 00:27:26,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:27:26,929 INFO L225 Difference]: With dead ends: 4842 [2021-11-03 00:27:26,929 INFO L226 Difference]: Without dead ends: 2395 [2021-11-03 00:27:26,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:27:26,934 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 649 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 3355 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8364.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.90ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3355 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9215.99ms IncrementalHoareTripleChecker+Time [2021-11-03 00:27:26,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 0 Invalid, 3373 Unknown, 0 Unchecked, 10.90ms Time], IncrementalHoareTripleChecker [17 Valid, 3355 Invalid, 1 Unknown, 0 Unchecked, 9215.99ms Time] [2021-11-03 00:27:26,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2021-11-03 00:27:26,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2317. [2021-11-03 00:27:26,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 2277 states have (on average 1.2362758014931927) internal successors, (2815), 2316 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2815 transitions. [2021-11-03 00:27:26,992 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2815 transitions. Word has length 36 [2021-11-03 00:27:26,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:27:26,993 INFO L470 AbstractCegarLoop]: Abstraction has 2317 states and 2815 transitions. [2021-11-03 00:27:26,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:27,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2815 transitions. [2021-11-03 00:27:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 00:27:27,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:27:27,004 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] [2021-11-03 00:27:27,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 00:27:27,005 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:27:27,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:27:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash 849800372, now seen corresponding path program 1 times [2021-11-03 00:27:27,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:27:27,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305693013] [2021-11-03 00:27:27,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:27:27,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:27:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:27:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:27:27,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:27:27,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305693013] [2021-11-03 00:27:27,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305693013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:27:27,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:27:27,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:27:27,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447098045] [2021-11-03 00:27:27,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:27:27,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:27:27,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:27:27,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:27:27,168 INFO L87 Difference]: Start difference. First operand 2317 states and 2815 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:29,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:27:32,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:27:35,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:27:35,162 INFO L93 Difference]: Finished difference Result 5310 states and 6341 transitions. [2021-11-03 00:27:35,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:27:35,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-03 00:27:35,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:27:35,176 INFO L225 Difference]: With dead ends: 5310 [2021-11-03 00:27:35,177 INFO L226 Difference]: Without dead ends: 3021 [2021-11-03 00:27:35,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:27:35,181 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1017 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 3385 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7193.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.80ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3385 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7871.84ms IncrementalHoareTripleChecker+Time [2021-11-03 00:27:35,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1017 Valid, 0 Invalid, 3398 Unknown, 0 Unchecked, 7.80ms Time], IncrementalHoareTripleChecker [11 Valid, 3385 Invalid, 2 Unknown, 0 Unchecked, 7871.84ms Time] [2021-11-03 00:27:35,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2021-11-03 00:27:35,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2818. [2021-11-03 00:27:35,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2778 states have (on average 1.2062634989200864) internal successors, (3351), 2817 states have internal predecessors, (3351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:35,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 3351 transitions. [2021-11-03 00:27:35,266 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 3351 transitions. Word has length 46 [2021-11-03 00:27:35,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:27:35,266 INFO L470 AbstractCegarLoop]: Abstraction has 2818 states and 3351 transitions. [2021-11-03 00:27:35,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:35,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 3351 transitions. [2021-11-03 00:27:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 00:27:35,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:27:35,269 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] [2021-11-03 00:27:35,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 00:27:35,270 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:27:35,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:27:35,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1502608141, now seen corresponding path program 1 times [2021-11-03 00:27:35,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:27:35,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117389438] [2021-11-03 00:27:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:27:35,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:27:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:27:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:27:35,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:27:35,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117389438] [2021-11-03 00:27:35,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117389438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:27:35,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:27:35,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:27:35,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42067177] [2021-11-03 00:27:35,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:27:35,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:27:35,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:27:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:27:35,416 INFO L87 Difference]: Start difference. First operand 2818 states and 3351 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:40,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:27:43,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:27:43,793 INFO L93 Difference]: Finished difference Result 7818 states and 9307 transitions. [2021-11-03 00:27:43,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:27:43,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-03 00:27:43,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:27:43,810 INFO L225 Difference]: With dead ends: 7818 [2021-11-03 00:27:43,810 INFO L226 Difference]: Without dead ends: 5028 [2021-11-03 00:27:43,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:27:43,816 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1386 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7191.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.12ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3836 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8198.71ms IncrementalHoareTripleChecker+Time [2021-11-03 00:27:43,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1386 Valid, 0 Invalid, 3848 Unknown, 0 Unchecked, 7.12ms Time], IncrementalHoareTripleChecker [11 Valid, 3836 Invalid, 1 Unknown, 0 Unchecked, 8198.71ms Time] [2021-11-03 00:27:43,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2021-11-03 00:27:43,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4801. [2021-11-03 00:27:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4801 states, 4761 states have (on average 1.2100399075824406) internal successors, (5761), 4800 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4801 states to 4801 states and 5761 transitions. [2021-11-03 00:27:43,920 INFO L78 Accepts]: Start accepts. Automaton has 4801 states and 5761 transitions. Word has length 47 [2021-11-03 00:27:43,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:27:43,920 INFO L470 AbstractCegarLoop]: Abstraction has 4801 states and 5761 transitions. [2021-11-03 00:27:43,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:43,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4801 states and 5761 transitions. [2021-11-03 00:27:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 00:27:43,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:27:43,922 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-03 00:27:43,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 00:27:43,922 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:27:43,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:27:43,923 INFO L85 PathProgramCache]: Analyzing trace with hash -129293626, now seen corresponding path program 1 times [2021-11-03 00:27:43,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:27:43,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088267586] [2021-11-03 00:27:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:27:43,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:27:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:27:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:27:44,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:27:44,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088267586] [2021-11-03 00:27:44,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088267586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:27:44,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:27:44,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:27:44,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062349617] [2021-11-03 00:27:44,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:27:44,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:27:44,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:27:44,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:27:44,061 INFO L87 Difference]: Start difference. First operand 4801 states and 5761 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:46,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:27:50,442 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:27:52,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:27:52,718 INFO L93 Difference]: Finished difference Result 13833 states and 16657 transitions. [2021-11-03 00:27:52,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:27:52,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-03 00:27:52,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:27:52,758 INFO L225 Difference]: With dead ends: 13833 [2021-11-03 00:27:52,758 INFO L226 Difference]: Without dead ends: 9095 [2021-11-03 00:27:52,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:27:52,770 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1402 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 3908 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7705.