./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 12:44:31,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:44:31,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:44:31,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:44:31,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:44:31,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:44:31,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:44:31,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:44:31,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:44:31,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:44:31,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:44:31,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:44:31,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:44:31,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:44:31,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:44:31,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:44:31,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:44:31,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:44:31,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:44:31,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:44:31,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:44:31,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:44:31,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:44:31,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:44:31,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:44:31,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:44:31,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:44:31,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:44:31,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:44:31,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:44:31,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:44:31,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:44:31,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:44:31,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:44:31,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:44:31,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:44:31,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:44:31,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:44:31,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:44:31,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:44:31,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:44:31,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:44:31,752 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:44:31,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:44:31,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:44:31,753 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:44:31,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:44:31,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:44:31,755 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:44:31,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:44:31,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:44:31,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:44:31,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:44:31,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:44:31,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:44:31,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:44:31,757 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:44:31,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:44:31,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:44:31,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:44:31,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:44:31,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:44:31,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:44:31,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:44:31,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:44:31,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:44:31,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:44:31,759 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:44:31,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:44:31,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:44:31,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:44:31,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 [2021-11-07 12:44:32,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:44:32,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:44:32,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:44:32,028 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:44:32,029 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:44:32,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-07 12:44:32,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc81a3f67/ade49c7daccd4928bda729a1489a64f7/FLAG2da8bb058 [2021-11-07 12:44:32,949 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:44:32,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-07 12:44:32,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc81a3f67/ade49c7daccd4928bda729a1489a64f7/FLAG2da8bb058 [2021-11-07 12:44:33,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc81a3f67/ade49c7daccd4928bda729a1489a64f7 [2021-11-07 12:44:33,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:44:33,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:44:33,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:44:33,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:44:33,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:44:33,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:33" (1/1) ... [2021-11-07 12:44:33,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386c322c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:33, skipping insertion in model container [2021-11-07 12:44:33,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:33" (1/1) ... [2021-11-07 12:44:33,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:44:33,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:44:33,714 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-07 12:44:34,528 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2021-11-07 12:44:35,743 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 12:44:35,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:44:35,820 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:44:35,901 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-07 12:44:35,918 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2021-11-07 12:44:36,327 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 12:44:36,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:44:36,438 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:44:36,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:36 WrapperNode [2021-11-07 12:44:36,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:44:36,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:44:36,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:44:36,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:44:36,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:36" (1/1) ... [2021-11-07 12:44:36,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:36" (1/1) ... [2021-11-07 12:44:36,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:44:36,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:44:36,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:44:36,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:44:36,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:36" (1/1) ... [2021-11-07 12:44:36,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:36" (1/1) ... [2021-11-07 12:44:37,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:36" (1/1) ... [2021-11-07 12:44:37,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:36" (1/1) ... [2021-11-07 12:44:37,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:36" (1/1) ... [2021-11-07 12:44:37,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:36" (1/1) ... [2021-11-07 12:44:37,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:36" (1/1) ... [2021-11-07 12:44:37,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:44:37,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:44:37,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:44:37,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:44:37,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:36" (1/1) ... [2021-11-07 12:44:37,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:44:37,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:44:37,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 12:44:37,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 12:44:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 12:44:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 12:44:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-07 12:44:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-07 12:44:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2021-11-07 12:44:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2021-11-07 12:44:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2021-11-07 12:44:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2021-11-07 12:44:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_init_transfer [2021-11-07 12:44:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_init_transfer [2021-11-07 12:44:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure bulk_irq [2021-11-07 12:44:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bulk_irq [2021-11-07 12:44:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:44:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:44:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-07 12:44:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-07 12:44:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-07 12:44:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_submit_int_urb [2021-11-07 12:44:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_submit_int_urb [2021-11-07 12:44:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-07 12:44:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-07 12:44:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure int_irq [2021-11-07 12:44:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure int_irq [2021-11-07 12:44:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:44:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:44:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure fill_frame [2021-11-07 12:44:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_frame [2021-11-07 12:44:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_stream_off [2021-11-07 12:44:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_stream_off [2021-11-07 12:44:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 12:44:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure isoc_irq [2021-11-07 12:44:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isoc_irq [2021-11-07 12:44:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_input_create_urb [2021-11-07 12:44:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_input_create_urb [2021-11-07 12:44:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 12:44:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-11-07 12:44:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-11-07 12:44:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-11-07 12:44:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-11-07 12:44:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-11-07 12:44:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-11-07 12:44:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_9 [2021-11-07 12:44:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_9 [2021-11-07 12:44:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:44:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-07 12:44:37,911 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-07 12:44:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:44:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:44:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:44:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 12:44:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 12:44:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 12:44:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-07 12:44:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-07 12:44:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:44:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:44:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:44:51,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:44:51,313 INFO L299 CfgBuilder]: Removed 2394 assume(true) statements. [2021-11-07 12:44:51,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:51 BoogieIcfgContainer [2021-11-07 12:44:51,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:44:51,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:44:51,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:44:51,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:44:51,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:44:33" (1/3) ... [2021-11-07 12:44:51,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e62306e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:51, skipping insertion in model container [2021-11-07 12:44:51,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:36" (2/3) ... [2021-11-07 12:44:51,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e62306e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:51, skipping insertion in model container [2021-11-07 12:44:51,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:51" (3/3) ... [2021-11-07 12:44:51,327 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-07 12:44:51,331 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:44:51,332 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 12:44:51,396 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:44:51,401 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 12:44:51,402 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 12:44:51,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 3337 states, 3248 states have (on average 1.4550492610837438) internal successors, (4726), 3258 states have internal predecessors, (4726), 63 states have call successors, (63), 20 states have call predecessors, (63), 20 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-07 12:44:51,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 12:44:51,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:44:51,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:44:51,476 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:44:51,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:44:51,480 INFO L85 PathProgramCache]: Analyzing trace with hash 645787444, now seen corresponding path program 1 times [2021-11-07 12:44:51,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:44:51,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93997482] [2021-11-07 12:44:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:44:51,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:44:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:44:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:44:52,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:44:52,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93997482] [2021-11-07 12:44:52,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93997482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:44:52,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:44:52,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:44:52,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748474776] [2021-11-07 12:44:52,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:44:52,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:44:52,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:44:52,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:44:52,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:44:52,221 INFO L87 Difference]: Start difference. First operand has 3337 states, 3248 states have (on average 1.4550492610837438) internal successors, (4726), 3258 states have internal predecessors, (4726), 63 states have call successors, (63), 20 states have call predecessors, (63), 20 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) 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) [2021-11-07 12:44:54,285 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 [] [2021-11-07 12:44:54,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:44:54,752 INFO L93 Difference]: Finished difference Result 9735 states and 14301 transitions. [2021-11-07 12:44:54,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:44:54,755 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 97 [2021-11-07 12:44:54,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:44:54,818 INFO L225 Difference]: With dead ends: 9735 [2021-11-07 12:44:54,819 INFO L226 Difference]: Without dead ends: 6385 [2021-11-07 12:44:54,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:44:54,849 INFO L933 BasicCegarLoop]: 4721 mSDtfsCounter, 4332 mSDsluCounter, 4648 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2071.