./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-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-5f08f0f [2021-11-05 16:09:03,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:09:03,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:09:03,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:09:03,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:09:03,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:09:03,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:09:03,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:09:03,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:09:03,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:09:03,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:09:03,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:09:03,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:09:03,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:09:03,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:09:03,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:09:03,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:09:03,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:09:03,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:09:03,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:09:03,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:09:03,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:09:03,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:09:03,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:09:03,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:09:03,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:09:03,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:09:03,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:09:03,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:09:03,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:09:03,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:09:03,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:09:03,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:09:03,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:09:03,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:09:03,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:09:03,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:09:03,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:09:03,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:09:03,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:09:03,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:09:03,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:09:03,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:09:03,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:09:03,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:09:03,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:09:03,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:09:03,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:09:03,832 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:09:03,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:09:03,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:09:03,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:09:03,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:09:03,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:09:03,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:09:03,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:09:03,834 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:09:03,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:09:03,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:09:03,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:09:03,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:09:03,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:09:03,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:09:03,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:09:03,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:09:03,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:09:03,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:09:03,844 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:09:03,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:09:03,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:09:03,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:09:03,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 [2021-11-05 16:09:04,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:09:04,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:09:04,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:09:04,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:09:04,105 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:09:04,105 INFO L432 ainManager$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 [2021-11-05 16:09:04,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e070403a/36c2cb2dc31e43a09646d9e2483dfb6c/FLAG8337e9f16 [2021-11-05 16:09:04,776 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:09:04,776 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 [2021-11-05 16:09:04,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e070403a/36c2cb2dc31e43a09646d9e2483dfb6c/FLAG8337e9f16 [2021-11-05 16:09:04,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e070403a/36c2cb2dc31e43a09646d9e2483dfb6c [2021-11-05 16:09:04,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:09:04,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:09:04,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:09:04,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:09:04,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:09:04,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:09:04" (1/1) ... [2021-11-05 16:09:04,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100d7458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:09:04, skipping insertion in model container [2021-11-05 16:09:04,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:09:04" (1/1) ... [2021-11-05 16:09:04,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:09:05,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:09:05,439 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-05 16:09:05,664 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] [2021-11-05 16:09:06,106 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-05 16:09:06,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:09:06,157 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:09:06,246 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-05 16:09:06,259 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] [2021-11-05 16:09:06,549 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-05 16:09:06,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:09:06,616 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:09:06,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:09:06 WrapperNode [2021-11-05 16:09:06,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:09:06,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:09:06,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:09:06,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:09:06,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:09:06" (1/1) ... [2021-11-05 16:09:06,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:09:06" (1/1) ... [2021-11-05 16:09:06,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:09:06,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:09:06,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:09:06,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:09:06,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:09:06" (1/1) ... [2021-11-05 16:09:06,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:09:06" (1/1) ... [2021-11-05 16:09:07,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:09:06" (1/1) ... [2021-11-05 16:09:07,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:09:06" (1/1) ... [2021-11-05 16:09:07,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:09:06" (1/1) ... [2021-11-05 16:09:07,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:09:06" (1/1) ... [2021-11-05 16:09:07,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:09:06" (1/1) ... [2021-11-05 16:09:07,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:09:07,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:09:07,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:09:07,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:09:07,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:09:06" (1/1) ... [2021-11-05 16:09:07,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:09:07,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:09:07,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 16:09:07,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 16:09:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:09:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:09:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-05 16:09:07,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-05 16:09:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2021-11-05 16:09:07,623 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2021-11-05 16:09:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2021-11-05 16:09:07,623 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2021-11-05 16:09:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_init_transfer [2021-11-05 16:09:07,623 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_init_transfer [2021-11-05 16:09:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure bulk_irq [2021-11-05 16:09:07,623 INFO L138 BoogieDeclarations]: Found implementation of procedure bulk_irq [2021-11-05 16:09:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:09:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:09:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-05 16:09:07,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-05 16:09:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-05 16:09:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_submit_int_urb [2021-11-05 16:09:07,624 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_submit_int_urb [2021-11-05 16:09:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 16:09:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 16:09:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure int_irq [2021-11-05 16:09:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure int_irq [2021-11-05 16:09:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:09:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:09:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure fill_frame [2021-11-05 16:09:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_frame [2021-11-05 16:09:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_stream_off [2021-11-05 16:09:07,626 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_stream_off [2021-11-05 16:09:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:09:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure isoc_irq [2021-11-05 16:09:07,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isoc_irq [2021-11-05 16:09:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_input_create_urb [2021-11-05 16:09:07,626 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_input_create_urb [2021-11-05 16:09:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:09:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-11-05 16:09:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-11-05 16:09:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-11-05 16:09:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-11-05 16:09:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-11-05 16:09:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-11-05 16:09:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_9 [2021-11-05 16:09:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_9 [2021-11-05 16:09:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:09:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-05 16:09:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-05 16:09:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:09:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:09:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:09:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 16:09:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:09:07,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:09:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-05 16:09:07,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-05 16:09:07,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:09:07,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:09:07,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:09:18,454 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:09:18,455 INFO L299 CfgBuilder]: Removed 2394 assume(true) statements. [2021-11-05 16:09:18,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:09:18 BoogieIcfgContainer [2021-11-05 16:09:18,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:09:18,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:09:18,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:09:18,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:09:18,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:09:04" (1/3) ... [2021-11-05 16:09:18,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c035c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:09:18, skipping insertion in model container [2021-11-05 16:09:18,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:09:06" (2/3) ... [2021-11-05 16:09:18,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c035c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:09:18, skipping insertion in model container [2021-11-05 16:09:18,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:09:18" (3/3) ... [2021-11-05 16:09:18,465 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 [2021-11-05 16:09:18,469 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:09:18,469 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-05 16:09:18,517 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:09:18,523 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 16:09:18,524 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-05 16:09:18,570 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) [2021-11-05 16:09:18,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 16:09:18,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:18,577 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] [2021-11-05 16:09:18,578 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)] === [2021-11-05 16:09:18,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:18,582 INFO L85 PathProgramCache]: Analyzing trace with hash 645787444, now seen corresponding path program 1 times [2021-11-05 16:09:18,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:18,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941435969] [2021-11-05 16:09:18,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:18,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:09:19,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:19,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941435969] [2021-11-05 16:09:19,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941435969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:19,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:19,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:09:19,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75235310] [2021-11-05 16:09:19,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:19,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:19,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:19,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:19,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:19,162 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) [2021-11-05 16:09:21,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:09:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:21,737 INFO L93 Difference]: Finished difference Result 9735 states and 14301 transitions. [2021-11-05 16:09:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:21,739 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 [2021-11-05 16:09:21,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:21,777 INFO L225 Difference]: With dead ends: 9735 [2021-11-05 16:09:21,777 INFO L226 Difference]: Without dead ends: 6385 [2021-11-05 16:09:21,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:21,798 INFO L933 BasicCegarLoop]: 4721 mSDtfsCounter, 4332 mSDsluCounter, 4648 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2063.