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3908 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8414.36ms IncrementalHoareTripleChecker+Time [2021-11-03 00:27:52,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 0 Invalid, 3911 Unknown, 0 Unchecked, 5.76ms Time], IncrementalHoareTripleChecker [1 Valid, 3908 Invalid, 2 Unknown, 0 Unchecked, 8414.36ms Time] [2021-11-03 00:27:52,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9095 states. [2021-11-03 00:27:53,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9095 to 8924. [2021-11-03 00:27:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8924 states, 8884 states have (on average 1.2164565511031067) internal successors, (10807), 8923 states have internal predecessors, (10807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:53,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8924 states to 8924 states and 10807 transitions. [2021-11-03 00:27:53,034 INFO L78 Accepts]: Start accepts. Automaton has 8924 states and 10807 transitions. Word has length 49 [2021-11-03 00:27:53,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:27:53,035 INFO L470 AbstractCegarLoop]: Abstraction has 8924 states and 10807 transitions. [2021-11-03 00:27:53,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:53,035 INFO L276 IsEmpty]: Start isEmpty. Operand 8924 states and 10807 transitions. [2021-11-03 00:27:53,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 00:27:53,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:27:53,036 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-03 00:27:53,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 00:27:53,037 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:27:53,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:27:53,037 INFO L85 PathProgramCache]: Analyzing trace with hash 128871812, now seen corresponding path program 1 times [2021-11-03 00:27:53,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:27:53,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107971428] [2021-11-03 00:27:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:27:53,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:27:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:27:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 00:27:53,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:27:53,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107971428] [2021-11-03 00:27:53,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107971428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:27:53,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:27:53,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:27:53,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410474838] [2021-11-03 00:27:53,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:27:53,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:27:53,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:27:53,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:27:53,220 INFO L87 Difference]: Start difference. First operand 8924 states and 10807 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:27:56,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:00,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:04,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:28:04,391 INFO L93 Difference]: Finished difference Result 10480 states and 12568 transitions. [2021-11-03 00:28:04,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:28:04,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 49 [2021-11-03 00:28:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:28:04,421 INFO L225 Difference]: With dead ends: 10480 [2021-11-03 00:28:04,421 INFO L226 Difference]: Without dead ends: 10476 [2021-11-03 00:28:04,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:28:04,425 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 931 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 5039 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9744.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.34ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5039 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10929.21ms IncrementalHoareTripleChecker+Time [2021-11-03 00:28:04,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 0 Invalid, 5069 Unknown, 0 Unchecked, 15.34ms Time], IncrementalHoareTripleChecker [28 Valid, 5039 Invalid, 2 Unknown, 0 Unchecked, 10929.21ms Time] [2021-11-03 00:28:04,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10476 states. [2021-11-03 00:28:04,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10476 to 10295. [2021-11-03 00:28:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10295 states, 10255 states have (on average 1.2081911262798635) internal successors, (12390), 10294 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10295 states to 10295 states and 12390 transitions. [2021-11-03 00:28:04,642 INFO L78 Accepts]: Start accepts. Automaton has 10295 states and 12390 transitions. Word has length 49 [2021-11-03 00:28:04,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:28:04,644 INFO L470 AbstractCegarLoop]: Abstraction has 10295 states and 12390 transitions. [2021-11-03 00:28:04,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:04,645 INFO L276 IsEmpty]: Start isEmpty. Operand 10295 states and 12390 transitions. [2021-11-03 00:28:04,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 00:28:04,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:28:04,646 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-03 00:28:04,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 00:28:04,647 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:28:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:28:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash -708106745, now seen corresponding path program 1 times [2021-11-03 00:28:04,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:28:04,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265207555] [2021-11-03 00:28:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:28:04,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:28:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:28:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 00:28:04,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:28:04,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265207555] [2021-11-03 00:28:04,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265207555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:28:04,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:28:04,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:28:04,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835100710] [2021-11-03 00:28:04,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:28:04,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:28:04,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:28:04,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:28:04,802 INFO L87 Difference]: Start difference. First operand 10295 states and 12390 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:06,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:08,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:12,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:15,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:28:15,805 INFO L93 Difference]: Finished difference Result 10476 states and 12564 transitions. [2021-11-03 00:28:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:28:15,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 00:28:15,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:28:15,821 INFO L225 Difference]: With dead ends: 10476 [2021-11-03 00:28:15,821 INFO L226 Difference]: Without dead ends: 10472 [2021-11-03 00:28:15,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.90ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:28:15,824 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 923 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 5040 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9525.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.04ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5040 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10755.19ms IncrementalHoareTripleChecker+Time [2021-11-03 00:28:15,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 0 Invalid, 5071 Unknown, 0 Unchecked, 12.04ms Time], IncrementalHoareTripleChecker [30 Valid, 5040 Invalid, 1 Unknown, 0 Unchecked, 10755.19ms Time] [2021-11-03 00:28:15,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10472 states. [2021-11-03 00:28:15,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10472 to 10299. [2021-11-03 00:28:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10299 states, 10259 states have (on average 1.2081099522370602) internal successors, (12394), 10298 states have internal predecessors, (12394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10299 states to 10299 states and 12394 transitions. [2021-11-03 00:28:16,019 INFO L78 Accepts]: Start accepts. Automaton has 10299 states and 12394 transitions. Word has length 51 [2021-11-03 00:28:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:28:16,019 INFO L470 AbstractCegarLoop]: Abstraction has 10299 states and 12394 transitions. [2021-11-03 00:28:16,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 10299 states and 12394 transitions. [2021-11-03 00:28:16,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 00:28:16,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:28:16,021 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-03 00:28:16,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 00:28:16,021 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:28:16,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:28:16,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1885615350, now seen corresponding path program 1 times [2021-11-03 00:28:16,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:28:16,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096813596] [2021-11-03 00:28:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:28:16,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:28:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:28:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 00:28:16,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:28:16,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096813596] [2021-11-03 00:28:16,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096813596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:28:16,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:28:16,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:28:16,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248127090] [2021-11-03 00:28:16,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:28:16,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:28:16,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:28:16,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:28:16,156 INFO L87 Difference]: Start difference. First operand 10299 states and 12394 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:18,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:22,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:25,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:28:25,990 INFO L93 Difference]: Finished difference Result 10472 states and 12560 transitions. [2021-11-03 00:28:25,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:28:25,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 53 [2021-11-03 00:28:25,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:28:26,011 INFO L225 Difference]: With dead ends: 10472 [2021-11-03 00:28:26,011 INFO L226 Difference]: Without dead ends: 10468 [2021-11-03 00:28:26,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:28:26,016 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 917 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 5040 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8385.