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4332 SdHoareTripleChecker+Valid, 9369 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.26ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2204.58ms IncrementalHoareTripleChecker+Time [2021-11-07 12:44:54,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4332 Valid, 9369 Invalid, 15 Unknown, 0 Unchecked, 33.26ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2204.58ms Time] [2021-11-07 12:44:54,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2021-11-07 12:44:55,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 6385. [2021-11-07 12:44:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6385 states, 6214 states have (on average 1.4023173479240425) internal successors, (8714), 6228 states have internal predecessors, (8714), 126 states have call successors, (126), 40 states have call predecessors, (126), 40 states have return successors, (126), 122 states have call predecessors, (126), 126 states have call successors, (126) [2021-11-07 12:44:55,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6385 states to 6385 states and 8966 transitions. [2021-11-07 12:44:55,313 INFO L78 Accepts]: Start accepts. Automaton has 6385 states and 8966 transitions. Word has length 97 [2021-11-07 12:44:55,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:44:55,316 INFO L470 AbstractCegarLoop]: Abstraction has 6385 states and 8966 transitions. [2021-11-07 12:44:55,319 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) [2021-11-07 12:44:55,320 INFO L276 IsEmpty]: Start isEmpty. Operand 6385 states and 8966 transitions. [2021-11-07 12:44:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 12:44:55,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:44:55,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:44:55,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:44:55,331 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:44:55,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:44:55,336 INFO L85 PathProgramCache]: Analyzing trace with hash -27573547, now seen corresponding path program 1 times [2021-11-07 12:44:55,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:44:55,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554784619] [2021-11-07 12:44:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:44:55,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:44:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:44:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:44:55,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:44:55,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554784619] [2021-11-07 12:44:55,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554784619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:44:55,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:44:55,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:44:55,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713329442] [2021-11-07 12:44:55,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:44:55,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:44:55,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:44:55,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:44:55,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:44:55,639 INFO L87 Difference]: Start difference. First operand 6385 states and 8966 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:44:56,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:44:56,161 INFO L93 Difference]: Finished difference Result 12562 states and 17681 transitions. [2021-11-07 12:44:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:44:56,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-07 12:44:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:44:56,199 INFO L225 Difference]: With dead ends: 12562 [2021-11-07 12:44:56,200 INFO L226 Difference]: Without dead ends: 6384 [2021-11-07 12:44:56,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.83ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:44:56,223 INFO L933 BasicCegarLoop]: 8166 mSDtfsCounter, 8236 mSDsluCounter, 4600 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8236 SdHoareTripleChecker+Valid, 12766 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.58ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 188.79ms IncrementalHoareTripleChecker+Time [2021-11-07 12:44:56,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8236 Valid, 12766 Invalid, 68 Unknown, 0 Unchecked, 33.58ms Time], IncrementalHoareTripleChecker [34 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 188.79ms Time] [2021-11-07 12:44:56,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2021-11-07 12:44:56,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 6384. [2021-11-07 12:44:56,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6384 states, 6213 states have (on average 1.4018992435216482) internal successors, (8710), 6227 states have internal predecessors, (8710), 126 states have call successors, (126), 40 states have call predecessors, (126), 40 states have return successors, (126), 122 states have call predecessors, (126), 126 states have call successors, (126) [2021-11-07 12:44:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6384 states to 6384 states and 8962 transitions. [2021-11-07 12:44:56,452 INFO L78 Accepts]: Start accepts. Automaton has 6384 states and 8962 transitions. Word has length 100 [2021-11-07 12:44:56,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:44:56,453 INFO L470 AbstractCegarLoop]: Abstraction has 6384 states and 8962 transitions. [2021-11-07 12:44:56,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:44:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 6384 states and 8962 transitions. [2021-11-07 12:44:56,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-07 12:44:56,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:44:56,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:44:56,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:44:56,465 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:44:56,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:44:56,465 INFO L85 PathProgramCache]: Analyzing trace with hash 810832890, now seen corresponding path program 1 times [2021-11-07 12:44:56,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:44:56,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865030933] [2021-11-07 12:44:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:44:56,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:44:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:44:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:44:56,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:44:56,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865030933] [2021-11-07 12:44:56,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865030933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:44:56,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:44:56,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:44:56,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068640513] [2021-11-07 12:44:56,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:44:57,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:44:57,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:44:57,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:44:57,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:44:57,003 INFO L87 Difference]: Start difference. First operand 6384 states and 8962 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 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) [2021-11-07 12:44:57,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:44:57,584 INFO L93 Difference]: Finished difference Result 18736 states and 26891 transitions. [2021-11-07 12:44:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:44:57,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 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 126 [2021-11-07 12:44:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:44:57,685 INFO L225 Difference]: With dead ends: 18736 [2021-11-07 12:44:57,686 INFO L226 Difference]: Without dead ends: 12559 [2021-11-07 12:44:57,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.15ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:44:57,739 INFO L933 BasicCegarLoop]: 4842 mSDtfsCounter, 4575 mSDsluCounter, 4433 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4575 SdHoareTripleChecker+Valid, 9275 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.76ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.89ms IncrementalHoareTripleChecker+Time [2021-11-07 12:44:57,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4575 Valid, 9275 Invalid, 41 Unknown, 0 Unchecked, 26.76ms Time], IncrementalHoareTripleChecker [12 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 84.89ms Time] [2021-11-07 12:44:57,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12559 states. [2021-11-07 12:44:58,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12559 to 12547. [2021-11-07 12:44:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12547 states, 12210 states have (on average 1.4042588042588042) internal successors, (17146), 12234 states have internal predecessors, (17146), 252 states have call successors, (252), 80 states have call predecessors, (252), 80 states have return successors, (504), 244 states have call predecessors, (504), 252 states have call successors, (504) [2021-11-07 12:44:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12547 states to 12547 states and 17902 transitions. [2021-11-07 12:44:58,281 INFO L78 Accepts]: Start accepts. Automaton has 12547 states and 17902 transitions. Word has length 126 [2021-11-07 12:44:58,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:44:58,283 INFO L470 AbstractCegarLoop]: Abstraction has 12547 states and 17902 transitions. [2021-11-07 12:44:58,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 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) [2021-11-07 12:44:58,284 INFO L276 IsEmpty]: Start isEmpty. Operand 12547 states and 17902 transitions. [2021-11-07 12:44:58,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 12:44:58,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:44:58,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:44:58,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:44:58,292 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:44:58,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:44:58,292 INFO L85 PathProgramCache]: Analyzing trace with hash -633975522, now seen corresponding path program 1 times [2021-11-07 12:44:58,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:44:58,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116911742] [2021-11-07 12:44:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:44:58,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:44:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:44:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:44:58,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:44:58,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116911742] [2021-11-07 12:44:58,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116911742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:44:58,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:44:58,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:44:58,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950217104] [2021-11-07 12:44:58,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:44:58,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:44:58,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:44:58,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:44:58,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:44:58,725 INFO L87 Difference]: Start difference. First operand 12547 states and 17902 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:44:59,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:44:59,087 INFO L93 Difference]: Finished difference Result 12547 states and 17902 transitions. [2021-11-07 12:44:59,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:44:59,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 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 127 [2021-11-07 12:44:59,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:44:59,159 INFO L225 Difference]: With dead ends: 12547 [2021-11-07 12:44:59,160 INFO L226 Difference]: Without dead ends: 12545 [2021-11-07 12:44:59,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:44:59,173 INFO L933 BasicCegarLoop]: 4638 mSDtfsCounter, 4519 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4519 SdHoareTripleChecker+Valid, 4638 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.96ms IncrementalHoareTripleChecker+Time [2021-11-07 12:44:59,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4519 Valid, 4638 Invalid, 1 Unknown, 0 Unchecked, 12.10ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.96ms Time] [2021-11-07 12:44:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12545 states. [2021-11-07 12:44:59,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12545 to 12545. [2021-11-07 12:44:59,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12545 states, 12209 states have (on average 1.404210009009747) internal successors, (17144), 12232 states have internal predecessors, (17144), 252 states have call successors, (252), 80 states have call predecessors, (252), 80 states have return successors, (504), 244 states have call predecessors, (504), 252 states have call successors, (504) [2021-11-07 12:44:59,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12545 states to 12545 states and 17900 transitions. [2021-11-07 12:44:59,707 INFO L78 Accepts]: Start accepts. Automaton has 12545 states and 17900 transitions. Word has length 127 [2021-11-07 12:44:59,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:44:59,707 INFO L470 AbstractCegarLoop]: Abstraction has 12545 states and 17900 transitions. [2021-11-07 12:44:59,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:44:59,708 INFO L276 IsEmpty]: Start isEmpty. Operand 12545 states and 17900 transitions. [2021-11-07 12:44:59,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-07 12:44:59,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:44:59,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:44:59,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:44:59,716 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:44:59,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:44:59,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1821603972, now seen corresponding path program 1 times [2021-11-07 12:44:59,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:44:59,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256587732] [2021-11-07 