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4332 SdHoareTripleChecker+Valid, 9369 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.87ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2186.87ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:21,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4332 Valid, 9369 Invalid, 15 Unknown, 0 Unchecked, 29.87ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2186.87ms Time] [2021-11-05 16:09:21,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2021-11-05 16:09:21,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 6385. [2021-11-05 16:09:21,962 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) [2021-11-05 16:09:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6385 states to 6385 states and 8966 transitions. [2021-11-05 16:09:21,983 INFO L78 Accepts]: Start accepts. Automaton has 6385 states and 8966 transitions. Word has length 97 [2021-11-05 16:09:21,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:21,984 INFO L470 AbstractCegarLoop]: Abstraction has 6385 states and 8966 transitions. [2021-11-05 16:09:21,984 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) [2021-11-05 16:09:21,984 INFO L276 IsEmpty]: Start isEmpty. Operand 6385 states and 8966 transitions. [2021-11-05 16:09:21,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 16:09:21,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:21,987 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] [2021-11-05 16:09:21,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:09:21,988 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)] === [2021-11-05 16:09:21,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:21,988 INFO L85 PathProgramCache]: Analyzing trace with hash -27573547, now seen corresponding path program 1 times [2021-11-05 16:09:21,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:21,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185910799] [2021-11-05 16:09:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:21,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:09:22,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:22,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185910799] [2021-11-05 16:09:22,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185910799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:22,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:22,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:09:22,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804977947] [2021-11-05 16:09:22,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:22,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:09:22,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:22,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:09:22,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:09:22,131 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) [2021-11-05 16:09:22,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:22,453 INFO L93 Difference]: Finished difference Result 12562 states and 17681 transitions. [2021-11-05 16:09:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:09:22,453 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 [2021-11-05 16:09:22,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:22,475 INFO L225 Difference]: With dead ends: 12562 [2021-11-05 16:09:22,475 INFO L226 Difference]: Without dead ends: 6384 [2021-11-05 16:09:22,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:09:22,490 INFO L933 BasicCegarLoop]: 8166 mSDtfsCounter, 8236 mSDsluCounter, 4600 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8236 SdHoareTripleChecker+Valid, 12766 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.21ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 118.16ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:22,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8236 Valid, 12766 Invalid, 68 Unknown, 0 Unchecked, 21.21ms Time], IncrementalHoareTripleChecker [34 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 118.16ms Time] [2021-11-05 16:09:22,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2021-11-05 16:09:22,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 6384. [2021-11-05 16:09:22,593 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) [2021-11-05 16:09:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6384 states to 6384 states and 8962 transitions. [2021-11-05 16:09:22,607 INFO L78 Accepts]: Start accepts. Automaton has 6384 states and 8962 transitions. Word has length 100 [2021-11-05 16:09:22,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:22,608 INFO L470 AbstractCegarLoop]: Abstraction has 6384 states and 8962 transitions. [2021-11-05 16:09:22,608 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) [2021-11-05 16:09:22,608 INFO L276 IsEmpty]: Start isEmpty. Operand 6384 states and 8962 transitions. [2021-11-05 16:09:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-05 16:09:22,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:22,612 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] [2021-11-05 16:09:22,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:09:22,613 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)] === [2021-11-05 16:09:22,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:22,613 INFO L85 PathProgramCache]: Analyzing trace with hash 810832890, now seen corresponding path program 1 times [2021-11-05 16:09:22,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:22,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162112820] [2021-11-05 16:09:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:22,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 16:09:22,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:22,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162112820] [2021-11-05 16:09:22,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162112820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:22,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:22,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:09:22,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095659085] [2021-11-05 16:09:22,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:22,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:22,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:22,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:22,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:22,897 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) [2021-11-05 16:09:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:23,262 INFO L93 Difference]: Finished difference Result 18736 states and 26891 transitions. [2021-11-05 16:09:23,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:23,263 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 [2021-11-05 16:09:23,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:23,314 INFO L225 Difference]: With dead ends: 18736 [2021-11-05 16:09:23,314 INFO L226 Difference]: Without dead ends: 12559 [2021-11-05 16:09:23,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:23,343 INFO L933 BasicCegarLoop]: 4814 mSDtfsCounter, 4575 mSDsluCounter, 4433 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4575 SdHoareTripleChecker+Valid, 9247 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.46ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.08ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:23,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4575 Valid, 9247 Invalid, 41 Unknown, 0 Unchecked, 13.46ms Time], IncrementalHoareTripleChecker [12 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 47.08ms Time] [2021-11-05 16:09:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12559 states. [2021-11-05 16:09:23,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12559 to 12547. [2021-11-05 16:09:23,575 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) [2021-11-05 16:09:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12547 states to 12547 states and 17902 transitions. [2021-11-05 16:09:23,607 INFO L78 Accepts]: Start accepts. Automaton has 12547 states and 17902 transitions. Word has length 126 [2021-11-05 16:09:23,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:23,608 INFO L470 AbstractCegarLoop]: Abstraction has 12547 states and 17902 transitions. [2021-11-05 16:09:23,608 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) [2021-11-05 16:09:23,608 INFO L276 IsEmpty]: Start isEmpty. Operand 12547 states and 17902 transitions. [2021-11-05 16:09:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-05 16:09:23,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:23,612 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] [2021-11-05 16:09:23,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:09:23,612 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)] === [2021-11-05 16:09:23,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:23,613 INFO L85 PathProgramCache]: Analyzing trace with hash -633975522, now seen corresponding path program 1 times [2021-11-05 16:09:23,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:23,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55741108] [2021-11-05 16:09:23,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:23,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 16:09:23,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:23,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55741108] [2021-11-05 16:09:23,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55741108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:23,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:23,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:09:23,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646736436] [2021-11-05 16:09:23,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:23,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:23,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:23,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:23,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:23,815 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) [2021-11-05 16:09:24,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:24,076 INFO L93 Difference]: Finished difference Result 12547 states and 17902 transitions. [2021-11-05 16:09:24,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:24,077 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 [2021-11-05 16:09:24,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:24,114 INFO L225 Difference]: With dead ends: 12547 [2021-11-05 16:09:24,114 INFO L226 Difference]: Without dead ends: 12545 [2021-11-05 16:09:24,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:24,123 INFO L933 BasicCegarLoop]: 4638 mSDtfsCounter, 4519 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4519 SdHoareTripleChecker+Valid, 4638 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.69ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:24,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4519 Valid, 4638 Invalid, 1 Unknown, 0 Unchecked, 5.86ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.69ms Time] [2021-11-05 16:09:24,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12545 states. [2021-11-05 16:09:24,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12545 to 12545. [2021-11-05 16:09:24,441 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) [2021-11-05 16:09:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12545 states to 12545 states and 17900 transitions. [2021-11-05 16:09:24,477 INFO L78 Accepts]: Start accepts. Automaton has 12545 states and 17900 transitions. Word has length 127 [2021-11-05 16:09:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:24,478 INFO L470 AbstractCegarLoop]: Abstraction has 12545 states and 17900 transitions. [2021-11-05 16:09:24,479 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) [2021-11-05 16:09:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 12545 states and 17900 transitions. [2021-11-05 16:09:24,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-05 16:09:24,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:24,482 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] [2021-11-05 16:09:24,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:09:24,483 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)] === [2021-11-05 16:09:24,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:24,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1821603972, now seen corresponding path program 1 times [2021-11-05 