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.21ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5040 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9629.92ms IncrementalHoareTripleChecker+Time [2021-11-03 00:28:26,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 0 Invalid, 5071 Unknown, 0 Unchecked, 10.21ms Time], IncrementalHoareTripleChecker [30 Valid, 5040 Invalid, 1 Unknown, 0 Unchecked, 9629.92ms Time] [2021-11-03 00:28:26,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10468 states. [2021-11-03 00:28:26,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10468 to 10303. [2021-11-03 00:28:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10303 states, 10263 states have (on average 1.2080288414693559) internal successors, (12398), 10302 states have internal predecessors, (12398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10303 states to 10303 states and 12398 transitions. [2021-11-03 00:28:26,249 INFO L78 Accepts]: Start accepts. Automaton has 10303 states and 12398 transitions. Word has length 53 [2021-11-03 00:28:26,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:28:26,250 INFO L470 AbstractCegarLoop]: Abstraction has 10303 states and 12398 transitions. [2021-11-03 00:28:26,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand 10303 states and 12398 transitions. [2021-11-03 00:28:26,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 00:28:26,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:28:26,252 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-03 00:28:26,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 00:28:26,253 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:28:26,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:28:26,253 INFO L85 PathProgramCache]: Analyzing trace with hash 399981709, now seen corresponding path program 1 times [2021-11-03 00:28:26,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:28:26,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147219925] [2021-11-03 00:28:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:28:26,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:28:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:28:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 00:28:26,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:28:26,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147219925] [2021-11-03 00:28:26,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147219925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:28:26,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:28:26,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:28:26,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224791311] [2021-11-03 00:28:26,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:28:26,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:28:26,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:28:26,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:28:26,408 INFO L87 Difference]: Start difference. First operand 10303 states and 12398 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:28,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:33,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:28:36,637 INFO L93 Difference]: Finished difference Result 16456 states and 19761 transitions. [2021-11-03 00:28:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:28:36,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 55 [2021-11-03 00:28:36,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:28:36,704 INFO L225 Difference]: With dead ends: 16456 [2021-11-03 00:28:36,704 INFO L226 Difference]: Without dead ends: 16452 [2021-11-03 00:28:36,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:28:36,708 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1393 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 5088 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8661.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.21ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 5088 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9946.40ms IncrementalHoareTripleChecker+Time [2021-11-03 00:28:36,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 0 Invalid, 5124 Unknown, 0 Unchecked, 10.21ms Time], IncrementalHoareTripleChecker [35 Valid, 5088 Invalid, 1 Unknown, 0 Unchecked, 9946.40ms Time] [2021-11-03 00:28:36,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16452 states. [2021-11-03 00:28:36,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16452 to 15953. [2021-11-03 00:28:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15953 states, 15913 states have (on average 1.2063093068560296) internal successors, (19196), 15952 states have internal predecessors, (19196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15953 states to 15953 states and 19196 transitions. [2021-11-03 00:28:37,054 INFO L78 Accepts]: Start accepts. Automaton has 15953 states and 19196 transitions. Word has length 55 [2021-11-03 00:28:37,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:28:37,054 INFO L470 AbstractCegarLoop]: Abstraction has 15953 states and 19196 transitions. [2021-11-03 00:28:37,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:37,055 INFO L276 IsEmpty]: Start isEmpty. Operand 15953 states and 19196 transitions. [2021-11-03 00:28:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 00:28:37,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:28:37,056 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:28:37,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 00:28:37,056 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:28:37,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:28:37,057 INFO L85 PathProgramCache]: Analyzing trace with hash 2130467472, now seen corresponding path program 1 times [2021-11-03 00:28:37,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:28:37,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283674263] [2021-11-03 00:28:37,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:28:37,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:28:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:28:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 00:28:37,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:28:37,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283674263] [2021-11-03 00:28:37,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283674263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:28:37,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:28:37,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:28:37,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574056284] [2021-11-03 00:28:37,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:28:37,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:28:37,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:28:37,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:28:37,215 INFO L87 Difference]: Start difference. First operand 15953 states and 19196 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:38,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:40,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:44,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:48,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:28:48,390 INFO L93 Difference]: Finished difference Result 16114 states and 19350 transitions. [2021-11-03 00:28:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:28:48,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 57 [2021-11-03 00:28:48,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:28:48,414 INFO L225 Difference]: With dead ends: 16114 [2021-11-03 00:28:48,415 INFO L226 Difference]: Without dead ends: 16110 [2021-11-03 00:28:48,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.08ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:28:48,419 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 905 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 5039 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9653.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.08ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5039 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10865.14ms IncrementalHoareTripleChecker+Time [2021-11-03 00:28:48,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 0 Invalid, 5071 Unknown, 0 Unchecked, 10.08ms Time], IncrementalHoareTripleChecker [30 Valid, 5039 Invalid, 2 Unknown, 0 Unchecked, 10865.14ms Time] [2021-11-03 00:28:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16110 states. [2021-11-03 00:28:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16110 to 15961. [2021-11-03 00:28:48,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15961 states, 15921 states have (on average 1.2062056403492243) internal successors, (19204), 15960 states have internal predecessors, (19204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15961 states to 15961 states and 19204 transitions. [2021-11-03 00:28:48,798 INFO L78 Accepts]: Start accepts. Automaton has 15961 states and 19204 transitions. Word has length 57 [2021-11-03 00:28:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:28:48,798 INFO L470 AbstractCegarLoop]: Abstraction has 15961 states and 19204 transitions. [2021-11-03 00:28:48,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:48,799 INFO L276 IsEmpty]: Start isEmpty. Operand 15961 states and 19204 transitions. [2021-11-03 00:28:48,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 00:28:48,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:28:48,800 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-03 00:28:48,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 00:28:48,801 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:28:48,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:28:48,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1320024813, now seen corresponding path program 1 times [2021-11-03 00:28:48,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:28:48,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25675593] [2021-11-03 00:28:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:28:48,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:28:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:28:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 00:28:48,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:28:48,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25675593] [2021-11-03 00:28:48,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25675593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:28:48,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:28:48,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:28:48,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360141167] [2021-11-03 00:28:48,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:28:48,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:28:48,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:28:48,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:28:48,960 INFO L87 Difference]: Start difference. First operand 15961 states and 19204 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:28:50,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:52,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:28:56,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:29:00,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:29:00,676 INFO L93 Difference]: Finished difference Result 26455 states and 32079 transitions. [2021-11-03 00:29:00,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:29:00,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 00:29:00,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:29:00,711 INFO L225 Difference]: With dead ends: 26455 [2021-11-03 00:29:00,711 INFO L226 Difference]: Without dead ends: 26451 [2021-11-03 00:29:00,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:29:00,718 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1105 mSDsluCounter, 3315 mSDsCounter, 0 mSdLazyCounter, 5400 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9865.