12:44:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:44:59,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:44:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:45:00,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:00,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256587732] [2021-11-07 12:45:00,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256587732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:00,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:00,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:45:00,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570838193] [2021-11-07 12:45:00,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:00,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:45:00,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:00,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:45:00,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:00,101 INFO L87 Difference]: Start difference. First operand 12545 states and 17900 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:00,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:00,392 INFO L93 Difference]: Finished difference Result 12545 states and 17900 transitions. [2021-11-07 12:45:00,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:45:00,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 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 128 [2021-11-07 12:45:00,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:00,451 INFO L225 Difference]: With dead ends: 12545 [2021-11-07 12:45:00,452 INFO L226 Difference]: Without dead ends: 12543 [2021-11-07 12:45:00,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:00,469 INFO L933 BasicCegarLoop]: 4636 mSDtfsCounter, 4516 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4516 SdHoareTripleChecker+Valid, 4636 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.82ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:00,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4516 Valid, 4636 Invalid, 1 Unknown, 0 Unchecked, 8.01ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.82ms Time] [2021-11-07 12:45:00,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12543 states. [2021-11-07 12:45:00,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12543 to 12543. [2021-11-07 12:45:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12543 states, 12208 states have (on average 1.4041612057667103) internal successors, (17142), 12230 states have internal predecessors, (17142), 252 states have call successors, (252), 80 states have call predecessors, (252), 80 states have return successors, (504), 244 states have call predecessors, (504), 252 states have call successors, (504) [2021-11-07 12:45:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12543 states to 12543 states and 17898 transitions. [2021-11-07 12:45:01,056 INFO L78 Accepts]: Start accepts. Automaton has 12543 states and 17898 transitions. Word has length 128 [2021-11-07 12:45:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:01,056 INFO L470 AbstractCegarLoop]: Abstraction has 12543 states and 17898 transitions. [2021-11-07 12:45:01,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:01,057 INFO L276 IsEmpty]: Start isEmpty. Operand 12543 states and 17898 transitions. [2021-11-07 12:45:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-07 12:45:01,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:01,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:45:01,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:45:01,062 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:01,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:01,063 INFO L85 PathProgramCache]: Analyzing trace with hash 635156968, now seen corresponding path program 1 times [2021-11-07 12:45:01,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:01,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944688542] [2021-11-07 12:45:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:01,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:01,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:45:01,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:01,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944688542] [2021-11-07 12:45:01,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944688542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:01,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:01,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:45:01,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073943133] [2021-11-07 12:45:01,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:01,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:45:01,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:01,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:45:01,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:01,379 INFO L87 Difference]: Start difference. First operand 12543 states and 17898 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:01,662 INFO L93 Difference]: Finished difference Result 12543 states and 17898 transitions. [2021-11-07 12:45:01,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:45:01,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 129 [2021-11-07 12:45:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:01,719 INFO L225 Difference]: With dead ends: 12543 [2021-11-07 12:45:01,719 INFO L226 Difference]: Without dead ends: 12541 [2021-11-07 12:45:01,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:01,735 INFO L933 BasicCegarLoop]: 4634 mSDtfsCounter, 4513 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4513 SdHoareTripleChecker+Valid, 4634 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.85ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.83ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:01,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4513 Valid, 4634 Invalid, 1 Unknown, 0 Unchecked, 6.85ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.83ms Time] [2021-11-07 12:45:01,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12541 states. [2021-11-07 12:45:02,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12541 to 12541. [2021-11-07 12:45:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12541 states, 12207 states have (on average 1.40411239452773) internal successors, (17140), 12228 states have internal predecessors, (17140), 252 states have call successors, (252), 80 states have call predecessors, (252), 80 states have return successors, (504), 244 states have call predecessors, (504), 252 states have call successors, (504) [2021-11-07 12:45:02,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12541 states to 12541 states and 17896 transitions. [2021-11-07 12:45:02,312 INFO L78 Accepts]: Start accepts. Automaton has 12541 states and 17896 transitions. Word has length 129 [2021-11-07 12:45:02,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:02,313 INFO L470 AbstractCegarLoop]: Abstraction has 12541 states and 17896 transitions. [2021-11-07 12:45:02,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:02,313 INFO L276 IsEmpty]: Start isEmpty. Operand 12541 states and 17896 transitions. [2021-11-07 12:45:02,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-07 12:45:02,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:02,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:45:02,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 12:45:02,319 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:02,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:02,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1784961778, now seen corresponding path program 1 times [2021-11-07 12:45:02,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:02,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808732501] [2021-11-07 12:45:02,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:02,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:45:02,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:02,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808732501] [2021-11-07 12:45:02,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808732501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:02,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:02,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:45:02,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800982838] [2021-11-07 12:45:02,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:02,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:45:02,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:02,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:45:02,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:02,605 INFO L87 Difference]: Start difference. First operand 12541 states and 17896 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:02,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:02,906 INFO L93 Difference]: Finished difference Result 12541 states and 17896 transitions. [2021-11-07 12:45:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:45:02,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-07 12:45:02,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:02,959 INFO L225 Difference]: With dead ends: 12541 [2021-11-07 12:45:02,959 INFO L226 Difference]: Without dead ends: 12533 [2021-11-07 12:45:02,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:45:02,975 INFO L933 BasicCegarLoop]: 4633 mSDtfsCounter, 4510 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 4633 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:02,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4510 Valid, 4633 Invalid, 0 Unknown, 0 Unchecked, 7.39ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 12:45:02,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12533 states. [2021-11-07 12:45:03,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12533 to 12533. [2021-11-07 12:45:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12533 states, 12200 states have (on average 1.4041803278688525) internal successors, (17131), 12220 states have internal predecessors, (17131), 252 states have call successors, (252), 80 states have call predecessors, (252), 80 states have return successors, (504), 244 states have call predecessors, (504), 252 states have call successors, (504) [2021-11-07 12:45:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12533 states to 12533 states and 17887 transitions. [2021-11-07 12:45:03,642 INFO L78 Accepts]: Start accepts. Automaton has 12533 states and 17887 transitions. Word has length 130 [2021-11-07 12:45:03,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:03,643 INFO L470 AbstractCegarLoop]: Abstraction has 12533 states and 17887 transitions. [2021-11-07 12:45:03,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:03,644 INFO L276 IsEmpty]: Start isEmpty. Operand 12533 states and 17887 transitions. [2021-11-07 12:45:03,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-07 12:45:03,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:03,687 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-07 12:45:03,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 12:45:03,687 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:03,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1503885213, now seen corresponding path program 1 times [2021-11-07 12:45:03,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:03,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188032343] [2021-11-07 12:45:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:03,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-07 12:45:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-07 12:45:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:45:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 12:45:04,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:04,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188032343] [2021-11-07 12:45:04,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188032343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:04,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:04,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:45:04,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498276415] [2021-11-07 12:45:04,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:04,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:45:04,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:04,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:45:04,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:45:04,193 INFO L87 Difference]: Start difference. First operand 12533 states and 17887 transitions. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 12:45:06,237 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 [] [2021-11-07 12:45:08,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:45:14,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:14,525 INFO L93 Difference]: Finished difference Result 25515 states and 37067 transitions. [2021-11-07 12:45:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:45:14,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 219 [2021-11-07 12:45:14,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:14,596 INFO L225 Difference]: With dead ends: 25515 [2021-11-07 12:45:14,596 INFO L226 Difference]: Without dead ends: 13189 [2021-11-07 12:45:14,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.95ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:45:14,676 INFO L933 BasicCegarLoop]: 4169 mSDtfsCounter, 4733 mSDsluCounter, 7049 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 320 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8958.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4760 SdHoareTripleChecker+Valid, 11218 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.62ms SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9725.24ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:14,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4760 Valid, 11218 Invalid, 2268 Unknown, 0 Unchecked, 41.62ms Time], IncrementalHoareTripleChecker [320 Valid, 1946 Invalid, 2 Unknown, 0 Unchecked, 9725.24ms Time] [2021-11-07 12:45:14,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13189 states. [2021-11-07 12:45:15,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13189 to 13125. [2021-11-07 12:45:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13125 states, 12704 states have (on average 1.34485201511335) internal successors, (17085), 12756 states have internal predecessors, (17085), 268 states have call successors, (268), 80 states have call predecessors, (268), 152 states have return successors, (716), 304 states have call predecessors, (716), 268 states have call successors, (716) [2021-11-07 12:45:15,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13125 states to 13125 states and 18069 transitions. [2021-11-07 12:45:15,293 INFO L78 Accepts]: Start accepts. Automaton has 13125 states and 18069 transitions. Word has length 219 [2021-11-07 12:45:15,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:15,295 INFO L470 AbstractCegarLoop]: Abstraction has 13125 states and 18069 transitions. [2021-11-07 12:45:15,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 12:45:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 13125 states and 18069 transitions. [2021-11-07 12:45:15,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-07 12:45:15,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:15,337 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-07 12:45:15,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 12:45:15,337 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:15,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:15,338 INFO L85 PathProgramCache]: Analyzing trace with hash 766242725, now seen corresponding path program 1 times [2021-11-07 12:45:15,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:15,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087930915] [2021-11-07 12:45:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:15,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:15,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-07 12:45:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-07 12:45:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:15,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:45:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 12:45:15,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:15,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087930915] [2021-11-07 12:45:15,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087930915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:15,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:15,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:45:15,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808460612] [2021-11-07 12:45:15,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:15,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:45:15,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:45:15,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:45:15,727 INFO L87 Difference]: Start difference. First operand 13125 states and 18069 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 12:45:17,774 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 [] [2021-11-07 12:45:22,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:22,830 INFO L93 Difference]: Finished difference Result 26211 states and 36849 transitions. [2021-11-07 12:45:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:45:22,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 219 [2021-11-07 12:45:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:22,895 INFO L225 Difference]: With dead ends: 26211 [2021-11-07 12:45:22,896 INFO L226 Difference]: Without dead ends: 13293 [2021-11-07 12:45:22,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.35ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:45:22,956 INFO L933 BasicCegarLoop]: 4349 mSDtfsCounter, 316 mSDsluCounter, 7510 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 88 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6005.