16:09:24,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:24,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356295323] [2021-11-05 16:09:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:24,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 16:09:24,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:24,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356295323] [2021-11-05 16:09:24,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356295323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:24,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:24,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:09:24,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759426392] [2021-11-05 16:09:24,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:24,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:24,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:24,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:24,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:24,666 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) [2021-11-05 16:09:24,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:24,895 INFO L93 Difference]: Finished difference Result 12545 states and 17900 transitions. [2021-11-05 16:09:24,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:24,895 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 [2021-11-05 16:09:24,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:24,932 INFO L225 Difference]: With dead ends: 12545 [2021-11-05 16:09:24,932 INFO L226 Difference]: Without dead ends: 12543 [2021-11-05 16:09:24,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:24,945 INFO L933 BasicCegarLoop]: 4636 mSDtfsCounter, 4516 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4516 SdHoareTripleChecker+Valid, 4636 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.09ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.51ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:24,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4516 Valid, 4636 Invalid, 1 Unknown, 0 Unchecked, 6.09ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.51ms Time] [2021-11-05 16:09:24,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12543 states. [2021-11-05 16:09:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12543 to 12543. [2021-11-05 16:09:25,318 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) [2021-11-05 16:09:25,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12543 states to 12543 states and 17898 transitions. [2021-11-05 16:09:25,345 INFO L78 Accepts]: Start accepts. Automaton has 12543 states and 17898 transitions. Word has length 128 [2021-11-05 16:09:25,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:25,345 INFO L470 AbstractCegarLoop]: Abstraction has 12543 states and 17898 transitions. [2021-11-05 16:09:25,346 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) [2021-11-05 16:09:25,346 INFO L276 IsEmpty]: Start isEmpty. Operand 12543 states and 17898 transitions. [2021-11-05 16:09:25,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-05 16:09:25,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:25,351 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] [2021-11-05 16:09:25,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:09:25,351 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)] === [2021-11-05 16:09:25,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:25,352 INFO L85 PathProgramCache]: Analyzing trace with hash 635156968, now seen corresponding path program 1 times [2021-11-05 16:09:25,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:25,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215656103] [2021-11-05 16:09:25,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:25,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 16:09:25,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:25,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215656103] [2021-11-05 16:09:25,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215656103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:25,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:25,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:09:25,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758912025] [2021-11-05 16:09:25,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:25,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:25,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:25,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:25,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:25,526 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) [2021-11-05 16:09:25,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:25,684 INFO L93 Difference]: Finished difference Result 12543 states and 17898 transitions. [2021-11-05 16:09:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:25,685 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 [2021-11-05 16:09:25,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:25,719 INFO L225 Difference]: With dead ends: 12543 [2021-11-05 16:09:25,719 INFO L226 Difference]: Without dead ends: 12541 [2021-11-05 16:09:25,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:25,730 INFO L933 BasicCegarLoop]: 4634 mSDtfsCounter, 4513 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4513 SdHoareTripleChecker+Valid, 4634 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.29ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:25,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4513 Valid, 4634 Invalid, 1 Unknown, 0 Unchecked, 4.73ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.29ms Time] [2021-11-05 16:09:25,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12541 states. [2021-11-05 16:09:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12541 to 12541. [2021-11-05 16:09:25,977 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) [2021-11-05 16:09:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12541 states to 12541 states and 17896 transitions. [2021-11-05 16:09:26,006 INFO L78 Accepts]: Start accepts. Automaton has 12541 states and 17896 transitions. Word has length 129 [2021-11-05 16:09:26,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:26,009 INFO L470 AbstractCegarLoop]: Abstraction has 12541 states and 17896 transitions. [2021-11-05 16:09:26,009 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) [2021-11-05 16:09:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 12541 states and 17896 transitions. [2021-11-05 16:09:26,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-05 16:09:26,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:26,013 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] [2021-11-05 16:09:26,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:09:26,013 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)] === [2021-11-05 16:09:26,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:26,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1784961778, now seen corresponding path program 1 times [2021-11-05 16:09:26,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:26,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023808504] [2021-11-05 16:09:26,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:26,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 16:09:26,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:26,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023808504] [2021-11-05 16:09:26,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023808504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:26,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:26,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:09:26,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452407093] [2021-11-05 16:09:26,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:26,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:09:26,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:26,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:09:26,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:26,238 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) [2021-11-05 16:09:26,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:26,457 INFO L93 Difference]: Finished difference Result 12541 states and 17896 transitions. [2021-11-05 16:09:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:09:26,457 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 [2021-11-05 16:09:26,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:26,485 INFO L225 Difference]: With dead ends: 12541 [2021-11-05 16:09:26,486 INFO L226 Difference]: Without dead ends: 12533 [2021-11-05 16:09:26,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:09:26,490 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, 4.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:26,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4510 Valid, 4633 Invalid, 0 Unknown, 0 Unchecked, 4.75ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 16:09:26,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12533 states. [2021-11-05 16:09:26,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12533 to 12533. [2021-11-05 16:09:26,723 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) [2021-11-05 16:09:26,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12533 states to 12533 states and 17887 transitions. [2021-11-05 16:09:26,749 INFO L78 Accepts]: Start accepts. Automaton has 12533 states and 17887 transitions. Word has length 130 [2021-11-05 16:09:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:26,749 INFO L470 AbstractCegarLoop]: Abstraction has 12533 states and 17887 transitions. [2021-11-05 16:09:26,749 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) [2021-11-05 16:09:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 12533 states and 17887 transitions. [2021-11-05 16:09:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-05 16:09:26,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:26,778 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] [2021-11-05 16:09:26,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:09:26,779 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)] === [2021-11-05 16:09:26,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:26,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1503885213, now seen corresponding path program 1 times [2021-11-05 16:09:26,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:26,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475789821] [2021-11-05 16:09:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:26,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-05 16:09:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:27,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-05 16:09:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:09:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 16:09:27,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:27,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475789821] [2021-11-05 16:09:27,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475789821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:27,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:27,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:09:27,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208960699] [2021-11-05 16:09:27,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:27,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:09:27,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:27,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:09:27,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:09:27,121 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) [2021-11-05 16:09:29,154 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 [] [2021-11-05 16:09:31,023 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:09:35,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:35,951 INFO L93 Difference]: Finished difference Result 25515 states and 37067 transitions. [2021-11-05 16:09:35,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:09:35,952 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 [2021-11-05 16:09:35,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:35,992 INFO L225 Difference]: With dead ends: 25515 [2021-11-05 16:09:35,992 INFO L226 Difference]: Without dead ends: 13189 [2021-11-05 16:09:36,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.42ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:09:36,034 INFO L933 BasicCegarLoop]: 4169 mSDtfsCounter, 4733 mSDsluCounter, 7049 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 320 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7514.