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.24ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 5400 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11273.64ms IncrementalHoareTripleChecker+Time [2021-11-03 00:29:00,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 0 Invalid, 5438 Unknown, 0 Unchecked, 11.24ms Time], IncrementalHoareTripleChecker [37 Valid, 5400 Invalid, 1 Unknown, 0 Unchecked, 11273.64ms Time] [2021-11-03 00:29:00,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26451 states. [2021-11-03 00:29:01,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26451 to 23953. [2021-11-03 00:29:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23953 states, 23913 states have (on average 1.213565842846987) internal successors, (29020), 23952 states have internal predecessors, (29020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23953 states to 23953 states and 29020 transitions. [2021-11-03 00:29:01,237 INFO L78 Accepts]: Start accepts. Automaton has 23953 states and 29020 transitions. Word has length 59 [2021-11-03 00:29:01,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:29:01,237 INFO L470 AbstractCegarLoop]: Abstraction has 23953 states and 29020 transitions. [2021-11-03 00:29:01,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:01,238 INFO L276 IsEmpty]: Start isEmpty. Operand 23953 states and 29020 transitions. [2021-11-03 00:29:01,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 00:29:01,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:29:01,239 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-03 00:29:01,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 00:29:01,239 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:29:01,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:29:01,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1528357866, now seen corresponding path program 1 times [2021-11-03 00:29:01,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:29:01,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230094719] [2021-11-03 00:29:01,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:29:01,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:29:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:29:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 00:29:01,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:29:01,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230094719] [2021-11-03 00:29:01,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230094719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:29:01,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:29:01,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:29:01,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189871268] [2021-11-03 00:29:01,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:29:01,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:29:01,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:29:01,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:29:01,360 INFO L87 Difference]: Start difference. First operand 23953 states and 29020 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:03,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:29:07,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:29:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:29:11,730 INFO L93 Difference]: Finished difference Result 24098 states and 29158 transitions. [2021-11-03 00:29:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:29:11,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-03 00:29:11,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:29:11,757 INFO L225 Difference]: With dead ends: 24098 [2021-11-03 00:29:11,757 INFO L226 Difference]: Without dead ends: 24094 [2021-11-03 00:29:11,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:29:11,763 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 893 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 5038 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8911.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.76ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5038 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9987.33ms IncrementalHoareTripleChecker+Time [2021-11-03 00:29:11,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 0 Invalid, 5070 Unknown, 0 Unchecked, 10.76ms Time], IncrementalHoareTripleChecker [30 Valid, 5038 Invalid, 2 Unknown, 0 Unchecked, 9987.33ms Time] [2021-11-03 00:29:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24094 states. [2021-11-03 00:29:12,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24094 to 23961. [2021-11-03 00:29:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23961 states, 23921 states have (on average 1.213494419129635) internal successors, (29028), 23960 states have internal predecessors, (29028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23961 states to 23961 states and 29028 transitions. [2021-11-03 00:29:12,240 INFO L78 Accepts]: Start accepts. Automaton has 23961 states and 29028 transitions. Word has length 61 [2021-11-03 00:29:12,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:29:12,241 INFO L470 AbstractCegarLoop]: Abstraction has 23961 states and 29028 transitions. [2021-11-03 00:29:12,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 23961 states and 29028 transitions. [2021-11-03 00:29:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 00:29:12,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:29:12,243 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-03 00:29:12,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 00:29:12,243 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:29:12,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:29:12,244 INFO L85 PathProgramCache]: Analyzing trace with hash 127041433, now seen corresponding path program 1 times [2021-11-03 00:29:12,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:29:12,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721576516] [2021-11-03 00:29:12,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:29:12,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:29:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:29:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 00:29:12,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:29:12,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721576516] [2021-11-03 00:29:12,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721576516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:29:12,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:29:12,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:29:12,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111736710] [2021-11-03 00:29:12,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:29:12,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:29:12,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:29:12,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:29:12,371 INFO L87 Difference]: Start difference. First operand 23961 states and 29028 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:14,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:29:18,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:29:22,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:29:22,895 INFO L93 Difference]: Finished difference Result 24094 states and 29154 transitions. [2021-11-03 00:29:22,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:29:22,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-03 00:29:22,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:29:22,922 INFO L225 Difference]: With dead ends: 24094 [2021-11-03 00:29:22,922 INFO L226 Difference]: Without dead ends: 24012 [2021-11-03 00:29:22,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:29:22,928 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 885 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 5038 mSolverCounterSat, 32 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9087.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.16ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5038 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10082.77ms IncrementalHoareTripleChecker+Time [2021-11-03 00:29:22,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 0 Invalid, 5072 Unknown, 0 Unchecked, 11.16ms Time], IncrementalHoareTripleChecker [32 Valid, 5038 Invalid, 2 Unknown, 0 Unchecked, 10082.77ms Time] [2021-11-03 00:29:22,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24012 states. [2021-11-03 00:29:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24012 to 23887. [2021-11-03 00:29:23,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23887 states, 23847 states have (on average 1.213695643057827) internal successors, (28943), 23886 states have internal predecessors, (28943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23887 states to 23887 states and 28943 transitions. [2021-11-03 00:29:23,396 INFO L78 Accepts]: Start accepts. Automaton has 23887 states and 28943 transitions. Word has length 63 [2021-11-03 00:29:23,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:29:23,397 INFO L470 AbstractCegarLoop]: Abstraction has 23887 states and 28943 transitions. [2021-11-03 00:29:23,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:23,397 INFO L276 IsEmpty]: Start isEmpty. Operand 23887 states and 28943 transitions. [2021-11-03 00:29:23,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 00:29:23,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:29:23,399 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] [2021-11-03 00:29:23,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 00:29:23,400 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:29:23,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:29:23,400 INFO L85 PathProgramCache]: Analyzing trace with hash -228169881, now seen corresponding path program 1 times [2021-11-03 00:29:23,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:29:23,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064584510] [2021-11-03 00:29:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:29:23,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:29:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:29:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:29:23,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:29:23,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064584510] [2021-11-03 00:29:23,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064584510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:29:23,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:29:23,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:29:23,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380569934] [2021-11-03 00:29:23,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:29:23,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:29:23,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:29:23,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:29:23,538 INFO L87 Difference]: Start difference. First operand 23887 states and 28943 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:25,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:29:30,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:29:33,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:29:33,612 INFO L93 Difference]: Finished difference Result 52319 states and 64145 transitions. [2021-11-03 00:29:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:29:33,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-03 00:29:33,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:29:33,652 INFO L225 Difference]: With dead ends: 52319 [2021-11-03 00:29:33,653 INFO L226 Difference]: Without dead ends: 28495 [2021-11-03 00:29:33,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:29:33,686 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 655 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3905 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8417.