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 11859 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.03ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6546.16ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:22,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 11859 Invalid, 1404 Unknown, 0 Unchecked, 27.03ms Time], IncrementalHoareTripleChecker [88 Valid, 1315 Invalid, 1 Unknown, 0 Unchecked, 6546.16ms Time] [2021-11-07 12:45:22,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13293 states. [2021-11-07 12:45:23,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13293 to 13129. [2021-11-07 12:45:23,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13129 states, 12708 states have (on average 1.3447434686811457) internal successors, (17089), 12760 states have internal predecessors, (17089), 268 states have call successors, (268), 80 states have call predecessors, (268), 152 states have return successors, (716), 304 states have call predecessors, (716), 268 states have call successors, (716) [2021-11-07 12:45:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13129 states to 13129 states and 18073 transitions. [2021-11-07 12:45:23,439 INFO L78 Accepts]: Start accepts. Automaton has 13129 states and 18073 transitions. Word has length 219 [2021-11-07 12:45:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:23,439 INFO L470 AbstractCegarLoop]: Abstraction has 13129 states and 18073 transitions. [2021-11-07 12:45:23,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 12:45:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 13129 states and 18073 transitions. [2021-11-07 12:45:23,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-07 12:45:23,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:23,478 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-07 12:45:23,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 12:45:23,478 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:23,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:23,479 INFO L85 PathProgramCache]: Analyzing trace with hash 231382310, now seen corresponding path program 1 times [2021-11-07 12:45:23,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:23,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315615539] [2021-11-07 12:45:23,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:23,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:23,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-07 12:45:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:23,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 12:45:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:23,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:45:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 12:45:23,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:23,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315615539] [2021-11-07 12:45:23,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315615539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:23,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:23,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:45:23,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83339300] [2021-11-07 12:45:23,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:23,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:45:23,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:23,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:45:23,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:45:23,947 INFO L87 Difference]: Start difference. First operand 13129 states and 18073 transitions. Second operand has 5 states, 5 states have (on average 42.4) internal successors, (212), 4 states have internal predecessors, (212), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 12:45:25,991 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 [] [2021-11-07 12:45:31,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:31,125 INFO L93 Difference]: Finished difference Result 26295 states and 36887 transitions. [2021-11-07 12:45:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 12:45:31,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 4 states have internal predecessors, (212), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 221 [2021-11-07 12:45:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:31,191 INFO L225 Difference]: With dead ends: 26295 [2021-11-07 12:45:31,192 INFO L226 Difference]: Without dead ends: 13373 [2021-11-07 12:45:31,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.40ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:45:31,259 INFO L933 BasicCegarLoop]: 4357 mSDtfsCounter, 369 mSDsluCounter, 11897 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 98 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6085.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 16254 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.67ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6621.11ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:31,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 16254 Invalid, 1504 Unknown, 0 Unchecked, 27.67ms Time], IncrementalHoareTripleChecker [98 Valid, 1405 Invalid, 1 Unknown, 0 Unchecked, 6621.11ms Time] [2021-11-07 12:45:31,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13373 states. [2021-11-07 12:45:31,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13373 to 13129. [2021-11-07 12:45:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13129 states, 12708 states have (on average 1.3444287063267233) internal successors, (17085), 12760 states have internal predecessors, (17085), 268 states have call successors, (268), 80 states have call predecessors, (268), 152 states have return successors, (716), 304 states have call predecessors, (716), 268 states have call successors, (716) [2021-11-07 12:45:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13129 states to 13129 states and 18069 transitions. [2021-11-07 12:45:31,737 INFO L78 Accepts]: Start accepts. Automaton has 13129 states and 18069 transitions. Word has length 221 [2021-11-07 12:45:31,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:31,738 INFO L470 AbstractCegarLoop]: Abstraction has 13129 states and 18069 transitions. [2021-11-07 12:45:31,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 4 states have internal predecessors, (212), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 12:45:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13129 states and 18069 transitions. [2021-11-07 12:45:31,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-07 12:45:31,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:31,788 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-07 12:45:31,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 12:45:31,789 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:31,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:31,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1817372770, now seen corresponding path program 1 times [2021-11-07 12:45:31,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:31,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292448372] [2021-11-07 12:45:31,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:31,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:32,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-07 12:45:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:32,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 12:45:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:45:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 12:45:32,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:32,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292448372] [2021-11-07 12:45:32,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292448372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:32,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:32,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 12:45:32,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118200739] [2021-11-07 12:45:32,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:32,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 12:45:32,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:32,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 12:45:32,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-07 12:45:32,571 INFO L87 Difference]: Start difference. First operand 13129 states and 18069 transitions. Second operand has 15 states, 15 states have (on average 14.266666666666667) internal successors, (214), 14 states have internal predecessors, (214), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 12:45:34,612 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 [] [2021-11-07 12:45:36,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:45:38,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:46:09,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:46:24,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:46:24,834 INFO L93 Difference]: Finished difference Result 69477 states and 95981 transitions. [2021-11-07 12:46:24,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 12:46:24,835 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.266666666666667) internal successors, (214), 14 states have internal predecessors, (214), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 223 [2021-11-07 12:46:24,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:46:25,222 INFO L225 Difference]: With dead ends: 69477 [2021-11-07 12:46:25,222 INFO L226 Difference]: Without dead ends: 56555 [2021-11-07 12:46:25,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 465.69ms TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 12:46:25,285 INFO L933 BasicCegarLoop]: 7670 mSDtfsCounter, 27337 mSDsluCounter, 64335 mSDsCounter, 0 mSdLazyCounter, 16142 mSolverCounterSat, 1987 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45876.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27418 SdHoareTripleChecker+Valid, 72005 SdHoareTripleChecker+Invalid, 18132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 167.24ms SdHoareTripleChecker+Time, 1987 IncrementalHoareTripleChecker+Valid, 16142 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49845.02ms IncrementalHoareTripleChecker+Time [2021-11-07 12:46:25,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27418 Valid, 72005 Invalid, 18132 Unknown, 0 Unchecked, 167.24ms Time], IncrementalHoareTripleChecker [1987 Valid, 16142 Invalid, 3 Unknown, 0 Unchecked, 49845.02ms Time] [2021-11-07 12:46:25,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56555 states. [2021-11-07 12:46:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56555 to 14041. [2021-11-07 12:46:26,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14041 states, 13560 states have (on average 1.353023598820059) internal successors, (18347), 13612 states have internal predecessors, (18347), 316 states have call successors, (316), 80 states have call predecessors, (316), 164 states have return successors, (1032), 364 states have call predecessors, (1032), 316 states have call successors, (1032) [2021-11-07 12:46:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14041 states to 14041 states and 19695 transitions. [2021-11-07 12:46:26,321 INFO L78 Accepts]: Start accepts. Automaton has 14041 states and 19695 transitions. Word has length 223 [2021-11-07 12:46:26,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:46:26,322 INFO L470 AbstractCegarLoop]: Abstraction has 14041 states and 19695 transitions. [2021-11-07 12:46:26,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.266666666666667) internal successors, (214), 14 states have internal predecessors, (214), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 12:46:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand 14041 states and 19695 transitions. [2021-11-07 12:46:26,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-07 12:46:26,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:46:26,370 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-07 12:46:26,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 12:46:26,370 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:46:26,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:46:26,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1092906886, now seen corresponding path program 1 times [2021-11-07 12:46:26,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:46:26,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314209666] [2021-11-07 12:46:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:46:26,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:46:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:46:26,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-07 12:46:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:46:26,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-07 12:46:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:46:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-07 12:46:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:46:26,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:46:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:46:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 12:46:26,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:46:26,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314209666] [2021-11-07 12:46:26,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314209666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:46:26,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:46:26,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:46:26,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746028178] [2021-11-07 12:46:26,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:46:26,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:46:26,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:46:26,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:46:26,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:46:26,741 INFO L87 Difference]: Start difference. First operand 14041 states and 19695 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 12:46:28,789 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 [] [2021-11-07 12:46:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:46:35,385 INFO L93 Difference]: Finished difference Result 28452 states and 40029 transitions. [2021-11-07 12:46:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:46:35,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 234 [2021-11-07 12:46:35,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:46:35,463 INFO L225 Difference]: With dead ends: 28452 [2021-11-07 12:46:35,463 INFO L226 Difference]: Without dead ends: 14615 [2021-11-07 12:46:35,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.51ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:46:35,530 INFO L933 BasicCegarLoop]: 4357 mSDtfsCounter, 287 mSDsluCounter, 7472 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 87 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7121.