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4760 SdHoareTripleChecker+Valid, 11218 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.85ms SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8262.57ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:36,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4760 Valid, 11218 Invalid, 2268 Unknown, 0 Unchecked, 30.85ms Time], IncrementalHoareTripleChecker [320 Valid, 1947 Invalid, 1 Unknown, 0 Unchecked, 8262.57ms Time] [2021-11-05 16:09:36,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13189 states. [2021-11-05 16:09:36,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13189 to 13125. [2021-11-05 16:09:36,329 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) [2021-11-05 16:09:36,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13125 states to 13125 states and 18069 transitions. [2021-11-05 16:09:36,371 INFO L78 Accepts]: Start accepts. Automaton has 13125 states and 18069 transitions. Word has length 219 [2021-11-05 16:09:36,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:36,371 INFO L470 AbstractCegarLoop]: Abstraction has 13125 states and 18069 transitions. [2021-11-05 16:09:36,372 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) [2021-11-05 16:09:36,372 INFO L276 IsEmpty]: Start isEmpty. Operand 13125 states and 18069 transitions. [2021-11-05 16:09:36,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-05 16:09:36,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:36,401 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] [2021-11-05 16:09:36,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 16:09:36,401 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)] === [2021-11-05 16:09:36,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:36,402 INFO L85 PathProgramCache]: Analyzing trace with hash 766242725, now seen corresponding path program 1 times [2021-11-05 16:09:36,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:36,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459735187] [2021-11-05 16:09:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:36,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:36,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-05 16:09:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:36,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-05 16:09:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:36,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:09:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 16:09:36,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:36,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459735187] [2021-11-05 16:09:36,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459735187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:36,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:36,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:09:36,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967935220] [2021-11-05 16:09:36,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:36,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:09:36,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:36,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:09:36,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:09:36,664 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) [2021-11-05 16:09:38,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:09:42,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:42,735 INFO L93 Difference]: Finished difference Result 26211 states and 36849 transitions. [2021-11-05 16:09:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:09:42,736 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 [2021-11-05 16:09:42,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:42,778 INFO L225 Difference]: With dead ends: 26211 [2021-11-05 16:09:42,778 INFO L226 Difference]: Without dead ends: 13293 [2021-11-05 16:09:42,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.26ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:09:42,821 INFO L933 BasicCegarLoop]: 4348 mSDtfsCounter, 316 mSDsluCounter, 7508 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5086.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 11856 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.85ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5608.65ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:42,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 11856 Invalid, 1404 Unknown, 0 Unchecked, 19.85ms Time], IncrementalHoareTripleChecker [88 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 5608.65ms Time] [2021-11-05 16:09:42,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13293 states. [2021-11-05 16:09:43,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13293 to 13129. [2021-11-05 16:09:43,175 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) [2021-11-05 16:09:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13129 states to 13129 states and 18073 transitions. [2021-11-05 16:09:43,226 INFO L78 Accepts]: Start accepts. Automaton has 13129 states and 18073 transitions. Word has length 219 [2021-11-05 16:09:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:43,227 INFO L470 AbstractCegarLoop]: Abstraction has 13129 states and 18073 transitions. [2021-11-05 16:09:43,227 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) [2021-11-05 16:09:43,227 INFO L276 IsEmpty]: Start isEmpty. Operand 13129 states and 18073 transitions. [2021-11-05 16:09:43,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-05 16:09:43,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:43,252 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] [2021-11-05 16:09:43,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 16:09:43,253 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)] === [2021-11-05 16:09:43,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash 231382310, now seen corresponding path program 1 times [2021-11-05 16:09:43,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:43,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800768028] [2021-11-05 16:09:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:43,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-05 16:09:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:43,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-05 16:09:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:43,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:09:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 16:09:43,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:43,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800768028] [2021-11-05 16:09:43,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800768028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:43,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:43,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:09:43,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745610658] [2021-11-05 16:09:43,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:43,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:09:43,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:43,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:09:43,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:09:43,587 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) [2021-11-05 16:09:45,618 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 [] [2021-11-05 16:09:50,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:09:50,627 INFO L93 Difference]: Finished difference Result 26295 states and 36887 transitions. [2021-11-05 16:09:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 16:09:50,628 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 [2021-11-05 16:09:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:09:50,836 INFO L225 Difference]: With dead ends: 26295 [2021-11-05 16:09:50,836 INFO L226 Difference]: Without dead ends: 13373 [2021-11-05 16:09:50,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.34ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:09:50,863 INFO L933 BasicCegarLoop]: 4357 mSDtfsCounter, 369 mSDsluCounter, 11897 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 98 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5970.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 16254 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.85ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6531.99ms IncrementalHoareTripleChecker+Time [2021-11-05 16:09:50,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 16254 Invalid, 1504 Unknown, 0 Unchecked, 24.85ms Time], IncrementalHoareTripleChecker [98 Valid, 1405 Invalid, 1 Unknown, 0 Unchecked, 6531.99ms Time] [2021-11-05 16:09:50,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13373 states. [2021-11-05 16:09:51,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13373 to 13129. [2021-11-05 16:09:51,141 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) [2021-11-05 16:09:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13129 states to 13129 states and 18069 transitions. [2021-11-05 16:09:51,168 INFO L78 Accepts]: Start accepts. Automaton has 13129 states and 18069 transitions. Word has length 221 [2021-11-05 16:09:51,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:09:51,168 INFO L470 AbstractCegarLoop]: Abstraction has 13129 states and 18069 transitions. [2021-11-05 16:09:51,169 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) [2021-11-05 16:09:51,169 INFO L276 IsEmpty]: Start isEmpty. Operand 13129 states and 18069 transitions. [2021-11-05 16:09:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-05 16:09:51,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:09:51,201 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] [2021-11-05 16:09:51,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 16:09:51,202 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)] === [2021-11-05 16:09:51,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:09:51,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1817372770, now seen corresponding path program 1 times [2021-11-05 16:09:51,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:09:51,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297597078] [2021-11-05 16:09:51,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:09:51,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:09:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:51,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-05 16:09:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:51,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-05 16:09:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:51,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:09:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:09:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 16:09:51,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:09:51,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297597078] [2021-11-05 16:09:51,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297597078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:09:51,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:09:51,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 16:09:51,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257367168] [2021-11-05 16:09:51,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:09:51,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 16:09:51,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:09:51,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 16:09:51,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-05 16:09:51,803 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) [2021-11-05 16:09:53,835 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 [] [2021-11-05 16:09:55,997 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:09:58,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:10:37,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 16:10:40,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 16:10:44,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:10:44,027 INFO L93 Difference]: Finished difference Result 69477 states and 95981 transitions. [2021-11-05 16:10:44,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-05 16:10:44,028 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 [2021-11-05 16:10:44,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:10:44,193 INFO L225 Difference]: With dead ends: 69477 [2021-11-05 16:10:44,193 INFO L226 Difference]: Without dead ends: 56555 [2021-11-05 16:10:44,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 442.39ms TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2021-11-05 16:10:44,255 INFO L933 BasicCegarLoop]: 7703 mSDtfsCounter, 27313 mSDsluCounter, 64459 mSDsCounter, 0 mSdLazyCounter, 16214 mSolverCounterSat, 1881 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46186.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27394 SdHoareTripleChecker+Valid, 72162 SdHoareTripleChecker+Invalid, 18097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 148.89ms SdHoareTripleChecker+Time, 1881 IncrementalHoareTripleChecker+Valid, 16214 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49963.76ms IncrementalHoareTripleChecker+Time [2021-11-05 16:10:44,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27394 Valid, 72162 Invalid, 18097 Unknown, 0 Unchecked, 148.89ms Time], IncrementalHoareTripleChecker [1881 Valid, 16214 Invalid, 2 Unknown, 0 Unchecked, 49963.76ms Time] [2021-11-05 16:10:44,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56555 states. [2021-11-05 16:10:45,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56555 to 14041. [2021-11-05 16:10:45,225 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) [2021-11-05 16:10:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14041 states to 14041 states and 19695 transitions. [2021-11-05 16:10:45,263 INFO L78 Accepts]: Start accepts. Automaton has 14041 states and 19695 transitions. Word has length 223 [2021-11-05 16:10:45,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:10:45,263 INFO L470 AbstractCegarLoop]: Abstraction has 14041 states and 19695 transitions. [2021-11-05 16:10:45,264 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) [2021-11-05 16:10:45,264 INFO L276 IsEmpty]: Start isEmpty. Operand 14041 states and 19695 transitions. [2021-11-05 16:10:45,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-05 16:10:45,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:10:45,286 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] [2021-11-05 16:10:45,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 16:10:45,286 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)] === [2021-11-05 16:10:45,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:10:45,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1092906886, now seen corresponding path program 1 times [2021-11-05 16:10:45,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:10:45,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255108903] [2021-11-05 16:10:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:10:45,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:10:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:10:45,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-05 16:10:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:10:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-05 16:10:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:10:45,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-05 16:10:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:10:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:10:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:10:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 16:10:45,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:10:45,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255108903] [2021-11-05 16:10:45,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255108903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:10:45,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:10:45,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:10:45,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361300899] [2021-11-05 16:10:45,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:10:45,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:10:45,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:10:45,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:10:45,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:10:45,560 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) [2021-11-05 16:10:47,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:10:53,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 16:10:54,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:10:54,451 INFO L93 Difference]: Finished difference Result 28452 states and 40029 transitions. [2021-11-05 16:10:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:10:54,460 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 [2021-11-05 16:10:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:10:54,507 INFO L225 Difference]: With dead ends: 28452 [2021-11-05 16:10:54,507 INFO L226 Difference]: Without dead ends: 14615 [2021-11-05 16:10:54,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.72ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:10:54,541 INFO L933 BasicCegarLoop]: 4356 mSDtfsCounter, 287 mSDsluCounter, 7470 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 87 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7636.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 11826 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.82ms SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8259.13ms IncrementalHoareTripleChecker+Time [2021-11-05 16:10:54,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 11826 Invalid, 1445 Unknown, 0 Unchecked, 19.82ms Time], IncrementalHoareTripleChecker [87 Valid, 1357 Invalid, 1 Unknown, 0 Unchecked, 8259.13ms Time] [2021-11-05 16:10:54,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14615 states. [2021-11-05 16:10:54,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14615 to 14043. [2021-11-05 16:10:55,006 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) [2021-11-05 16:10:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14043 states to 14043 states and 19697 transitions. [2021-11-05 16:10:55,036 INFO L78 Accepts]: Start accepts. Automaton has 14043 states and 19697 transitions. Word has length 234 [2021-11-05 16:10:55,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:10:55,037 INFO L470 AbstractCegarLoop]: Abstraction has 14043 states and 19697 transitions. [2021-11-05 16:10:55,037 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) [2021-11-05 16:10:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 14043 states and 19697 transitions. [2021-11-05 16:10:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-05 16:10:55,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:10:55,085 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] [2021-11-05 16:10:55,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 16:10:55,086 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)] === [2021-11-05 16:10:55,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:10:55,086 INFO L85 PathProgramCache]: Analyzing trace with hash -112933994, now seen corresponding path program 1 times [2021-11-05 16:10:55,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:10:55,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207746355] [2021-11-05 16:10:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:10:55,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:10:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:10:55,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-05 16:10:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:10:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-05 16:10:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:10:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-05 16:10:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:10:55,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:10:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:10:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-05 16:10:55,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:10:55,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207746355] [2021-11-05 16:10:55,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207746355] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:10:55,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276805260] [2021-11-05 16:10:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:10:55,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:10:55,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:10:55,402 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) [2021-11-05 16:10:55,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 16:11:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:05,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 3837 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-05 16:11:05,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:11:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-05 16:11:06,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:11:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-05 16:11:06,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276805260] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:11:06,802 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:11:06,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2021-11-05 16:11:06,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132832958] [2021-11-05 16:11:06,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:11:06,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 16:11:06,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:11:06,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 16:11:06,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:11:06,804 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) [2021-11-05 16:11:08,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:11:16,545 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 16:11:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:11:17,697 INFO L93 Difference]: Finished difference Result 28595 states and 40312 transitions. [2021-11-05 16:11:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 16:11:17,698 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 [2021-11-05 16:11:17,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:11:17,752 INFO L225 Difference]: With dead ends: 28595 [2021-11-05 16:11:17,753 INFO L226 Difference]: Without dead ends: 14757 [2021-11-05 16:11:17,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 90.45ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:11:17,786 INFO L933 BasicCegarLoop]: 4331 mSDtfsCounter, 3634 mSDsluCounter, 15954 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 202 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9392.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3678 SdHoareTripleChecker+Valid, 20285 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.20ms SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10201.88ms IncrementalHoareTripleChecker+Time [2021-11-05 16:11:17,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3678 Valid, 20285 Invalid, 1963 Unknown, 0 Unchecked, 32.20ms Time], IncrementalHoareTripleChecker [202 Valid, 1760 Invalid, 1 Unknown, 0 Unchecked, 10201.88ms Time] [2021-11-05 16:11:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14757 states. [2021-11-05 16:11:18,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14757 to 14185. [2021-11-05 16:11:18,500 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) [2021-11-05 16:11:18,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14185 states to 14185 states and 19839 transitions. [2021-11-05 16:11:18,527 INFO L78 Accepts]: Start accepts. Automaton has 14185 states and 19839 transitions. Word has length 236 [2021-11-05 16:11:18,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:11:18,527 INFO L470 AbstractCegarLoop]: Abstraction has 14185 states and 19839 transitions. [2021-11-05 16:11:18,527 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) [2021-11-05 16:11:18,528 INFO L276 IsEmpty]: Start isEmpty. Operand 14185 states and 19839 transitions. [2021-11-05 16:11:18,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-05 16:11:18,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:11:18,548 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] [2021-11-05 16:11:18,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 16:11:18,775 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 [2021-11-05 16:11:18,776 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)] === [2021-11-05 16:11:18,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:11:18,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1916066660, now seen corresponding path program 1 times [2021-11-05 16:11:18,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:11:18,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574530887] [2021-11-05 16:11:18,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:11:18,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:11:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:19,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-05 16:11:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:19,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-05 16:11:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:19,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:11:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-05 16:11:19,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:11:19,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574530887] [2021-11-05 16:11:19,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574530887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:11:19,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:11:19,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 16:11:19,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154414379] [2021-11-05 16:11:19,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:11:19,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 16:11:19,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:11:19,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 16:11:19,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-05 16:11:19,312 INFO L87 Difference]: Start difference. First operand 14185 states and 19839 transitions. Second operand has 10 states, 10 states have (on average 21.6) internal successors, (216), 9 states have internal predecessors, (216), 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) [2021-11-05 16:11:21,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:11:23,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:11:38,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:11:38,939 INFO L93 Difference]: Finished difference Result 36246 states and 52722 transitions. [2021-11-05 16:11:38,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-05 16:11:38,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 9 states have internal predecessors, (216), 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 231 [2021-11-05 16:11:38,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:11:39,017 INFO L225 Difference]: With dead ends: 36246 [2021-11-05 16:11:39,018 INFO L226 Difference]: Without dead ends: 22276 [2021-11-05 16:11:39,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 830.39ms TimeCoverageRelationStatistics Valid=280, Invalid=980, Unknown=0, NotChecked=0, Total=1260 [2021-11-05 16:11:39,071 INFO L933 BasicCegarLoop]: 8552 mSDtfsCounter, 4920 mSDsluCounter, 61598 mSDsCounter, 0 mSdLazyCounter, 4199 mSolverCounterSat, 254 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15920.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4920 SdHoareTripleChecker+Valid, 70150 SdHoareTripleChecker+Invalid, 4455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 86.18ms SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 4199 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17645.03ms IncrementalHoareTripleChecker+Time [2021-11-05 16:11:39,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4920 Valid, 70150 Invalid, 4455 Unknown, 0 Unchecked, 86.18ms Time], IncrementalHoareTripleChecker [254 Valid, 4199 Invalid, 2 Unknown, 0 Unchecked, 17645.03ms Time] [2021-11-05 16:11:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22276 states. [2021-11-05 16:11:39,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22276 to 21174. [2021-11-05 16:11:39,889 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) [2021-11-05 16:11:39,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21174 states to 21174 states and 30159 transitions. [2021-11-05 16:11:39,944 INFO L78 Accepts]: Start accepts. Automaton has 21174 states and 30159 transitions. Word has length 231 [2021-11-05 16:11:39,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:11:39,945 INFO L470 AbstractCegarLoop]: Abstraction has 21174 states and 30159 transitions. [2021-11-05 16:11:39,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 9 states have internal predecessors, (216), 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) [2021-11-05 16:11:39,946 INFO L276 IsEmpty]: Start isEmpty. Operand 21174 states and 30159 transitions. [2021-11-05 16:11:39,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-05 16:11:39,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:11:39,972 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] [2021-11-05 16:11:39,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 16:11:39,972 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)] === [2021-11-05 16:11:39,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:11:39,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1218517416, now seen corresponding path program 1 times [2021-11-05 16:11:39,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:11:39,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321085754] [2021-11-05 16:11:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:11:39,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:11:40,048 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:11:40,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085749918] [2021-11-05 16:11:40,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:11:40,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:11:40,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:11:40,050 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) [2021-11-05 16:11:40,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 16:11:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:41,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 4053 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:11:41,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:11:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-05 16:11:41,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:11:41,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:11:41,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321085754] [2021-11-05 