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.92ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3905 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9391.42ms IncrementalHoareTripleChecker+Time [2021-11-03 00:29:33,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 0 Invalid, 3923 Unknown, 0 Unchecked, 7.92ms Time], IncrementalHoareTripleChecker [16 Valid, 3905 Invalid, 2 Unknown, 0 Unchecked, 9391.42ms Time] [2021-11-03 00:29:33,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28495 states. [2021-11-03 00:29:34,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28495 to 28287. [2021-11-03 00:29:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28287 states, 28247 states have (on average 1.2271037632314936) internal successors, (34662), 28286 states have internal predecessors, (34662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:34,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28287 states to 28287 states and 34662 transitions. [2021-11-03 00:29:34,208 INFO L78 Accepts]: Start accepts. Automaton has 28287 states and 34662 transitions. Word has length 64 [2021-11-03 00:29:34,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:29:34,208 INFO L470 AbstractCegarLoop]: Abstraction has 28287 states and 34662 transitions. [2021-11-03 00:29:34,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:34,208 INFO L276 IsEmpty]: Start isEmpty. Operand 28287 states and 34662 transitions. [2021-11-03 00:29:34,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-03 00:29:34,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:29:34,210 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:29:34,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 00:29:34,210 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:29:34,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:29:34,211 INFO L85 PathProgramCache]: Analyzing trace with hash -351100239, now seen corresponding path program 1 times [2021-11-03 00:29:34,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:29:34,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593178735] [2021-11-03 00:29:34,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:29:34,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:29:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:29:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 00:29:34,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:29:34,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593178735] [2021-11-03 00:29:34,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593178735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:29:34,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:29:34,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:29:34,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724935072] [2021-11-03 00:29:34,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:29:34,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:29:34,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:29:34,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:29:34,447 INFO L87 Difference]: Start difference. First operand 28287 states and 34662 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:36,498 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:29:41,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:29:44,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:29:44,637 INFO L93 Difference]: Finished difference Result 60949 states and 75244 transitions. [2021-11-03 00:29:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:29:44,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 99 [2021-11-03 00:29:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:29:44,684 INFO L225 Difference]: With dead ends: 60949 [2021-11-03 00:29:44,684 INFO L226 Difference]: Without dead ends: 32699 [2021-11-03 00:29:44,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:29:44,716 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 615 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8410.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.15ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9438.17ms IncrementalHoareTripleChecker+Time [2021-11-03 00:29:44,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 0 Invalid, 4023 Unknown, 0 Unchecked, 8.15ms Time], IncrementalHoareTripleChecker [11 Valid, 4010 Invalid, 2 Unknown, 0 Unchecked, 9438.17ms Time] [2021-11-03 00:29:44,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32699 states. [2021-11-03 00:29:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32699 to 32491. [2021-11-03 00:29:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32491 states, 32451 states have (on average 1.2360790114326214) internal successors, (40112), 32490 states have internal predecessors, (40112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:45,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32491 states to 32491 states and 40112 transitions. [2021-11-03 00:29:45,339 INFO L78 Accepts]: Start accepts. Automaton has 32491 states and 40112 transitions. Word has length 99 [2021-11-03 00:29:45,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:29:45,339 INFO L470 AbstractCegarLoop]: Abstraction has 32491 states and 40112 transitions. [2021-11-03 00:29:45,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:45,339 INFO L276 IsEmpty]: Start isEmpty. Operand 32491 states and 40112 transitions. [2021-11-03 00:29:45,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-03 00:29:45,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:29:45,341 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:29:45,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 00:29:45,342 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:29:45,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:29:45,342 INFO L85 PathProgramCache]: Analyzing trace with hash -485113745, now seen corresponding path program 1 times [2021-11-03 00:29:45,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:29:45,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936517560] [2021-11-03 00:29:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:29:45,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:29:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:29:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 00:29:45,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:29:45,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936517560] [2021-11-03 00:29:45,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936517560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:29:45,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:29:45,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:29:45,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381342053] [2021-11-03 00:29:45,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:29:45,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:29:45,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:29:45,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:29:45,458 INFO L87 Difference]: Start difference. First operand 32491 states and 40112 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:47,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:29:51,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:29:55,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:29:55,114 INFO L93 Difference]: Finished difference Result 69492 states and 86384 transitions. [2021-11-03 00:29:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:29:55,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 99 [2021-11-03 00:29:55,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:29:55,170 INFO L225 Difference]: With dead ends: 69492 [2021-11-03 00:29:55,171 INFO L226 Difference]: Without dead ends: 37064 [2021-11-03 00:29:55,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:29:55,214 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1004 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 3637 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7888.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.10ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3637 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8854.97ms IncrementalHoareTripleChecker+Time [2021-11-03 00:29:55,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1004 Valid, 0 Invalid, 3653 Unknown, 0 Unchecked, 6.10ms Time], IncrementalHoareTripleChecker [14 Valid, 3637 Invalid, 2 Unknown, 0 Unchecked, 8854.97ms Time] [2021-11-03 00:29:55,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37064 states. [2021-11-03 00:29:55,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37064 to 36823. [2021-11-03 00:29:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36823 states, 36783 states have (on average 1.2423130250387406) internal successors, (45696), 36822 states have internal predecessors, (45696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:56,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36823 states to 36823 states and 45696 transitions. [2021-11-03 00:29:56,042 INFO L78 Accepts]: Start accepts. Automaton has 36823 states and 45696 transitions. Word has length 99 [2021-11-03 00:29:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:29:56,042 INFO L470 AbstractCegarLoop]: Abstraction has 36823 states and 45696 transitions. [2021-11-03 00:29:56,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand 36823 states and 45696 transitions. [2021-11-03 00:29:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 00:29:56,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:29:56,045 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:29:56,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 00:29:56,045 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:29:56,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:29:56,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1338291001, now seen corresponding path program 1 times [2021-11-03 00:29:56,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:29:56,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007508401] [2021-11-03 00:29:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:29:56,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:29:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:29:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-03 00:29:56,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:29:56,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007508401] [2021-11-03 00:29:56,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007508401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:29:56,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:29:56,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:29:56,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509227840] [2021-11-03 00:29:56,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:29:56,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:29:56,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:29:56,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:29:56,183 INFO L87 Difference]: Start difference. First operand 36823 states and 45696 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:29:58,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:30:02,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:30:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:30:06,461 INFO L93 Difference]: Finished difference Result 78055 states and 97380 transitions. [2021-11-03 00:30:06,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:30:06,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 138 [2021-11-03 00:30:06,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:30:06,524 INFO L225 Difference]: With dead ends: 78055 [2021-11-03 00:30:06,524 INFO L226 Difference]: Without dead ends: 41295 [2021-11-03 00:30:06,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:30:06,574 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 618 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 3441 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8331.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.43ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3441 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9451.18ms IncrementalHoareTripleChecker+Time [2021-11-03 00:30:06,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 0 Invalid, 3453 Unknown, 0 Unchecked, 7.43ms Time], IncrementalHoareTripleChecker [10 Valid, 3441 Invalid, 2 Unknown, 0 Unchecked, 9451.18ms Time] [2021-11-03 00:30:06,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41295 states. [2021-11-03 00:30:07,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41295 to 41087. [2021-11-03 00:30:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41087 states, 41047 states have (on average 1.2476429458912954) internal successors, (51212), 41086 states have internal predecessors, (51212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:30:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41087 states to 41087 states and 51212 transitions. [2021-11-03 00:30:07,604 INFO L78 Accepts]: Start accepts. Automaton has 41087 states and 51212 transitions. Word has length 138 [2021-11-03 00:30:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:30:07,604 INFO L470 AbstractCegarLoop]: Abstraction has 41087 states and 51212 transitions. [2021-11-03 00:30:07,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:30:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 41087 states and 51212 transitions. [2021-11-03 00:30:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-03 00:30:07,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:30:07,607 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:30:07,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 00:30:07,608 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:30:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:30:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1472304507, now seen corresponding path program 1 times [2021-11-03 00:30:07,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:30:07,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30801966] [2021-11-03 00:30:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:30:07,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:30:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:30:07,722 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-03 00:30:07,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:30:07,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30801966] [2021-11-03 00:30:07,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30801966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:30:07,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:30:07,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:30:07,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590172162] [2021-11-03 00:30:07,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:30:07,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:30:07,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:30:07,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:30:07,724 INFO L87 Difference]: Start difference. First operand 41087 states and 51212 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:30:09,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:30:14,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:30:18,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:30:18,261 INFO L93 Difference]: Finished difference Result 86617 states and 108480 transitions. [2021-11-03 00:30:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:30:18,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 138 [2021-11-03 00:30:18,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:30:18,328 INFO L225 Difference]: With dead ends: 86617 [2021-11-03 00:30:18,328 INFO L226 Difference]: Without dead ends: 45593 [2021-11-03 00:30:18,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:30:18,365 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 627 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 4004 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8444.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.15ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4004 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9527.27ms IncrementalHoareTripleChecker+Time [2021-11-03 00:30:18,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 0 Invalid, 4017 Unknown, 0 Unchecked, 7.15ms Time], IncrementalHoareTripleChecker [11 Valid, 4004 Invalid, 2 Unknown, 0 Unchecked, 9527.27ms Time] [2021-11-03 00:30:18,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45593 states. [2021-11-03 00:30:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45593 to 45385. [2021-11-03 00:30:19,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45385 states, 45345 states have (on average 1.2517807917080164) internal successors, (56762), 45384 states have internal predecessors, (56762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:30:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45385 states to 45385 states and 56762 transitions. [2021-11-03 00:30:19,336 INFO L78 Accepts]: Start accepts. Automaton has 45385 states and 56762 transitions. Word has length 138 [2021-11-03 00:30:19,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:30:19,336 INFO L470 AbstractCegarLoop]: Abstraction has 45385 states and 56762 transitions. [2021-11-03 00:30:19,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:30:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 45385 states and 56762 transitions. [2021-11-03 00:30:19,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-03 00:30:19,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:30:19,339 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:30:19,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 00:30:19,339 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:30:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:30:19,340 INFO L85 PathProgramCache]: Analyzing trace with hash -665923043, now seen corresponding path program 1 times [2021-11-03 00:30:19,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:30:19,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195638615] [2021-11-03 00:30:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:30:19,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:30:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:30:19,485 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 00:30:19,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:30:19,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195638615] [2021-11-03 00:30:19,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195638615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:30:19,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:30:19,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 00:30:19,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118703147] [2021-11-03 00:30:19,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:30:19,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:30:19,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:30:19,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:30:19,487 INFO L87 Difference]: Start difference. First operand 45385 states and 56762 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:30:21,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:30:28,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:30:35,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:30:35,096 INFO L93 Difference]: Finished difference Result 139087 states and 174234 transitions. [2021-11-03 00:30:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:30:35,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 163 [2021-11-03 00:30:35,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:30:35,244 INFO L225 Difference]: With dead ends: 139087 [2021-11-03 00:30:35,244 INFO L226 Difference]: Without dead ends: 93765 [2021-11-03 00:30:35,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.69ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:30:35,316 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2749 mSDsluCounter, 4606 mSDsCounter, 0 mSdLazyCounter, 7800 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12512.