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 11829 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.34ms SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7816.68ms IncrementalHoareTripleChecker+Time [2021-11-07 12:46:35,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 11829 Invalid, 1445 Unknown, 0 Unchecked, 24.34ms Time], IncrementalHoareTripleChecker [87 Valid, 1357 Invalid, 1 Unknown, 0 Unchecked, 7816.68ms Time] [2021-11-07 12:46:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14615 states. [2021-11-07 12:46:36,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14615 to 14043. [2021-11-07 12:46:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14043 states, 13562 states have (on average 1.352971538121221) internal successors, (18349), 13614 states have internal predecessors, (18349), 316 states have call successors, (316), 80 states have call predecessors, (316), 164 states have return successors, (1032), 364 states have call predecessors, (1032), 316 states have call successors, (1032) [2021-11-07 12:46:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14043 states to 14043 states and 19697 transitions. [2021-11-07 12:46:36,469 INFO L78 Accepts]: Start accepts. Automaton has 14043 states and 19697 transitions. Word has length 234 [2021-11-07 12:46:36,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:46:36,469 INFO L470 AbstractCegarLoop]: Abstraction has 14043 states and 19697 transitions. [2021-11-07 12:46:36,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 12:46:36,470 INFO L276 IsEmpty]: Start isEmpty. Operand 14043 states and 19697 transitions. [2021-11-07 12:46:36,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-07 12:46:36,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:46:36,508 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-07 12:46:36,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 12:46:36,508 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:46:36,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:46:36,509 INFO L85 PathProgramCache]: Analyzing trace with hash -112933994, now seen corresponding path program 1 times [2021-11-07 12:46:36,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:46:36,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837406288] [2021-11-07 12:46:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:46:36,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:46:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:46:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-07 12:46:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:46:36,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-07 12:46:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:46:36,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-07 12:46:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:46:36,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:46:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:46:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 12:46:36,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:46:36,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837406288] [2021-11-07 12:46:36,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837406288] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:46:36,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511336301] [2021-11-07 12:46:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:46:36,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:46:36,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:46:36,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:46:36,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 12:46:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:46:46,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 3837 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 12:46:46,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:46:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 12:46:47,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 12:46:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 12:46:47,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511336301] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 12:46:47,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 12:46:47,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2021-11-07 12:46:47,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298754341] [2021-11-07 12:46:47,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 12:46:47,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 12:46:47,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:46:47,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 12:46:47,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 12:46:47,696 INFO L87 Difference]: Start difference. First operand 14043 states and 19697 transitions. Second operand has 8 states, 8 states have (on average 35.625) internal successors, (285), 7 states have internal predecessors, (285), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 12:46:49,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:46:57,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:46:58,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:46:58,446 INFO L93 Difference]: Finished difference Result 28595 states and 40312 transitions. [2021-11-07 12:46:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:46:58,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 35.625) internal successors, (285), 7 states have internal predecessors, (285), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 236 [2021-11-07 12:46:58,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:46:58,515 INFO L225 Difference]: With dead ends: 28595 [2021-11-07 12:46:58,515 INFO L226 Difference]: Without dead ends: 14757 [2021-11-07 12:46:58,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 97.35ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:46:58,562 INFO L933 BasicCegarLoop]: 4332 mSDtfsCounter, 3634 mSDsluCounter, 15958 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 202 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9227.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3678 SdHoareTripleChecker+Valid, 20290 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.39ms SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9975.42ms IncrementalHoareTripleChecker+Time [2021-11-07 12:46:58,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3678 Valid, 20290 Invalid, 1963 Unknown, 0 Unchecked, 32.39ms Time], IncrementalHoareTripleChecker [202 Valid, 1760 Invalid, 1 Unknown, 0 Unchecked, 9975.42ms Time] [2021-11-07 12:46:58,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14757 states. [2021-11-07 12:46:59,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14757 to 14185. [2021-11-07 12:46:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14185 states, 13704 states have (on average 1.3493140688849972) internal successors, (18491), 13756 states have internal predecessors, (18491), 316 states have call successors, (316), 80 states have call predecessors, (316), 164 states have return successors, (1032), 364 states have call predecessors, (1032), 316 states have call successors, (1032) [2021-11-07 12:46:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14185 states to 14185 states and 19839 transitions. [2021-11-07 12:46:59,328 INFO L78 Accepts]: Start accepts. Automaton has 14185 states and 19839 transitions. Word has length 236 [2021-11-07 12:46:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:46:59,328 INFO L470 AbstractCegarLoop]: Abstraction has 14185 states and 19839 transitions. [2021-11-07 12:46:59,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.625) internal successors, (285), 7 states have internal predecessors, (285), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 12:46:59,328 INFO L276 IsEmpty]: Start isEmpty. Operand 14185 states and 19839 transitions. [2021-11-07 12:46:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-07 12:46:59,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:46:59,355 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-07 12:46:59,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 12:46:59,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-07 12:46:59,580 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:46:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:46:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1604472582, now seen corresponding path program 2 times [2021-11-07 12:46:59,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:46:59,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130364299] [2021-11-07 12:46:59,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:46:59,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:46:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:46:59,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-07 12:46:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-07 12:47:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:00,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-07 12:47:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:00,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:47:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 12:47:00,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:47:00,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130364299] [2021-11-07 12:47:00,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130364299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:47:00,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:47:00,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 12:47:00,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178564878] [2021-11-07 12:47:00,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:47:00,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 12:47:00,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:47:00,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 12:47:00,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-07 12:47:00,311 INFO L87 Difference]: Start difference. First operand 14185 states and 19839 transitions. Second operand has 10 states, 10 states have (on average 22.5) internal successors, (225), 9 states have internal predecessors, (225), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 12:47:02,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:47:04,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:47:12,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:47:20,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:47:20,768 INFO L93 Difference]: Finished difference Result 36246 states and 52722 transitions. [2021-11-07 12:47:20,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 12:47:20,772 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.5) internal successors, (225), 9 states have internal predecessors, (225), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 242 [2021-11-07 12:47:20,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:47:20,877 INFO L225 Difference]: With dead ends: 36246 [2021-11-07 12:47:20,877 INFO L226 Difference]: Without dead ends: 22276 [2021-11-07 12:47:20,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 839.85ms TimeCoverageRelationStatistics Valid=280, Invalid=980, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 12:47:20,959 INFO L933 BasicCegarLoop]: 8539 mSDtfsCounter, 4920 mSDsluCounter, 61507 mSDsCounter, 0 mSdLazyCounter, 4200 mSolverCounterSat, 258 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16740.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4920 SdHoareTripleChecker+Valid, 70046 SdHoareTripleChecker+Invalid, 4459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 83.44ms SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 4200 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18400.93ms IncrementalHoareTripleChecker+Time [2021-11-07 12:47:20,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4920 Valid, 70046 Invalid, 4459 Unknown, 0 Unchecked, 83.44ms Time], IncrementalHoareTripleChecker [258 Valid, 4200 Invalid, 1 Unknown, 0 Unchecked, 18400.93ms Time] [2021-11-07 12:47:20,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22276 states. [2021-11-07 12:47:21,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22276 to 21174. [2021-11-07 12:47:22,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21174 states, 20451 states have (on average 1.3501051293335289) internal successors, (27611), 20527 states have internal predecessors, (27611), 472 states have call successors, (472), 120 states have call predecessors, (472), 250 states have return successors, (2076), 550 states have call predecessors, (2076), 472 states have call successors, (2076) [2021-11-07 12:47:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21174 states to 21174 states and 30159 transitions. [2021-11-07 12:47:22,069 INFO L78 Accepts]: Start accepts. Automaton has 21174 states and 30159 transitions. Word has length 242 [2021-11-07 12:47:22,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:47:22,070 INFO L470 AbstractCegarLoop]: Abstraction has 21174 states and 30159 transitions. [2021-11-07 12:47:22,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.5) internal successors, (225), 9 states have internal predecessors, (225), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 12:47:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 21174 states and 30159 transitions. [2021-11-07 12:47:22,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-07 12:47:22,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:47:22,095 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-07 12:47:22,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 12:47:22,096 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:47:22,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:47:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1218517416, now seen corresponding path program 1 times [2021-11-07 12:47:22,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:47:22,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638733015] [2021-11-07 12:47:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:47:22,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:47:22,180 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 12:47:22,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994071352] [2021-11-07 12:47:22,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:47:22,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:47:22,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:47:22,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:47:22,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 