16:11:41,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:11:41,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085749918] [2021-11-05 16:11:41,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085749918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:11:41,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:11:41,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:11:41,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827989980] [2021-11-05 16:11:41,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:11:41,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:11:41,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:11:41,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:11:41,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:11:41,493 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) [2021-11-05 16:11:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:11:42,980 INFO L93 Difference]: Finished difference Result 55436 states and 78045 transitions. [2021-11-05 16:11:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:11:42,981 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 [2021-11-05 16:11:42,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:11:43,073 INFO L225 Difference]: With dead ends: 55436 [2021-11-05 16:11:43,073 INFO L226 Difference]: Without dead ends: 34477 [2021-11-05 16:11:43,131 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 [2021-11-05 16:11:43,132 INFO L933 BasicCegarLoop]: 7007 mSDtfsCounter, 2897 mSDsluCounter, 4375 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2910 SdHoareTripleChecker+Valid, 11382 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.23ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.55ms IncrementalHoareTripleChecker+Time [2021-11-05 16:11:43,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2910 Valid, 11382 Invalid, 88 Unknown, 0 Unchecked, 8.23ms Time], IncrementalHoareTripleChecker [34 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 135.55ms Time] [2021-11-05 16:11:43,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34477 states. [2021-11-05 16:11:44,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34477 to 22740. [2021-11-05 16:11:44,219 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) [2021-11-05 16:11:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22740 states to 22740 states and 32211 transitions. [2021-11-05 16:11:44,268 INFO L78 Accepts]: Start accepts. Automaton has 22740 states and 32211 transitions. Word has length 256 [2021-11-05 16:11:44,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:11:44,269 INFO L470 AbstractCegarLoop]: Abstraction has 22740 states and 32211 transitions. [2021-11-05 16:11:44,269 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) [2021-11-05 16:11:44,269 INFO L276 IsEmpty]: Start isEmpty. Operand 22740 states and 32211 transitions. [2021-11-05 16:11:44,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-05 16:11:44,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:11:44,293 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] [2021-11-05 16:11:44,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 16:11:44,507 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 [2021-11-05 16:11:44,508 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)] === [2021-11-05 16:11:44,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:11:44,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2066685334, now seen corresponding path program 1 times [2021-11-05 16:11:44,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:11:44,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285611136] [2021-11-05 16:11:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:11:44,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:11:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:44,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-05 16:11:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:44,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-05 16:11:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:44,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-05 16:11:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:44,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:11:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-05 16:11:44,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:11:44,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285611136] [2021-11-05 16:11:44,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285611136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:11:44,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:11:44,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:11:44,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368929411] [2021-11-05 16:11:44,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:11:44,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:11:44,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:11:44,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:11:44,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:11:44,806 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) [2021-11-05 16:11:46,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:11:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:11:53,595 INFO L93 Difference]: Finished difference Result 46189 states and 67723 transitions. [2021-11-05 16:11:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:11:53,595 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 [2021-11-05 16:11:53,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:11:53,711 INFO L225 Difference]: With dead ends: 46189 [2021-11-05 16:11:53,712 INFO L226 Difference]: Without dead ends: 23664 [2021-11-05 16:11:53,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.75ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:11:53,820 INFO L933 BasicCegarLoop]: 4353 mSDtfsCounter, 287 mSDsluCounter, 7519 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 86 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6883.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 11872 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.20ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7628.09ms IncrementalHoareTripleChecker+Time [2021-11-05 16:11:53,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 11872 Invalid, 1390 Unknown, 0 Unchecked, 19.20ms Time], IncrementalHoareTripleChecker [86 Valid, 1303 Invalid, 1 Unknown, 0 Unchecked, 7628.09ms Time] [2021-11-05 16:11:53,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23664 states. [2021-11-05 16:11:54,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23664 to 22746. [2021-11-05 16:11:54,916 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) [2021-11-05 16:11:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22746 states to 22746 states and 32217 transitions. [2021-11-05 16:11:54,968 INFO L78 Accepts]: Start accepts. Automaton has 22746 states and 32217 transitions. Word has length 259 [2021-11-05 16:11:54,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:11:54,968 INFO L470 AbstractCegarLoop]: Abstraction has 22746 states and 32217 transitions. [2021-11-05 16:11:54,969 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) [2021-11-05 16:11:54,969 INFO L276 IsEmpty]: Start isEmpty. Operand 22746 states and 32217 transitions. [2021-11-05 16:11:54,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-05 16:11:54,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:11:55,001 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] [2021-11-05 16:11:55,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 16:11:55,001 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)] === [2021-11-05 16:11:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:11:55,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1233588264, now seen corresponding path program 1 times [2021-11-05 16:11:55,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:11:55,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574643607] [2021-11-05 16:11:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:11:55,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:11:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:55,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-05 16:11:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:55,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-05 16:11:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:55,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-05 16:11:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:11:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:11:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-05 16:11:55,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:11:55,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574643607] [2021-11-05 16:11:55,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574643607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:11:55,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:11:55,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:11:55,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147784886] [2021-11-05 16:11:55,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:11:55,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:11:55,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:11:55,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:11:55,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:11:55,379 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) [2021-11-05 16:11:57,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:12:04,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:12:04,432 INFO L93 Difference]: Finished difference Result 47065 states and 69019 transitions. [2021-11-05 16:12:04,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:12:04,432 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 [2021-11-05 16:12:04,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:12:04,634 INFO L225 Difference]: With dead ends: 47065 [2021-11-05 16:12:04,635 INFO L226 Difference]: Without dead ends: 24534 [2021-11-05 16:12:04,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.89ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:12:04,710 INFO L933 BasicCegarLoop]: 4451 mSDtfsCounter, 483 mSDsluCounter, 12036 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 88 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7281.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 16487 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.27ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8032.45ms IncrementalHoareTripleChecker+Time [2021-11-05 16:12:04,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 16487 Invalid, 1542 Unknown, 0 Unchecked, 23.27ms Time], IncrementalHoareTripleChecker [88 Valid, 1453 Invalid, 1 Unknown, 0 Unchecked, 8032.45ms Time] [2021-11-05 16:12:04,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24534 states. [2021-11-05 16:12:05,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24534 to 22758. [2021-11-05 16:12:05,600 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) [2021-11-05 16:12:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22758 states to 22758 states and 32229 transitions. [2021-11-05 16:12:05,656 INFO L78 Accepts]: Start accepts. Automaton has 22758 states and 32229 transitions. Word has length 259 [2021-11-05 16:12:05,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:12:05,657 INFO L470 AbstractCegarLoop]: Abstraction has 22758 states and 32229 transitions. [2021-11-05 16:12:05,657 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) [2021-11-05 16:12:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 22758 states and 32229 transitions. [2021-11-05 16:12:05,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-05 16:12:05,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:12:05,783 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] [2021-11-05 16:12:05,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 16:12:05,785 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)] === [2021-11-05 16:12:05,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:12:05,789 INFO L85 PathProgramCache]: Analyzing trace with hash 435435087, now seen corresponding path program 1 times [2021-11-05 16:12:05,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:12:05,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870186526] [2021-11-05 16:12:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:12:05,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:12:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:06,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-05 16:12:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:06,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-05 16:12:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:06,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:12:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-05 16:12:06,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:12:06,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870186526] [2021-11-05 16:12:06,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870186526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:12:06,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:12:06,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 16:12:06,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793345103] [2021-11-05 16:12:06,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:12:06,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 16:12:06,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:12:06,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 16:12:06,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-05 16:12:06,905 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) [2021-11-05 16:12:08,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:12:11,152 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:12:13,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:12:15,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:12:17,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:12:24,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 16:12:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:12:33,058 INFO L93 Difference]: Finished difference Result 54164 states and 79988 transitions. [2021-11-05 16:12:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-05 16:12:33,059 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 [2021-11-05 16:12:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:12:33,170 INFO L225 Difference]: With dead ends: 54164 [2021-11-05 16:12:33,170 INFO L226 Difference]: Without dead ends: 31595 [2021-11-05 16:12:33,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 1838.12ms TimeCoverageRelationStatistics Valid=639, Invalid=2331, Unknown=0, NotChecked=0, Total=2970 [2021-11-05 16:12:33,272 INFO L933 BasicCegarLoop]: 4624 mSDtfsCounter, 14610 mSDsluCounter, 42101 mSDsCounter, 0 mSdLazyCounter, 4751 mSolverCounterSat, 799 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20329.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14610 SdHoareTripleChecker+Valid, 46725 SdHoareTripleChecker+Invalid, 5555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.13ms SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 4751 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22520.06ms IncrementalHoareTripleChecker+Time [2021-11-05 16:12:33,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14610 Valid, 46725 Invalid, 5555 Unknown, 0 Unchecked, 79.13ms Time], IncrementalHoareTripleChecker [799 Valid, 4751 Invalid, 5 Unknown, 0 Unchecked, 22520.06ms Time] [2021-11-05 16:12:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31595 states. [2021-11-05 16:12:34,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31595 to 30181. [2021-11-05 16:12:34,906 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) [2021-11-05 16:12:34,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30181 states to 30181 states and 43368 transitions. [2021-11-05 16:12:34,992 INFO L78 Accepts]: Start accepts. Automaton has 30181 states and 43368 transitions. Word has length 237 [2021-11-05 16:12:34,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:12:34,993 INFO L470 AbstractCegarLoop]: Abstraction has 30181 states and 43368 transitions. [2021-11-05 16:12:34,993 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) [2021-11-05 16:12:34,993 INFO L276 IsEmpty]: Start isEmpty. Operand 30181 states and 43368 transitions. [2021-11-05 16:12:35,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-05 16:12:35,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:12:35,034 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] [2021-11-05 16:12:35,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 16:12:35,034 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)] === [2021-11-05 16:12:35,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:12:35,035 INFO L85 PathProgramCache]: Analyzing trace with hash -627349177, now seen corresponding path program 1 times [2021-11-05 16:12:35,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:12:35,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29032241] [2021-11-05 16:12:35,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:12:35,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:12:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:35,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-05 16:12:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:35,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-05 16:12:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:35,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-05 16:12:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:12:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:35,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-05 16:12:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:35,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-05 16:12:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-05 16:12:35,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:12:35,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29032241] [2021-11-05 16:12:35,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29032241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:12:35,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:12:35,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 16:12:35,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385832512] [2021-11-05 16:12:35,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:12:35,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 16:12:35,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:12:35,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 16:12:35,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-05 16:12:35,565 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) [2021-11-05 16:12:37,602 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:12:46,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:12:46,614 INFO L93 Difference]: Finished difference Result 61397 states and 91243 transitions. [2021-11-05 16:12:46,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 16:12:46,614 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 [2021-11-05 16:12:46,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:12:46,747 INFO L225 Difference]: With dead ends: 61397 [2021-11-05 16:12:46,748 INFO L226 Difference]: Without dead ends: 31431 [2021-11-05 16:12:46,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 211.04ms TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-05 16:12:46,888 INFO L933 BasicCegarLoop]: 4358 mSDtfsCounter, 356 mSDsluCounter, 29268 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 97 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8316.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 33626 SdHoareTripleChecker+Invalid, 1919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.70ms SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9138.82ms IncrementalHoareTripleChecker+Time [2021-11-05 16:12:46,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 33626 Invalid, 1919 Unknown, 0 Unchecked, 32.70ms Time], IncrementalHoareTripleChecker [97 Valid, 1821 Invalid, 1 Unknown, 0 Unchecked, 9138.82ms Time] [2021-11-05 16:12:46,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31431 states. [2021-11-05 16:12:48,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31431 to 30213. [2021-11-05 16:12:48,444 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) [2021-11-05 16:12:48,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30213 states to 30213 states and 43416 transitions. [2021-11-05 16:12:48,517 INFO L78 Accepts]: Start accepts. Automaton has 30213 states and 43416 transitions. Word has length 279 [2021-11-05 16:12:48,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:12:48,518 INFO L470 AbstractCegarLoop]: Abstraction has 30213 states and 43416 transitions. [2021-11-05 16:12:48,518 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) [2021-11-05 16:12:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 30213 states and 43416 transitions. [2021-11-05 16:12:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-05 16:12:48,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:12:48,552 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] [2021-11-05 16:12:48,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 16:12:48,553 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)] === [2021-11-05 16:12:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:12:48,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1272187478, now seen corresponding path program 1 times [2021-11-05 16:12:48,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:12:48,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132524620] [2021-11-05 16:12:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:12:48,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:12:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:48,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-05 16:12:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:48,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-05 16:12:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:48,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-05 16:12:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:12:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-05 16:12:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-05 16:12:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:12:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-05 16:12:48,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:12:48,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132524620] [2021-11-05 16:12:48,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132524620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:12:48,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:12:48,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 16:12:48,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726832540] [2021-11-05 16:12:48,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:12:48,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 16:12:48,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:12:48,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 16:12:48,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:12:48,988 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) [2021-11-05 16:12:51,025 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:12:58,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:12:58,014 INFO L93 Difference]: Finished difference Result 61429 states and 91251 transitions. [2021-11-05 16:12:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 16:12:58,015 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 [2021-11-05 16:12:58,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:12:58,158 INFO L225 Difference]: With dead ends: 61429 [2021-11-05 16:12:58,158 INFO L226 Difference]: Without dead ends: 31431 [2021-11-05 16:12:58,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.55ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-05 16:12:58,313 INFO L933 BasicCegarLoop]: 4363 mSDtfsCounter, 346 mSDsluCounter, 16215 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 88 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6429.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 20578 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.69ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7255.77ms IncrementalHoareTripleChecker+Time [2021-11-05 16:12:58,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 20578 Invalid, 1582 Unknown, 0 Unchecked, 40.69ms Time], IncrementalHoareTripleChecker [88 Valid, 1493 Invalid, 1 Unknown, 0 Unchecked, 7255.77ms Time] [2021-11-05 16:12:58,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31431 states. [2021-11-05 16:12:59,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31431 to 30225. [2021-11-05 16:12:59,852 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) [2021-11-05 16:12:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30225 states to 30225 states and 43426 transitions. [2021-11-05 16:12:59,936 INFO L78 Accepts]: Start accepts. Automaton has 30225 states and 43426 transitions. Word has length 280 [2021-11-05 16:12:59,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:12:59,937 INFO L470 AbstractCegarLoop]: Abstraction has 30225 states and 43426 transitions. [2021-11-05 16:12:59,937 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) [2021-11-05 16:12:59,937 INFO L276 IsEmpty]: Start isEmpty. Operand 30225 states and 43426 transitions. [2021-11-05 16:12:59,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-05 16:12:59,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:12:59,978 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] [2021-11-05 16:12:59,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 16:12:59,978 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)] === [2021-11-05 16:12:59,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:12:59,979 INFO L85 PathProgramCache]: Analyzing trace with hash 841968210, now seen corresponding path program 1 times [2021-11-05 16:12:59,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:12:59,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934785545] [2021-11-05 16:12:59,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:12:59,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:00,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-05 16:13:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-05 16:13:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:00,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-05 16:13:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:01,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:13:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:01,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-05 16:13:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:01,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-05 16:13:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-05 16:13:01,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:01,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934785545] [2021-11-05 16:13:01,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934785545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:01,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:13:01,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 16:13:01,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003160861] [2021-11-05 16:13:01,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:01,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 16:13:01,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:01,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 16:13:01,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-05 16:13:01,487 INFO L87 Difference]: Start difference. First operand 30225 states and 43426 transitions. Second operand has 14 states, 13 states have (on average 20.076923076923077) internal successors, (261), 13 states have internal predecessors, (261), 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) [2021-11-05 16:13:03,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:13:05,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:13:08,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:13:10,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:13:12,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:13:23,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 16:13:33,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 16:13:35,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:35,857 INFO L93 Difference]: Finished difference Result 69282 states and 103601 transitions. [2021-11-05 16:13:35,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-05 16:13:35,858 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 20.076923076923077) internal successors, (261), 13 states have internal predecessors, (261), 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 282 [2021-11-05 16:13:35,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:36,038 INFO L225 Difference]: With dead ends: 69282 [2021-11-05 16:13:36,038 INFO L226 Difference]: Without dead ends: 39266 [2021-11-05 16:13:36,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 1569.89ms TimeCoverageRelationStatistics Valid=332, Invalid=1924, Unknown=0, NotChecked=0, Total=2256 [2021-11-05 16:13:36,213 INFO L933 BasicCegarLoop]: 8427 mSDtfsCounter, 4956 mSDsluCounter, 88739 mSDsCounter, 0 mSdLazyCounter, 6630 mSolverCounterSat, 279 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27449.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4956 SdHoareTripleChecker+Valid, 97166 SdHoareTripleChecker+Invalid, 6914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 125.56ms SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 6630 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30515.92ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:36,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4956 Valid, 97166 Invalid, 6914 Unknown, 0 Unchecked, 125.56ms Time], IncrementalHoareTripleChecker [279 Valid, 6630 Invalid, 5 Unknown, 0 Unchecked, 30515.92ms Time] [2021-11-05 16:13:36,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39266 states. [2021-11-05 16:13:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39266 to 37594. [2021-11-05 16:13:38,246 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) [2021-11-05 16:13:38,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37594 states to 37594 states and 54213 transitions. [2021-11-05 16:13:38,338 INFO L78 Accepts]: Start accepts. Automaton has 37594 states and 54213 transitions. Word has length 282 [2021-11-05 16:13:38,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:38,339 INFO L470 AbstractCegarLoop]: Abstraction has 37594 states and 54213 transitions. [2021-11-05 16:13:38,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 20.076923076923077) internal successors, (261), 13 states have internal predecessors, (261), 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) [2021-11-05 16:13:38,339 INFO L276 IsEmpty]: Start isEmpty. Operand 37594 states and 54213 transitions. [2021-11-05 16:13:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-05 16:13:38,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:38,386 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] [2021-11-05 16:13:38,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 16:13:38,386 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)] === [2021-11-05 16:13:38,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:38,386 INFO L85 PathProgramCache]: Analyzing trace with hash -10143716, now seen corresponding path program 1 times [2021-11-05 16:13:38,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:38,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907470783] [2021-11-05 16:13:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:38,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:38,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-05 16:13:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-05 16:13:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:38,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-05 16:13:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:13:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:38,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-05 16:13:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:38,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-05 16:13:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-05 16:13:38,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:38,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907470783] [2021-11-05 16:13:38,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907470783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:38,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:13:38,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 16:13:38,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629581106] [2021-11-05 16:13:38,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:38,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 16:13:38,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:38,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 16:13:38,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:13:38,887 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) [2021-11-05 16:13:40,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:13:43,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:14:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:19,513 INFO L93 Difference]: Finished difference Result 187694 states and 344133 transitions. [2021-11-05 16:14:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 16:14:19,514 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 [2021-11-05 16:14:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:21,574 INFO L225 Difference]: With dead ends: 187694 [2021-11-05 16:14:21,575 INFO L226 Difference]: Without dead ends: 150309 [2021-11-05 16:14:22,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 211.11ms TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-05 16:14:22,318 INFO L933 BasicCegarLoop]: 13683 mSDtfsCounter, 23246 mSDsluCounter, 64539 mSDsCounter, 0 mSdLazyCounter, 12442 mSolverCounterSat, 2696 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27998.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23499 SdHoareTripleChecker+Valid, 78222 SdHoareTripleChecker+Invalid, 15140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 152.03ms SdHoareTripleChecker+Time, 2696 IncrementalHoareTripleChecker+Valid, 12442 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31358.29ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:22,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23499 Valid, 78222 Invalid, 15140 Unknown, 0 Unchecked, 152.03ms Time], IncrementalHoareTripleChecker [2696 Valid, 12442 Invalid, 2 Unknown, 0 Unchecked, 31358.29ms Time] [2021-11-05 16:14:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150309 states. [2021-11-05 16:14:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150309 to 79335. [2021-11-05 16:14:29,108 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) [2021-11-05 16:14:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79335 states to 79335 states and 137539 transitions. [2021-11-05 16:14:29,751 INFO L78 Accepts]: Start accepts. Automaton has 79335 states and 137539 transitions. Word has length 284 [2021-11-05 16:14:29,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:29,752 INFO L470 AbstractCegarLoop]: Abstraction has 79335 states and 137539 transitions. [2021-11-05 16:14:29,752 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) [2021-11-05 16:14:29,752 INFO L276 IsEmpty]: Start isEmpty. Operand 79335 states and 137539 transitions. [2021-11-05 16:14:29,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-05 16:14:29,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:29,822 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] [2021-11-05 16:14:29,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 16:14:29,823 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)] === [2021-11-05 16:14:29,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:29,823 INFO L85 PathProgramCache]: Analyzing trace with hash 883342622, now seen corresponding path program 1 times [2021-11-05 16:14:29,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:29,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241033956] [2021-11-05 16:14:29,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:29,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:30,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-05 16:14:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:30,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-05 16:14:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:30,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-05 16:14:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:30,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-05 16:14:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:31,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-05 16:14:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:31,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-05 16:14:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-05 16:14:31,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:31,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241033956] [2021-11-05 16:14:31,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241033956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:31,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:31,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 16:14:31,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595974711] [2021-11-05 16:14:31,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:31,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 16:14:31,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:31,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 16:14:31,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-05 16:14:31,175 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) [2021-11-05 16:14:33,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:14:35,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:14:37,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:14:40,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:14:42,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:14:49,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 16:15:08,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:15:08,057 INFO L93 Difference]: Finished difference Result 154180 states and 299845 transitions. [2021-11-05 16:15:08,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-05 16:15:08,058 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 [2021-11-05 16:15:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:15:08,921 INFO L225 Difference]: With dead ends: 154180 [2021-11-05 16:15:08,921 INFO L226 Difference]: Without dead ends: 82413 [2021-11-05 16:15:09,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1198.23ms TimeCoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2021-11-05 16:15:09,900 INFO L933 BasicCegarLoop]: 8434 mSDtfsCounter, 4921 mSDsluCounter, 68299 mSDsCounter, 0 mSdLazyCounter, 5282 mSolverCounterSat, 260 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26139.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4921 SdHoareTripleChecker+Valid, 76733 SdHoareTripleChecker+Invalid, 5547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 95.09ms SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 5282 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29546.56ms IncrementalHoareTripleChecker+Time [2021-11-05 16:15:09,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4921 Valid, 76733 Invalid, 5547 Unknown, 0 Unchecked, 95.09ms Time], IncrementalHoareTripleChecker [260 Valid, 5282 Invalid, 5 Unknown, 0 Unchecked, 29546.56ms Time] [2021-11-05 16:15:09,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82413 states. [2021-11-05 16:15:14,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82413 to 79195. [2021-11-05 16:15:14,702 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) [2021-11-05 16:15:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79195 states to 79195 states and 136485 transitions. [2021-11-05 16:15:15,493 INFO L78 Accepts]: Start accepts. Automaton has 79195 states and 136485 transitions. Word has length 284 [2021-11-05 16:15:15,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:15:15,493 INFO L470 AbstractCegarLoop]: Abstraction has 79195 states and 136485 transitions. [2021-11-05 16:15:15,494 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) [2021-11-05 16:15:15,494 INFO L276 IsEmpty]: Start isEmpty. Operand 79195 states and 136485 transitions. [2021-11-05 16:15:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-05 16:15:15,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:15:15,580 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] [2021-11-05 16:15:15,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 16:15:15,580 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)] === [2021-11-05 16:15:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:15:15,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1155783433, now seen corresponding path program 1 times [2021-11-05 16:15:15,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:15:15,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328598711] [2021-11-05 16:15:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:15:15,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:15:15,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:15:15,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411579461] [2021-11-05 16:15:15,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:15:15,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:15:15,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:15:15,671 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) [2021-11-05 16:15:15,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 16:15:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:15:16,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 4534 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:15:16,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:15:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-05 16:15:17,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:15:17,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:15:17,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328598711] [2021-11-05 16:15:17,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:15:17,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411579461] [2021-11-05 16:15:17,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411579461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:15:17,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:15:17,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:15:17,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177072937] [2021-11-05 16:15:17,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:15:17,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:15:17,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:15:17,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:15:17,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:15:17,321 INFO L87 Difference]: Start difference. First operand 79195 states and 136485 transitions. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)