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2749 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.56ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7800 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14086.29ms IncrementalHoareTripleChecker+Time [2021-11-03 00:30:35,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2749 Valid, 0 Invalid, 7810 Unknown, 0 Unchecked, 21.56ms Time], IncrementalHoareTripleChecker [8 Valid, 7800 Invalid, 2 Unknown, 0 Unchecked, 14086.29ms Time] [2021-11-03 00:30:35,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93765 states. [2021-11-03 00:30:36,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93765 to 49513. [2021-11-03 00:30:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49513 states, 49473 states have (on average 1.2560790734339944) internal successors, (62142), 49512 states have internal predecessors, (62142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:30:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49513 states to 49513 states and 62142 transitions. [2021-11-03 00:30:37,023 INFO L78 Accepts]: Start accepts. Automaton has 49513 states and 62142 transitions. Word has length 163 [2021-11-03 00:30:37,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:30:37,023 INFO L470 AbstractCegarLoop]: Abstraction has 49513 states and 62142 transitions. [2021-11-03 00:30:37,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:30:37,023 INFO L276 IsEmpty]: Start isEmpty. Operand 49513 states and 62142 transitions. [2021-11-03 00:30:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-03 00:30:37,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:30:37,026 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:30:37,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 00:30:37,027 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:30:37,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:30:37,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1966091668, now seen corresponding path program 1 times [2021-11-03 00:30:37,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:30:37,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990089552] [2021-11-03 00:30:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:30:37,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:30:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:30:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-03 00:30:37,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:30:37,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990089552] [2021-11-03 00:30:37,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990089552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:30:37,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:30:37,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 00:30:37,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835878790] [2021-11-03 00:30:37,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:30:37,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:30:37,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:30:37,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:30:37,361 INFO L87 Difference]: Start difference. First operand 49513 states and 62142 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:30:38,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:30:42,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:30:48,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:30:48,902 INFO L93 Difference]: Finished difference Result 144549 states and 180756 transitions. [2021-11-03 00:30:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:30:48,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 164 [2021-11-03 00:30:48,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:30:49,153 INFO L225 Difference]: With dead ends: 144549 [2021-11-03 00:30:49,154 INFO L226 Difference]: Without dead ends: 95099 [2021-11-03 00:30:49,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:30:49,212 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1295 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 73 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8139.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.27ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9370.56ms IncrementalHoareTripleChecker+Time [2021-11-03 00:30:49,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1295 Valid, 0 Invalid, 3602 Unknown, 0 Unchecked, 7.27ms Time], IncrementalHoareTripleChecker [73 Valid, 3528 Invalid, 1 Unknown, 0 Unchecked, 9370.56ms Time] [2021-11-03 00:30:49,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95099 states. [2021-11-03 00:30:51,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95099 to 94474. [2021-11-03 00:30:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94474 states, 94434 states have (on average 1.2267403689349174) internal successors, (115846), 94473 states have internal predecessors, (115846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:30:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94474 states to 94474 states and 115846 transitions. [2021-11-03 00:30:51,994 INFO L78 Accepts]: Start accepts. Automaton has 94474 states and 115846 transitions. Word has length 164 [2021-11-03 00:30:51,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:30:51,994 INFO L470 AbstractCegarLoop]: Abstraction has 94474 states and 115846 transitions. [2021-11-03 00:30:51,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:30:51,995 INFO L276 IsEmpty]: Start isEmpty. Operand 94474 states and 115846 transitions. [2021-11-03 00:30:51,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-03 00:30:51,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:30:51,998 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:30:51,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 00:30:51,998 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:30:51,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:30:51,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1966032086, now seen corresponding path program 1 times [2021-11-03 00:30:51,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:30:51,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309656204] [2021-11-03 00:30:51,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:30:51,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:30:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:30:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-03 00:30:52,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:30:52,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309656204] [2021-11-03 00:30:52,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309656204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:30:52,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:30:52,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:30:52,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378909371] [2021-11-03 00:30:52,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:30:52,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:30:52,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:30:52,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:30:52,196 INFO L87 Difference]: Start difference. First operand 94474 states and 115846 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:30:54,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:30:59,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:31:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:31:07,818 INFO L93 Difference]: Finished difference Result 104023 states and 127448 transitions. [2021-11-03 00:31:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:31:07,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 164 [2021-11-03 00:31:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:31:08,012 INFO L225 Difference]: With dead ends: 104023 [2021-11-03 00:31:08,013 INFO L226 Difference]: Without dead ends: 104009 [2021-11-03 00:31:08,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:31:08,047 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3199 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 5853 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11533.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3199 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.89ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 5853 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13020.94ms IncrementalHoareTripleChecker+Time [2021-11-03 00:31:08,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3199 Valid, 0 Invalid, 5890 Unknown, 0 Unchecked, 20.89ms Time], IncrementalHoareTripleChecker [35 Valid, 5853 Invalid, 2 Unknown, 0 Unchecked, 13020.94ms Time] [2021-11-03 00:31:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104009 states. [2021-11-03 00:31:10,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104009 to 101210. [2021-11-03 00:31:10,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101210 states, 101170 states have (on average 1.2257388553919146) internal successors, (124008), 101209 states have internal predecessors, (124008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:31:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101210 states to 101210 states and 124008 transitions. [2021-11-03 00:31:11,082 INFO L78 Accepts]: Start accepts. Automaton has 101210 states and 124008 transitions. Word has length 164 [2021-11-03 00:31:11,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:31:11,083 INFO L470 AbstractCegarLoop]: Abstraction has 101210 states and 124008 transitions. [2021-11-03 00:31:11,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:31:11,083 INFO L276 IsEmpty]: Start isEmpty. Operand 101210 states and 124008 transitions. [2021-11-03 00:31:11,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-03 00:31:11,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:31:11,086 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:31:11,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 00:31:11,086 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:31:11,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:31:11,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1865075794, now seen corresponding path program 1 times [2021-11-03 00:31:11,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:31:11,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199975782] [2021-11-03 00:31:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:31:11,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:31:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:31:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-03 00:31:11,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:31:11,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199975782] [2021-11-03 00:31:11,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199975782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:31:11,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:31:11,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 00:31:11,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744536036] [2021-11-03 00:31:11,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:31:11,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:31:11,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:31:11,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:31:11,218 INFO L87 Difference]: Start difference. First operand 101210 states and 124008 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:31:12,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:31:14,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:31:17,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:31:23,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:31:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:31:29,104 INFO L93 Difference]: Finished difference Result 106671 states and 130107 transitions. [2021-11-03 00:31:29,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:31:29,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-11-03 00:31:29,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:31:29,290 INFO L225 Difference]: With dead ends: 106671 [2021-11-03 00:31:29,290 INFO L226 Difference]: Without dead ends: 106657 [2021-11-03 00:31:29,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:31:29,327 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1736 mSDsluCounter, 3300 mSDsCounter, 0 mSdLazyCounter, 5940 mSolverCounterSat, 26 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13415.