12:47:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:23,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 4053 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 12:47:23,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:47:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 12:47:23,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:47:23,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:47:23,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638733015] [2021-11-07 12:47:23,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 12:47:23,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994071352] [2021-11-07 12:47:23,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994071352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:47:23,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:47:23,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:47:23,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935452011] [2021-11-07 12:47:23,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:47:23,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:47:23,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:47:23,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:47:23,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:47:23,677 INFO L87 Difference]: Start difference. First operand 21174 states and 30159 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 12:47:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:47:25,271 INFO L93 Difference]: Finished difference Result 55436 states and 78045 transitions. [2021-11-07 12:47:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:47:25,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 256 [2021-11-07 12:47:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:47:25,395 INFO L225 Difference]: With dead ends: 55436 [2021-11-07 12:47:25,395 INFO L226 Difference]: Without dead ends: 34477 [2021-11-07 12:47:25,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:47:25,484 INFO L933 BasicCegarLoop]: 6999 mSDtfsCounter, 2897 mSDsluCounter, 4375 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2910 SdHoareTripleChecker+Valid, 11374 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.47ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 130.74ms IncrementalHoareTripleChecker+Time [2021-11-07 12:47:25,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2910 Valid, 11374 Invalid, 88 Unknown, 0 Unchecked, 9.47ms Time], IncrementalHoareTripleChecker [34 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 130.74ms Time] [2021-11-07 12:47:25,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34477 states. [2021-11-07 12:47:26,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34477 to 22740. [2021-11-07 12:47:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22740 states, 22017 states have (on average 1.3472771040559568) internal successors, (29663), 22093 states have internal predecessors, (29663), 472 states have call successors, (472), 120 states have call predecessors, (472), 250 states have return successors, (2076), 550 states have call predecessors, (2076), 472 states have call successors, (2076) [2021-11-07 12:47:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22740 states to 22740 states and 32211 transitions. [2021-11-07 12:47:26,876 INFO L78 Accepts]: Start accepts. Automaton has 22740 states and 32211 transitions. Word has length 256 [2021-11-07 12:47:26,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:47:26,876 INFO L470 AbstractCegarLoop]: Abstraction has 22740 states and 32211 transitions. [2021-11-07 12:47:26,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 12:47:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 22740 states and 32211 transitions. [2021-11-07 12:47:26,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-07 12:47:26,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:47:26,904 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-07 12:47:26,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 12:47:27,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 12:47:27,132 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:47:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:47:27,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2066685334, now seen corresponding path program 1 times [2021-11-07 12:47:27,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:47:27,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855301525] [2021-11-07 12:47:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:47:27,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:47:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:27,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-07 12:47:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:27,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-07 12:47:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-07 12:47:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:27,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:47:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 12:47:27,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:47:27,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855301525] [2021-11-07 12:47:27,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855301525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:47:27,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:47:27,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:47:27,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607132349] [2021-11-07 12:47:27,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:47:27,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:47:27,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:47:27,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:47:27,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:47:27,457 INFO L87 Difference]: Start difference. First operand 22740 states and 32211 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 12:47:29,512 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 [] [2021-11-07 12:47:36,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:47:36,433 INFO L93 Difference]: Finished difference Result 46189 states and 67723 transitions. [2021-11-07 12:47:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:47:36,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 259 [2021-11-07 12:47:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:47:36,555 INFO L225 Difference]: With dead ends: 46189 [2021-11-07 12:47:36,555 INFO L226 Difference]: Without dead ends: 23664 [2021-11-07 12:47:36,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.75ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:47:36,694 INFO L933 BasicCegarLoop]: 4353 mSDtfsCounter, 287 mSDsluCounter, 7519 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 86 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7150.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 11872 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.47ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7867.25ms IncrementalHoareTripleChecker+Time [2021-11-07 12:47:36,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 11872 Invalid, 1390 Unknown, 0 Unchecked, 20.47ms Time], IncrementalHoareTripleChecker [86 Valid, 1303 Invalid, 1 Unknown, 0 Unchecked, 7867.25ms Time] [2021-11-07 12:47:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23664 states. [2021-11-07 12:47:37,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23664 to 22746. [2021-11-07 12:47:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22746 states, 22023 states have (on average 1.3471824910321029) internal successors, (29669), 22099 states have internal predecessors, (29669), 472 states have call successors, (472), 120 states have call predecessors, (472), 250 states have return successors, (2076), 550 states have call predecessors, (2076), 472 states have call successors, (2076) [2021-11-07 12:47:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22746 states to 22746 states and 32217 transitions. [2021-11-07 12:47:37,882 INFO L78 Accepts]: Start accepts. Automaton has 22746 states and 32217 transitions. Word has length 259 [2021-11-07 12:47:37,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:47:37,882 INFO L470 AbstractCegarLoop]: Abstraction has 22746 states and 32217 transitions. [2021-11-07 12:47:37,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 12:47:37,883 INFO L276 IsEmpty]: Start isEmpty. Operand 22746 states and 32217 transitions. [2021-11-07 12:47:37,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-07 12:47:37,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:47:37,908 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-07 12:47:37,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 12:47:37,909 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:47:37,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:47:37,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1233588264, now seen corresponding path program 1 times [2021-11-07 12:47:37,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:47:37,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480957215] [2021-11-07 12:47:37,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:47:37,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:47:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:38,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-07 12:47:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:38,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-07 12:47:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:38,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-07 12:47:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:47:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 12:47:38,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:47:38,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480957215] [2021-11-07 12:47:38,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480957215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:47:38,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:47:38,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:47:38,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361499182] [2021-11-07 12:47:38,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:47:38,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:47:38,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:47:38,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:47:38,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:47:38,483 INFO L87 Difference]: Start difference. First operand 22746 states and 32217 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 12:47:40,531 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 [] [2021-11-07 12:47:47,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:47:47,262 INFO L93 Difference]: Finished difference Result 47065 states and 69019 transitions. [2021-11-07 12:47:47,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:47:47,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 259 [2021-11-07 12:47:47,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:47:47,352 INFO L225 Difference]: With dead ends: 47065 [2021-11-07 12:47:47,353 INFO L226 Difference]: Without dead ends: 24534 [2021-11-07 12:47:47,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.08ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:47:47,448 INFO L933 BasicCegarLoop]: 4452 mSDtfsCounter, 483 mSDsluCounter, 12039 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 88 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6879.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 16491 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.36ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7580.58ms IncrementalHoareTripleChecker+Time [2021-11-07 12:47:47,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 16491 Invalid, 1542 Unknown, 0 Unchecked, 23.36ms Time], IncrementalHoareTripleChecker [88 Valid, 1453 Invalid, 1 Unknown, 0 Unchecked, 7580.58ms Time] [2021-11-07 12:47:47,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24534 states. [2021-11-07 12:47:48,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24534 to 22758. [2021-11-07 12:47:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22758 states, 22035 states have (on average 1.3469934195597912) internal successors, (29681), 22111 states have internal predecessors, (29681), 472 states have call successors, (472), 120 states have call predecessors, (472), 250 states have return successors, (2076), 550 states have call predecessors, (2076), 472 states have call successors, (2076) [2021-11-07 12:47:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22758 states to 22758 states and 32229 transitions. [2021-11-07 12:47:48,644 INFO L78 Accepts]: Start accepts. Automaton has 22758 states and 32229 transitions. Word has length 259 [2021-11-07 12:47:48,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:47:48,645 INFO L470 AbstractCegarLoop]: Abstraction has 22758 states and 32229 transitions. [2021-11-07 12:47:48,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 12:47:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 22758 states and 32229 transitions. [2021-11-07 12:47:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-07 12:47:48,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:47:48,667 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-07 12:47:48,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 12:47:48,668 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:47:48,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:47:48,668 INFO L85 PathProgramCache]: Analyzing trace with hash 165804043, now seen corresponding path program 1 times [2021-11-07 12:47:48,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:47:48,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931398746] [2021-11-07 12:47:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:47:48,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:47:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:49,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-07 12:47:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:49,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-07 12:47:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:49,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:47:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 12:47:49,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:47:49,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931398746] [2021-11-07 12:47:49,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931398746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:47:49,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:47:49,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 12:47:49,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370153444] [2021-11-07 12:47:49,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:47:49,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 12:47:49,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:47:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 12:47:49,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-07 12:47:49,901 INFO L87 Difference]: Start difference. First operand 22758 states and 32229 transitions. Second operand has 12 states, 12 states have (on average 18.5) internal successors, (222), 11 states have internal predecessors, (222), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 12:47:51,949 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 [] [2021-11-07 12:47:54,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:47:56,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:47:58,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:48:00,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:48:15,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:48:15,291 INFO L93 Difference]: Finished difference Result 54164 states and 79988 transitions. [2021-11-07 12:48:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 12:48:15,293 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 11 states have internal predecessors, (222), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 237 [2021-11-07 12:48:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:48:15,415 INFO L225 Difference]: With dead ends: 54164 [2021-11-07 12:48:15,416 INFO L226 Difference]: Without dead ends: 31595 [2021-11-07 12:48:15,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 1785.83ms TimeCoverageRelationStatistics Valid=639, Invalid=2331, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 12:48:15,525 INFO L933 BasicCegarLoop]: 4604 mSDtfsCounter, 14616 mSDsluCounter, 42066 mSDsCounter, 0 mSdLazyCounter, 4794 mSolverCounterSat, 802 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19661.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14616 SdHoareTripleChecker+Valid, 46670 SdHoareTripleChecker+Invalid, 5601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.51ms SdHoareTripleChecker+Time, 802 IncrementalHoareTripleChecker+Valid, 4794 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21864.61ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:15,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14616 Valid, 46670 Invalid, 5601 Unknown, 0 Unchecked, 79.51ms Time], IncrementalHoareTripleChecker [802 Valid, 4794 Invalid, 5 Unknown, 0 Unchecked, 21864.61ms Time] [2021-11-07 12:48:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31595 states. [2021-11-07 12:48:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31595 to 30181. [2021-11-07 12:48:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30181 states, 29230 states have (on average 1.3470407115976737) internal successors, (39374), 29326 states have internal predecessors, (39374), 620 states have call successors, (620), 156 states have call predecessors, (620), 330 states have return successors, (3374), 730 states have call predecessors, (3374), 620 states have call successors, (3374) [2021-11-07 12:48:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30181 states to 30181 states and 43368 transitions. [2021-11-07 12:48:17,444 INFO L78 Accepts]: Start accepts. Automaton has 30181 states and 43368 transitions. Word has length 237 [2021-11-07 12:48:17,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:17,445 INFO L470 AbstractCegarLoop]: Abstraction has 30181 states and 43368 transitions. [2021-11-07 12:48:17,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 11 states have internal predecessors, (222), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 12:48:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 30181 states and 43368 transitions. [2021-11-07 12:48:17,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-07 12:48:17,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:17,485 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-07 12:48:17,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 12:48:17,485 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:48:17,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:17,485 INFO L85 PathProgramCache]: Analyzing trace with hash -627349177, now seen corresponding path program 1 times [2021-11-07 12:48:17,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:17,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072620354] [2021-11-07 12:48:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:17,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-07 12:48:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:17,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-07 12:48:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:17,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 12:48:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:18,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:48:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:18,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-07 12:48:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:18,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-07 12:48:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 12:48:18,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:18,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072620354] [2021-11-07 12:48:18,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072620354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:18,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:48:18,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 12:48:18,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712303243] [2021-11-07 12:48:18,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:18,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 12:48:18,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:18,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 12:48:18,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-07 12:48:18,146 INFO L87 Difference]: Start difference. First operand 30181 states and 43368 transitions. Second operand has 10 states, 10 states have (on average 25.8) internal successors, (258), 7 states have internal predecessors, (258), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-07 12:48:20,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:48:24,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:48:29,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:48:31,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:48:31,377 INFO L93 Difference]: Finished difference Result 61397 states and 91243 transitions. [2021-11-07 12:48:31,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 12:48:31,378 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 25.8) internal successors, (258), 7 states have internal predecessors, (258), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 279 [2021-11-07 12:48:31,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:48:31,526 INFO L225 Difference]: With dead ends: 61397 [2021-11-07 12:48:31,526 INFO L226 Difference]: Without dead ends: 31431 [2021-11-07 12:48:31,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 226.64ms TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-07 12:48:31,811 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 354 mSDsluCounter, 33590 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 97 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10410.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 37944 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.00ms SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11297.20ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:31,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 37944 Invalid, 2012 Unknown, 0 Unchecked, 36.00ms Time], IncrementalHoareTripleChecker [97 Valid, 1912 Invalid, 3 Unknown, 0 Unchecked, 11297.20ms Time] [2021-11-07 12:48:31,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31431 states. [2021-11-07 12:48:33,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31431 to 30213. [2021-11-07 12:48:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30213 states, 29254 states have (on average 1.3467559991795994) internal successors, (39398), 29350 states have internal predecessors, (39398), 620 states have call successors, (620), 156 states have call predecessors, (620), 338 states have return successors, (3398), 738 states have call predecessors, (3398), 620 states have call successors, (3398) [2021-11-07 12:48:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30213 states to 30213 states and 43416 transitions. [2021-11-07 12:48:33,475 INFO L78 Accepts]: Start accepts. Automaton has 30213 states and 43416 transitions. Word has length 279 [2021-11-07 12:48:33,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:33,476 INFO L470 AbstractCegarLoop]: Abstraction has 30213 states and 43416 transitions. [2021-11-07 12:48:33,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.8) internal successors, (258), 7 states have internal predecessors, (258), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-07 12:48:33,476 INFO L276 IsEmpty]: Start isEmpty. Operand 30213 states and 43416 transitions. [2021-11-07 12:48:33,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-07 12:48:33,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:33,512 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-07 12:48:33,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 12:48:33,512 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:48:33,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:33,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1272187478, now seen corresponding path program 1 times [2021-11-07 12:48:33,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:33,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936869136] [2021-11-07 12:48:33,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:33,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:33,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-07 12:48:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:33,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-07 12:48:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:33,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 12:48:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:34,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:48:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-07 12:48:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:34,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-07 12:48:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 12:48:34,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:34,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936869136] [2021-11-07 12:48:34,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936869136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:34,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:48:34,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 12:48:34,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385330592] [2021-11-07 12:48:34,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:34,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:48:34,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:48:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:48:34,130 INFO L87 Difference]: Start difference. First operand 30213 states and 43416 transitions. Second operand has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 12:48:36,180 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 [] [2021-11-07 12:48:43,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:48:45,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:48:45,620 INFO L93 Difference]: Finished difference Result 61429 states and 91251 transitions. [2021-11-07 12:48:45,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 12:48:45,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 280 [2021-11-07 12:48:45,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:48:45,748 INFO L225 Difference]: With dead ends: 61429 [2021-11-07 12:48:45,748 INFO L226 Difference]: Without dead ends: 31431 [2021-11-07 12:48:45,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.96ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-07 12:48:45,901 INFO L933 BasicCegarLoop]: 4363 mSDtfsCounter, 346 mSDsluCounter, 16215 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 88 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8528.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 20578 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.00ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9593.62ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:45,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 20578 Invalid, 1582 Unknown, 0 Unchecked, 27.00ms Time], IncrementalHoareTripleChecker [88 Valid, 1493 Invalid, 1 Unknown, 0 Unchecked, 9593.62ms Time] [2021-11-07 12:48:45,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31431 states. [2021-11-07 12:48:47,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31431 to 30225. [2021-11-07 12:48:47,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30225 states, 29266 states have (on average 1.346545479395886) internal successors, (39408), 29362 states have internal predecessors, (39408), 620 states have call successors, (620), 156 states have call predecessors, (620), 338 states have return successors, (3398), 738 states have call predecessors, (3398), 620 states have call successors, (3398) [2021-11-07 12:48:47,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30225 states to 30225 states and 43426 transitions. [2021-11-07 12:48:47,639 INFO L78 Accepts]: Start accepts. Automaton has 30225 states and 43426 transitions. Word has length 280 [2021-11-07 12:48:47,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:47,639 INFO L470 AbstractCegarLoop]: Abstraction has 30225 states and 43426 transitions. [2021-11-07 12:48:47,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 12:48:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 30225 states and 43426 transitions. [2021-11-07 12:48:47,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-07 12:48:47,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:47,674 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-07 12:48:47,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 12:48:47,674 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:48:47,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:47,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1875994518, now seen corresponding path program 1 times [2021-11-07 12:48:47,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:47,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576341490] [2021-11-07 12:48:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:47,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:48,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-07 12:48:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:48,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-07 12:48:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:48,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 12:48:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:48,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-07 12:48:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-07 12:48:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-07 12:48:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 12:48:49,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:49,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576341490] [2021-11-07 12:48:49,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576341490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:49,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:48:49,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 12:48:49,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522636470] [2021-11-07 12:48:49,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:49,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 12:48:49,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:49,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 12:48:49,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-07 12:48:49,592 INFO L87 Difference]: Start difference. First operand 30225 states and 43426 transitions. Second operand has 15 states, 14 states have (on average 18.785714285714285) internal successors, (263), 14 states have internal predecessors, (263), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-07 12:48:51,644 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 [] [2021-11-07 12:48:53,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:48:56,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:48:58,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:49:00,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:49:23,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:23,560 INFO L93 Difference]: Finished difference Result 69330 states and 103825 transitions. [2021-11-07 12:49:23,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 12:49:23,561 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 18.785714285714285) internal successors, (263), 14 states have internal predecessors, (263), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 284 [2021-11-07 12:49:23,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:23,808 INFO L225 Difference]: With dead ends: 69330 [2021-11-07 12:49:23,809 INFO L226 Difference]: Without dead ends: 39314 [2021-11-07 12:49:24,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 1774.93ms TimeCoverageRelationStatistics Valid=338, Invalid=2112, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 12:49:24,027 INFO L933 BasicCegarLoop]: 8469 mSDtfsCounter, 4973 mSDsluCounter, 97571 mSDsCounter, 0 mSdLazyCounter, 6951 mSolverCounterSat, 288 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26596.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4977 SdHoareTripleChecker+Valid, 106040 SdHoareTripleChecker+Invalid, 7244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 138.96ms SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 6951 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29830.56ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:24,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4977 Valid, 106040 Invalid, 7244 Unknown, 0 Unchecked, 138.96ms Time], IncrementalHoareTripleChecker [288 Valid, 6951 Invalid, 5 Unknown, 0 Unchecked, 29830.56ms Time] [2021-11-07 12:49:24,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39314 states. [2021-11-07 12:49:26,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39314 to 37594. [2021-11-07 12:49:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37594 states, 36417 states have (on average 1.3472554026965429) internal successors, (49063), 36533 states have internal predecessors, (49063), 772 states have call successors, (772), 194 states have call predecessors, (772), 404 states have return successors, (4378), 906 states have call predecessors, (4378), 772 states have call successors, (4378) [2021-11-07 12:49:26,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37594 states to 37594 states and 54213 transitions. [2021-11-07 12:49:26,273 INFO L78 Accepts]: Start accepts. Automaton has 37594 states and 54213 transitions. Word has length 284 [2021-11-07 12:49:26,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:26,274 INFO L470 AbstractCegarLoop]: Abstraction has 37594 states and 54213 transitions. [2021-11-07 12:49:26,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 18.785714285714285) internal successors, (263), 14 states have internal predecessors, (263), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-07 12:49:26,274 INFO L276 IsEmpty]: Start isEmpty. Operand 37594 states and 54213 transitions. [2021-11-07 12:49:26,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-07 12:49:26,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:26,323 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-07 12:49:26,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 12:49:26,323 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:26,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:26,324 INFO L85 PathProgramCache]: Analyzing trace with hash -10143716, now seen corresponding path program 1 times [2021-11-07 12:49:26,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:26,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111491507] [2021-11-07 12:49:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:26,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:26,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-07 12:49:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:26,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-07 12:49:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:26,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 12:49:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:26,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:49:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:26,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-07 12:49:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:26,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-07 12:49:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:26,965 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 12:49:26,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:26,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111491507] [2021-11-07 12:49:26,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111491507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:26,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:49:26,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 12:49:26,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534354594] [2021-11-07 12:49:26,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:26,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 12:49:26,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:26,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 12:49:26,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:49:26,968 INFO L87 Difference]: Start difference. First operand 37594 states and 54213 transitions. Second operand has 9 states, 9 states have (on average 29.22222222222222) internal successors, (263), 7 states have internal predecessors, (263), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-07 12:49:29,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:49:31,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:49:51,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:49:58,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:50:01,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:50:15,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:50:15,807 INFO L93 Difference]: Finished difference Result 187694 states and 344133 transitions. [2021-11-07 12:50:15,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 12:50:15,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 29.22222222222222) internal successors, (263), 7 states have internal predecessors, (263), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 284 [2021-11-07 12:50:15,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:50:17,679 INFO L225 Difference]: With dead ends: 187694 [2021-11-07 12:50:17,679 INFO L226 Difference]: Without dead ends: 150309 [2021-11-07 12:50:18,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 237.85ms TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-07 12:50:18,283 INFO L933 BasicCegarLoop]: 13689 mSDtfsCounter, 30036 mSDsluCounter, 56236 mSDsCounter, 0 mSdLazyCounter, 11703 mSolverCounterSat, 3129 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35466.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30353 SdHoareTripleChecker+Valid, 69925 SdHoareTripleChecker+Invalid, 14834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 154.24ms SdHoareTripleChecker+Time, 3129 IncrementalHoareTripleChecker+Valid, 11703 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39371.88ms IncrementalHoareTripleChecker+Time [2021-11-07 12:50:18,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30353 Valid, 69925 Invalid, 14834 Unknown, 0 Unchecked, 154.24ms Time], IncrementalHoareTripleChecker [3129 Valid, 11703 Invalid, 2 Unknown, 0 Unchecked, 39371.88ms Time] [2021-11-07 12:50:18,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150309 states. [2021-11-07 12:50:25,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150309 to 79335. [2021-11-07 12:50:25,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79335 states, 75682 states have (on average 1.3442430168335933) internal successors, (101735), 75942 states have internal predecessors, (101735), 1896 states have call successors, (1896), 470 states have call predecessors, (1896), 1756 states have return successors, (33908), 3018 states have call predecessors, (33908), 1896 states have call successors, (33908) [2021-11-07 12:50:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79335 states to 79335 states and 137539 transitions. [2021-11-07 12:50:26,130 INFO L78 Accepts]: Start accepts. Automaton has 79335 states and 137539 transitions. Word has length 284 [2021-11-07 12:50:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:50:26,131 INFO L470 AbstractCegarLoop]: Abstraction has 79335 states and 137539 transitions. [2021-11-07 12:50:26,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.22222222222222) internal successors, (263), 7 states have internal predecessors, (263), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-07 12:50:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 79335 states and 137539 transitions. [2021-11-07 12:50:26,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-07 12:50:26,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:50:26,197 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-07 12:50:26,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 12:50:26,198 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:50:26,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:50:26,198 INFO L85 PathProgramCache]: Analyzing trace with hash 883342622, now seen corresponding path program 1 times [2021-11-07 12:50:26,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:50:26,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885467596] [2021-11-07 12:50:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:50:26,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:50:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:50:27,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-07 12:50:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:50:27,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-07 12:50:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:50:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-07 12:50:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:50:27,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-07 12:50:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:50:28,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-07 12:50:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:50:28,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-07 12:50:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:50:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 12:50:28,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:50:28,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885467596] [2021-11-07 12:50:28,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885467596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:50:28,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:50:28,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 12:50:28,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542263986] [2021-11-07 12:50:28,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:50:28,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 12:50:28,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:50:28,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 12:50:28,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-07 12:50:28,200 INFO L87 Difference]: Start difference. First operand 79335 states and 137539 transitions. Second operand has 11 states, 11 states have (on average 23.90909090909091) internal successors, (263), 10 states have internal predecessors, (263), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 12:50:30,242 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 [] [2021-11-07 12:50:32,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:50:34,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:50:37,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:50:39,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:50:48,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:50:58,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:50:58,571 INFO L93 Difference]: Finished difference Result 154180 states and 299845 transitions. [2021-11-07 12:50:58,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 12:50:58,573 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.90909090909091) internal successors, (263), 10 states have internal predecessors, (263), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 284 [2021-11-07 12:50:58,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:50:59,295 INFO L225 Difference]: With dead ends: 154180 [2021-11-07 12:50:59,296 INFO L226 Difference]: Without dead ends: 82413 [2021-11-07 12:51:00,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1229.18ms TimeCoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 12:51:00,429 INFO L933 BasicCegarLoop]: 4486 mSDtfsCounter, 5543 mSDsluCounter, 37573 mSDsCounter, 0 mSdLazyCounter, 3443 mSolverCounterSat, 316 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19985.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5543 SdHoareTripleChecker+Valid, 42059 SdHoareTripleChecker+Invalid, 3764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.52ms SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 3443 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22589.55ms IncrementalHoareTripleChecker+Time [2021-11-07 12:51:00,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5543 Valid, 42059 Invalid, 3764 Unknown, 0 Unchecked, 67.52ms Time], IncrementalHoareTripleChecker [316 Valid, 3443 Invalid, 5 Unknown, 0 Unchecked, 22589.55ms Time] [2021-11-07 12:51:00,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82413 states. [2021-11-07 12:51:05,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82413 to 79195. [2021-11-07 12:51:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79195 states, 75566 states have (on average 1.3444803218378636) internal successors, (101597), 75824 states have internal predecessors, (101597), 1888 states have call successors, (1888), 468 states have call predecessors, (1888), 1740 states have return successors, (33000), 2998 states have call predecessors, (33000), 1888 states have call successors, (33000) [2021-11-07 12:51:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79195 states to 79195 states and 136485 transitions. [2021-11-07 12:51:06,178 INFO L78 Accepts]: Start accepts. Automaton has 79195 states and 136485 transitions. Word has length 284 [2021-11-07 12:51:06,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:51:06,179 INFO L470 AbstractCegarLoop]: Abstraction has 79195 states and 136485 transitions. [2021-11-07 12:51:06,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.90909090909091) internal successors, (263), 10 states have internal predecessors, (263), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 12:51:06,179 INFO L276 IsEmpty]: Start isEmpty. Operand 79195 states and 136485 transitions. [2021-11-07 12:51:06,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-07 12:51:06,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:51:06,253 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:51:06,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 12:51:06,254 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:51:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:51:06,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1155783433, now seen corresponding path program 1 times [2021-11-07 12:51:06,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:51:06,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081611662] [2021-11-07 12:51:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:51:06,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:51:06,322 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 12:51:06,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037294654] [2021-11-07 12:51:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:51:06,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:51:06,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:51:06,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:51:06,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process