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.77ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 5940 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15477.44ms IncrementalHoareTripleChecker+Time [2021-11-03 00:31:29,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1736 Valid, 0 Invalid, 5969 Unknown, 0 Unchecked, 15.77ms Time], IncrementalHoareTripleChecker [26 Valid, 5940 Invalid, 3 Unknown, 0 Unchecked, 15477.44ms Time] [2021-11-03 00:31:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106657 states. [2021-11-03 00:31:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106657 to 101196. [2021-11-03 00:31:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101196 states, 101163 states have (on average 1.2217411504206084) internal successors, (123595), 101195 states have internal predecessors, (123595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:31:32,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101196 states to 101196 states and 123595 transitions. [2021-11-03 00:31:32,600 INFO L78 Accepts]: Start accepts. Automaton has 101196 states and 123595 transitions. Word has length 170 [2021-11-03 00:31:32,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:31:32,611 INFO L470 AbstractCegarLoop]: Abstraction has 101196 states and 123595 transitions. [2021-11-03 00:31:32,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:31:32,611 INFO L276 IsEmpty]: Start isEmpty. Operand 101196 states and 123595 transitions. [2021-11-03 00:31:32,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-03 00:31:32,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:31:32,625 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:31:32,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 00:31:32,625 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:31:32,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:31:32,626 INFO L85 PathProgramCache]: Analyzing trace with hash -562314245, now seen corresponding path program 1 times [2021-11-03 00:31:32,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:31:32,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420739791] [2021-11-03 00:31:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:31:32,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:31:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:31:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-03 00:31:32,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:31:32,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420739791] [2021-11-03 00:31:32,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420739791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:31:32,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:31:32,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:31:32,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429363289] [2021-11-03 00:31:32,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:31:32,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:31:32,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:31:32,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:31:32,827 INFO L87 Difference]: Start difference. First operand 101196 states and 123595 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:31:33,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:31:36,545 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:31:41,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:31:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:31:50,203 INFO L93 Difference]: Finished difference Result 105430 states and 128646 transitions. [2021-11-03 00:31:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:31:50,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 176 [2021-11-03 00:31:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:31:50,395 INFO L225 Difference]: With dead ends: 105430 [2021-11-03 00:31:50,395 INFO L226 Difference]: Without dead ends: 105420 [2021-11-03 00:31:50,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.94ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:31:50,427 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3484 mSDsluCounter, 3039 mSDsCounter, 0 mSdLazyCounter, 5803 mSolverCounterSat, 33 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12945.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3484 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.46ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 5803 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14761.17ms IncrementalHoareTripleChecker+Time [2021-11-03 00:31:50,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3484 Valid, 0 Invalid, 5838 Unknown, 0 Unchecked, 20.46ms Time], IncrementalHoareTripleChecker [33 Valid, 5803 Invalid, 2 Unknown, 0 Unchecked, 14761.17ms Time] [2021-11-03 00:31:50,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105420 states. [2021-11-03 00:31:53,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105420 to 102188. [2021-11-03 00:31:53,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102188 states, 102155 states have (on average 1.2205080514903823) internal successors, (124681), 102187 states have internal predecessors, (124681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:31:53,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102188 states to 102188 states and 124681 transitions. [2021-11-03 00:31:53,402 INFO L78 Accepts]: Start accepts. Automaton has 102188 states and 124681 transitions. Word has length 176 [2021-11-03 00:31:53,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:31:53,402 INFO L470 AbstractCegarLoop]: Abstraction has 102188 states and 124681 transitions. [2021-11-03 00:31:53,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:31:53,403 INFO L276 IsEmpty]: Start isEmpty. Operand 102188 states and 124681 transitions. [2021-11-03 00:31:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-03 00:31:53,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:31:53,405 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:31:53,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 00:31:53,405 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:31:53,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:31:53,405 INFO L85 PathProgramCache]: Analyzing trace with hash -884580861, now seen corresponding path program 1 times [2021-11-03 00:31:53,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:31:53,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876765881] [2021-11-03 00:31:53,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:31:53,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:31:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:31:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-03 00:31:53,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:31:53,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876765881] [2021-11-03 00:31:53,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876765881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:31:53,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:31:53,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 00:31:53,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745140126] [2021-11-03 00:31:53,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:31:53,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:31:53,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:31:53,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:31:53,540 INFO L87 Difference]: Start difference. First operand 102188 states and 124681 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:31:54,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:31:56,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:31:58,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:32:05,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:32:11,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:32:11,469 INFO L93 Difference]: Finished difference Result 107249 states and 130068 transitions. [2021-11-03 00:32:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:32:11,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 182 [2021-11-03 00:32:11,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:32:11,652 INFO L225 Difference]: With dead ends: 107249 [2021-11-03 00:32:11,652 INFO L226 Difference]: Without dead ends: 107239 [2021-11-03 00:32:11,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:32:11,687 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1460 mSDsluCounter, 3623 mSDsCounter, 0 mSdLazyCounter, 6245 mSolverCounterSat, 20 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13136.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.39ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 6245 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15402.37ms IncrementalHoareTripleChecker+Time [2021-11-03 00:32:11,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1460 Valid, 0 Invalid, 6267 Unknown, 0 Unchecked, 14.39ms Time], IncrementalHoareTripleChecker [20 Valid, 6245 Invalid, 2 Unknown, 0 Unchecked, 15402.37ms Time] [2021-11-03 00:32:11,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107239 states. [2021-11-03 00:32:14,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107239 to 102178. [2021-11-03 00:32:14,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102178 states, 102150 states have (on average 1.215330396475771) internal successors, (124146), 102177 states have internal predecessors, (124146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:32:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102178 states to 102178 states and 124146 transitions. [2021-11-03 00:32:14,677 INFO L78 Accepts]: Start accepts. Automaton has 102178 states and 124146 transitions. Word has length 182 [2021-11-03 00:32:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:32:14,677 INFO L470 AbstractCegarLoop]: Abstraction has 102178 states and 124146 transitions. [2021-11-03 00:32:14,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:32:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 102178 states and 124146 transitions. [2021-11-03 00:32:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-11-03 00:32:14,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:32:14,682 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:32:14,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 00:32:14,682 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-03 00:32:14,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:32:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1298065296, now seen corresponding path program 1 times [2021-11-03 00:32:14,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:32:14,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614158490] [2021-11-03 00:32:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:32:14,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:32:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:32:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-03 00:32:15,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:32:15,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614158490] [2021-11-03 00:32:15,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614158490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:32:15,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:32:15,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 00:32:15,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120829959] [2021-11-03 00:32:15,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 00:32:15,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:32:15,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 00:32:15,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 00:32:15,182 INFO L87 Difference]: Start difference. First operand 102178 states and 124146 transitions. Second operand has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 7 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:32:17,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:32:41,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []