./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.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 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 05:51:50,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 05:51:50,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 05:51:50,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 05:51:50,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 05:51:50,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 05:51:50,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 05:51:50,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 05:51:50,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 05:51:50,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 05:51:50,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 05:51:50,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 05:51:50,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 05:51:50,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 05:51:50,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 05:51:50,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 05:51:50,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 05:51:50,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 05:51:50,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 05:51:50,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 05:51:50,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 05:51:50,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 05:51:50,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 05:51:50,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 05:51:50,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 05:51:50,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 05:51:50,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 05:51:50,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 05:51:50,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 05:51:50,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 05:51:50,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 05:51:50,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 05:51:50,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 05:51:50,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 05:51:50,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 05:51:50,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 05:51:50,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 05:51:50,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 05:51:50,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 05:51:50,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 05:51:50,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 05:51:50,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 05:51:50,849 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 05:51:50,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 05:51:50,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 05:51:50,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 05:51:50,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 05:51:50,851 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 05:51:50,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 05:51:50,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 05:51:50,852 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 05:51:50,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 05:51:50,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 05:51:50,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 05:51:50,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 05:51:50,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 05:51:50,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 05:51:50,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 05:51:50,854 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 05:51:50,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 05:51:50,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 05:51:50,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 05:51:50,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 05:51:50,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 05:51:50,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 05:51:50,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 05:51:50,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 05:51:50,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 05:51:50,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 05:51:50,856 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 05:51:50,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 05:51:50,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 05:51:50,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 05:51:50,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 [2021-12-18 05:51:51,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 05:51:51,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 05:51:51,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 05:51:51,110 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 05:51:51,110 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 05:51:51,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2021-12-18 05:51:51,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64318b03b/82b28f6e5c3c4aa0b863f09c478386f7/FLAG34f7f2744 [2021-12-18 05:51:52,043 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 05:51:52,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2021-12-18 05:51:52,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64318b03b/82b28f6e5c3c4aa0b863f09c478386f7/FLAG34f7f2744 [2021-12-18 05:51:52,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64318b03b/82b28f6e5c3c4aa0b863f09c478386f7 [2021-12-18 05:51:52,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 05:51:52,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 05:51:52,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 05:51:52,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 05:51:52,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 05:51:52,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:51:52" (1/1) ... [2021-12-18 05:51:52,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718e9e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:51:52, skipping insertion in model container [2021-12-18 05:51:52,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:51:52" (1/1) ... [2021-12-18 05:51:52,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 05:51:52,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 05:51:53,106 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2021-12-18 05:51:54,548 WARN L230 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2021-12-18 05:51:54,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 05:51:54,636 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 05:51:54,716 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2021-12-18 05:51:55,138 WARN L230 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2021-12-18 05:51:55,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 05:51:55,233 INFO L208 MainTranslator]: Completed translation [2021-12-18 05:51:55,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:51:55 WrapperNode [2021-12-18 05:51:55,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 05:51:55,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 05:51:55,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 05:51:55,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 05:51:55,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:51:55" (1/1) ... [2021-12-18 05:51:55,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:51:55" (1/1) ... [2021-12-18 05:51:55,492 INFO L137 Inliner]: procedures = 174, calls = 2584, calls flagged for inlining = 78, calls inlined = 71, statements flattened = 5590 [2021-12-18 05:51:55,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 05:51:55,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 05:51:55,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 05:51:55,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 05:51:55,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:51:55" (1/1) ... [2021-12-18 05:51:55,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:51:55" (1/1) ... [2021-12-18 05:51:55,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:51:55" (1/1) ... [2021-12-18 05:51:55,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:51:55" (1/1) ... [2021-12-18 05:51:55,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:51:55" (1/1) ... [2021-12-18 05:51:55,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:51:55" (1/1) ... [2021-12-18 05:51:55,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:51:55" (1/1) ... [2021-12-18 05:51:55,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 05:51:55,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 05:51:55,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 05:51:55,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 05:51:55,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:51:55" (1/1) ... [2021-12-18 05:51:55,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 05:51:55,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:51:55,810 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) [2021-12-18 05:51:55,833 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 [2021-12-18 05:51:55,851 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-18 05:51:55,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-18 05:51:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_free_device [2021-12-18 05:51:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-12-18 05:51:55,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-12-18 05:51:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_fini [2021-12-18 05:51:55,852 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_fini [2021-12-18 05:51:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-18 05:51:55,852 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-18 05:51:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 05:51:55,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 05:51:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 05:51:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 05:51:55,853 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 05:51:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_alloc_urbs [2021-12-18 05:51:55,854 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_alloc_urbs [2021-12-18 05:51:55,854 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2021-12-18 05:51:55,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2021-12-18 05:51:55,854 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-18 05:51:55,854 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-18 05:51:55,854 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_attach_xc3028 [2021-12-18 05:51:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_attach_xc3028 [2021-12-18 05:51:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_detach [2021-12-18 05:51:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_detach [2021-12-18 05:51:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_1 [2021-12-18 05:51:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_1 [2021-12-18 05:51:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-18 05:51:55,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-18 05:51:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 05:51:55,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 05:51:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_resume [2021-12-18 05:51:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_resume [2021-12-18 05:51:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-18 05:51:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-18 05:51:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_frontend [2021-12-18 05:51:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_frontend [2021-12-18 05:51:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_suspend [2021-12-18 05:51:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_suspend [2021-12-18 05:51:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg [2021-12-18 05:51:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg [2021-12-18 05:51:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 05:51:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 05:51:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop_1 [2021-12-18 05:51:55,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop_1 [2021-12-18 05:51:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 05:51:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 05:51:55,859 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 05:51:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 05:51:55,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 05:51:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 05:51:55,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 05:51:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_start_1 [2021-12-18 05:51:55,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_start_1 [2021-12-18 05:51:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-18 05:51:55,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-18 05:51:55,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 05:51:55,862 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 05:51:55,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 05:51:55,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 05:51:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 05:51:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 05:51:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-18 05:51:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-18 05:51:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 05:51:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register_frontend [2021-12-18 05:51:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register_frontend [2021-12-18 05:51:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 05:51:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_suspend [2021-12-18 05:51:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_suspend [2021-12-18 05:51:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure prevent_sleep [2021-12-18 05:51:55,865 INFO L138 BoogieDeclarations]: Found implementation of procedure prevent_sleep [2021-12-18 05:51:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 05:51:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 05:51:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_master_send [2021-12-18 05:51:55,865 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_master_send [2021-12-18 05:51:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-12-18 05:51:55,866 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-12-18 05:51:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_resume [2021-12-18 05:51:55,866 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_resume [2021-12-18 05:51:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2021-12-18 05:51:55,866 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2021-12-18 05:51:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 05:51:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-12-18 05:51:55,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-12-18 05:51:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-18 05:51:55,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-18 05:51:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-18 05:51:55,868 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-18 05:51:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure drxk_gate_ctrl [2021-12-18 05:51:55,868 INFO L138 BoogieDeclarations]: Found implementation of procedure drxk_gate_ctrl [2021-12-18 05:51:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-18 05:51:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_swfilter [2021-12-18 05:51:55,869 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_swfilter [2021-12-18 05:51:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_device [2021-12-18 05:51:55,869 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_device [2021-12-18 05:51:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_request_one [2021-12-18 05:51:55,870 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_request_one [2021-12-18 05:51:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-18 05:51:55,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-18 05:51:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 05:51:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure print_err_status [2021-12-18 05:51:55,871 INFO L138 BoogieDeclarations]: Found implementation of procedure print_err_status [2021-12-18 05:51:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 05:51:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_mode [2021-12-18 05:51:55,871 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_mode [2021-12-18 05:51:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2021-12-18 05:51:55,872 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2021-12-18 05:51:55,872 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-18 05:51:55,872 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-18 05:51:55,872 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 05:51:55,872 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 05:51:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-18 05:51:55,873 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-18 05:51:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 05:51:55,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 05:51:55,874 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2021-12-18 05:51:55,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2021-12-18 05:51:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-18 05:51:55,876 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-18 05:51:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_gpio_set [2021-12-18 05:51:55,876 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_gpio_set [2021-12-18 05:51:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 05:51:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 05:51:55,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 05:51:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-18 05:51:55,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-18 05:51:56,644 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 05:51:56,649 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 05:51:56,985 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 05:52:17,512 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 05:52:17,528 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 05:52:17,528 INFO L301 CfgBuilder]: Removed 24 assume(true) statements. [2021-12-18 05:52:17,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:52:17 BoogieIcfgContainer [2021-12-18 05:52:17,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 05:52:17,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 05:52:17,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 05:52:17,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 05:52:17,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 05:51:52" (1/3) ... [2021-12-18 05:52:17,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b558480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:52:17, skipping insertion in model container [2021-12-18 05:52:17,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:51:55" (2/3) ... [2021-12-18 05:52:17,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b558480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:52:17, skipping insertion in model container [2021-12-18 05:52:17,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:52:17" (3/3) ... [2021-12-18 05:52:17,538 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2021-12-18 05:52:17,542 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 05:52:17,542 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 05:52:17,586 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 05:52:17,592 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 [2021-12-18 05:52:17,592 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 05:52:17,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 1533 states, 1083 states have (on average 1.420129270544783) internal successors, (1538), 1135 states have internal predecessors, (1538), 393 states have call successors, (393), 56 states have call predecessors, (393), 55 states have return successors, (389), 388 states have call predecessors, (389), 389 states have call successors, (389) [2021-12-18 05:52:17,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-18 05:52:17,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:52:17,640 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] [2021-12-18 05:52:17,641 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:52:17,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:52:17,645 INFO L85 PathProgramCache]: Analyzing trace with hash -237364010, now seen corresponding path program 1 times [2021-12-18 05:52:17,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:52:17,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133877200] [2021-12-18 05:52:17,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:52:17,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:52:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:52:18,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:52:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:52:18,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:52:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:52:18,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:52:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:52:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 05:52:18,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:52:18,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133877200] [2021-12-18 05:52:18,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133877200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:52:18,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:52:18,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 05:52:18,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364155259] [2021-12-18 05:52:18,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:52:18,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 05:52:18,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:52:18,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 05:52:18,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 05:52:18,405 INFO L87 Difference]: Start difference. First operand has 1533 states, 1083 states have (on average 1.420129270544783) internal successors, (1538), 1135 states have internal predecessors, (1538), 393 states have call successors, (393), 56 states have call predecessors, (393), 55 states have return successors, (389), 388 states have call predecessors, (389), 389 states have call successors, (389) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 05:52:19,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:52:22,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:52:24,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:52:26,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:52:29,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:52:31,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:52:36,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:52:36,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:52:36,817 INFO L93 Difference]: Finished difference Result 3120 states and 4948 transitions. [2021-12-18 05:52:36,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 05:52:36,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-12-18 05:52:36,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:52:36,848 INFO L225 Difference]: With dead ends: 3120 [2021-12-18 05:52:36,848 INFO L226 Difference]: Without dead ends: 1581 [2021-12-18 05:52:36,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 05:52:36,862 INFO L933 BasicCegarLoop]: 2302 mSDtfsCounter, 535 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 855 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 3374 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2021-12-18 05:52:36,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 3374 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 708 Invalid, 6 Unknown, 0 Unchecked, 18.2s Time] [2021-12-18 05:52:36,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2021-12-18 05:52:37,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1522. [2021-12-18 05:52:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1078 states have (on average 1.3710575139146568) internal successors, (1478), 1124 states have internal predecessors, (1478), 389 states have call successors, (389), 55 states have call predecessors, (389), 54 states have return successors, (387), 386 states have call predecessors, (387), 387 states have call successors, (387) [2021-12-18 05:52:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2254 transitions. [2021-12-18 05:52:37,041 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2254 transitions. Word has length 31 [2021-12-18 05:52:37,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:52:37,041 INFO L470 AbstractCegarLoop]: Abstraction has 1522 states and 2254 transitions. [2021-12-18 05:52:37,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 05:52:37,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2254 transitions. [2021-12-18 05:52:37,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-18 05:52:37,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:52:37,044 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] [2021-12-18 05:52:37,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 05:52:37,045 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:52:37,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:52:37,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1055012460, now seen corresponding path program 1 times [2021-12-18 05:52:37,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:52:37,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865710314] [2021-12-18 05:52:37,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:52:37,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:52:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:52:37,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:52:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:52:37,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:52:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:52:37,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:52:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:52:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 05:52:37,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:52:37,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865710314] [2021-12-18 05:52:37,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865710314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:52:37,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:52:37,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 05:52:37,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692549285] [2021-12-18 05:52:37,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:52:37,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 05:52:37,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:52:37,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 05:52:37,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 05:52:37,309 INFO L87 Difference]: Start difference. First operand 1522 states and 2254 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 05:52:41,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:52:43,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:52:47,525 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:52:49,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:52:52,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:01,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:03,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:53:03,560 INFO L93 Difference]: Finished difference Result 4649 states and 7103 transitions. [2021-12-18 05:53:03,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 05:53:03,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-12-18 05:53:03,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:53:03,584 INFO L225 Difference]: With dead ends: 4649 [2021-12-18 05:53:03,584 INFO L226 Difference]: Without dead ends: 3132 [2021-12-18 05:53:03,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-18 05:53:03,595 INFO L933 BasicCegarLoop]: 2693 mSDtfsCounter, 2422 mSDsluCounter, 4090 mSDsCounter, 0 mSdLazyCounter, 2575 mSolverCounterSat, 938 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2839 SdHoareTripleChecker+Valid, 6783 SdHoareTripleChecker+Invalid, 3519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 2575 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2021-12-18 05:53:03,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2839 Valid, 6783 Invalid, 3519 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [938 Valid, 2575 Invalid, 6 Unknown, 0 Unchecked, 25.9s Time] [2021-12-18 05:53:03,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2021-12-18 05:53:03,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3010. [2021-12-18 05:53:03,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 2132 states have (on average 1.372889305816135) internal successors, (2927), 2223 states have internal predecessors, (2927), 772 states have call successors, (772), 106 states have call predecessors, (772), 105 states have return successors, (770), 768 states have call predecessors, (770), 770 states have call successors, (770) [2021-12-18 05:53:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4469 transitions. [2021-12-18 05:53:03,734 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4469 transitions. Word has length 31 [2021-12-18 05:53:03,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:53:03,735 INFO L470 AbstractCegarLoop]: Abstraction has 3010 states and 4469 transitions. [2021-12-18 05:53:03,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 05:53:03,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4469 transitions. [2021-12-18 05:53:03,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 05:53:03,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:53:03,744 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] [2021-12-18 05:53:03,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 05:53:03,745 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:53:03,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:53:03,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1994554423, now seen corresponding path program 1 times [2021-12-18 05:53:03,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:53:03,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750708947] [2021-12-18 05:53:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:53:03,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:53:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:53:03,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:53:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:53:04,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:53:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:53:04,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:53:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:53:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 05:53:04,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:53:04,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750708947] [2021-12-18 05:53:04,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750708947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:53:04,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:53:04,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 05:53:04,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653017368] [2021-12-18 05:53:04,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:53:04,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 05:53:04,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:53:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 05:53:04,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 05:53:04,080 INFO L87 Difference]: Start difference. First operand 3010 states and 4469 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-18 05:53:07,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:09,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:12,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:14,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:17,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:21,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:23,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:25,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:27,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:29,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:33,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:35,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:53:35,396 INFO L93 Difference]: Finished difference Result 9250 states and 14218 transitions. [2021-12-18 05:53:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 05:53:35,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2021-12-18 05:53:35,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:53:35,436 INFO L225 Difference]: With dead ends: 9250 [2021-12-18 05:53:35,436 INFO L226 Difference]: Without dead ends: 6241 [2021-12-18 05:53:35,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-18 05:53:35,453 INFO L933 BasicCegarLoop]: 2723 mSDtfsCounter, 2952 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 1823 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3340 SdHoareTripleChecker+Valid, 5846 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1823 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2021-12-18 05:53:35,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3340 Valid, 5846 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1823 Valid, 1465 Invalid, 11 Unknown, 0 Unchecked, 31.0s Time] [2021-12-18 05:53:35,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2021-12-18 05:53:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6000. [2021-12-18 05:53:35,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6000 states, 4249 states have (on average 1.3732642974817604) internal successors, (5835), 4430 states have internal predecessors, (5835), 1541 states have call successors, (1541), 210 states have call predecessors, (1541), 209 states have return successors, (1559), 1535 states have call predecessors, (1559), 1539 states have call successors, (1559) [2021-12-18 05:53:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 8935 transitions. [2021-12-18 05:53:35,729 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 8935 transitions. Word has length 33 [2021-12-18 05:53:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:53:35,729 INFO L470 AbstractCegarLoop]: Abstraction has 6000 states and 8935 transitions. [2021-12-18 05:53:35,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-18 05:53:35,730 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 8935 transitions. [2021-12-18 05:53:35,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-18 05:53:35,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:53:35,733 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] [2021-12-18 05:53:35,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 05:53:35,733 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:53:35,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:53:35,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1941480318, now seen corresponding path program 1 times [2021-12-18 05:53:35,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:53:35,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830169042] [2021-12-18 05:53:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:53:35,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:53:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:53:36,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:53:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:53:36,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:53:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:53:36,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:53:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:53:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 05:53:36,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:53:36,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830169042] [2021-12-18 05:53:36,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830169042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:53:36,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:53:36,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 05:53:36,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136505937] [2021-12-18 05:53:36,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:53:36,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 05:53:36,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:53:36,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 05:53:36,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 05:53:36,085 INFO L87 Difference]: Start difference. First operand 6000 states and 8935 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 05:53:37,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:41,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:43,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:47,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:49,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:52,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:53:59,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:00,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:54:00,206 INFO L93 Difference]: Finished difference Result 12448 states and 18923 transitions. [2021-12-18 05:54:00,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 05:54:00,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2021-12-18 05:54:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:54:00,243 INFO L225 Difference]: With dead ends: 12448 [2021-12-18 05:54:00,243 INFO L226 Difference]: Without dead ends: 6453 [2021-12-18 05:54:00,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-18 05:54:00,265 INFO L933 BasicCegarLoop]: 2301 mSDtfsCounter, 361 mSDsluCounter, 4039 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 434 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 6340 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2021-12-18 05:54:00,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 6340 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1792 Invalid, 6 Unknown, 0 Unchecked, 23.8s Time] [2021-12-18 05:54:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6453 states. [2021-12-18 05:54:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6453 to 6210. [2021-12-18 05:54:00,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6210 states, 4410 states have (on average 1.3696145124716552) internal successors, (6040), 4591 states have internal predecessors, (6040), 1583 states have call successors, (1583), 217 states have call predecessors, (1583), 216 states have return successors, (1601), 1577 states have call predecessors, (1601), 1581 states have call successors, (1601) [2021-12-18 05:54:00,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 9224 transitions. [2021-12-18 05:54:00,582 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 9224 transitions. Word has length 41 [2021-12-18 05:54:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:54:00,583 INFO L470 AbstractCegarLoop]: Abstraction has 6210 states and 9224 transitions. [2021-12-18 05:54:00,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 05:54:00,584 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 9224 transitions. [2021-12-18 05:54:00,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-18 05:54:00,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:54:00,587 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:54:00,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 05:54:00,588 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:54:00,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:54:00,588 INFO L85 PathProgramCache]: Analyzing trace with hash -981262072, now seen corresponding path program 1 times [2021-12-18 05:54:00,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:54:00,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114378230] [2021-12-18 05:54:00,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:54:00,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:54:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:00,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:54:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:00,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:54:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:00,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:54:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:00,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 05:54:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:00,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:54:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:00,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:54:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-18 05:54:00,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:54:00,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114378230] [2021-12-18 05:54:00,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114378230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:54:00,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:54:00,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 05:54:00,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746967127] [2021-12-18 05:54:00,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:54:00,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 05:54:00,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:54:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 05:54:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 05:54:00,933 INFO L87 Difference]: Start difference. First operand 6210 states and 9224 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-18 05:54:03,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:06,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:08,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:10,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:13,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:15,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:20,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:54:21,036 INFO L93 Difference]: Finished difference Result 13774 states and 20817 transitions. [2021-12-18 05:54:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 05:54:21,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2021-12-18 05:54:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:54:21,071 INFO L225 Difference]: With dead ends: 13774 [2021-12-18 05:54:21,072 INFO L226 Difference]: Without dead ends: 7583 [2021-12-18 05:54:21,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-18 05:54:21,088 INFO L933 BasicCegarLoop]: 2352 mSDtfsCounter, 1101 mSDsluCounter, 3030 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 1050 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 5382 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2021-12-18 05:54:21,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1162 Valid, 5382 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 1157 Invalid, 6 Unknown, 0 Unchecked, 19.9s Time] [2021-12-18 05:54:21,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2021-12-18 05:54:21,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 7150. [2021-12-18 05:54:21,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7150 states, 5140 states have (on average 1.3626459143968872) internal successors, (7004), 5337 states have internal predecessors, (7004), 1727 states have call successors, (1727), 283 states have call predecessors, (1727), 282 states have return successors, (1745), 1721 states have call predecessors, (1745), 1725 states have call successors, (1745) [2021-12-18 05:54:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7150 states to 7150 states and 10476 transitions. [2021-12-18 05:54:21,350 INFO L78 Accepts]: Start accepts. Automaton has 7150 states and 10476 transitions. Word has length 69 [2021-12-18 05:54:21,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:54:21,351 INFO L470 AbstractCegarLoop]: Abstraction has 7150 states and 10476 transitions. [2021-12-18 05:54:21,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-18 05:54:21,351 INFO L276 IsEmpty]: Start isEmpty. Operand 7150 states and 10476 transitions. [2021-12-18 05:54:21,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-18 05:54:21,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:54:21,353 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:54:21,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 05:54:21,354 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:54:21,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:54:21,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2030980828, now seen corresponding path program 1 times [2021-12-18 05:54:21,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:54:21,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537748519] [2021-12-18 05:54:21,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:54:21,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:54:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:21,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:54:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:54:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:21,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:54:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 05:54:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:22,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:54:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:22,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:54:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:54:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-18 05:54:22,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:54:22,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537748519] [2021-12-18 05:54:22,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537748519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:54:22,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:54:22,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-18 05:54:22,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645204259] [2021-12-18 05:54:22,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:54:22,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 05:54:22,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:54:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 05:54:22,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-12-18 05:54:22,216 INFO L87 Difference]: Start difference. First operand 7150 states and 10476 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 05:54:28,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:32,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:46,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:48,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:50,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:52,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:54,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:56,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:54:58,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:00,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:02,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:04,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:06,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:08,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:10,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:12,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:14,987 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:17,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:19,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:21,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:34,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:36,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:38,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:40,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:42,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:44,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:46,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:48,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:50,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:52,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:54,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:56,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:55:58,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:00,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:02,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:04,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:06,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:08,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:16,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:18,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:20,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:22,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:24,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:26,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:28,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:30,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:32,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:49,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:56:53,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:56:53,183 INFO L93 Difference]: Finished difference Result 15716 states and 23427 transitions. [2021-12-18 05:56:53,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-18 05:56:53,183 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2021-12-18 05:56:53,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:56:53,217 INFO L225 Difference]: With dead ends: 15716 [2021-12-18 05:56:53,217 INFO L226 Difference]: Without dead ends: 8585 [2021-12-18 05:56:53,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2021-12-18 05:56:53,237 INFO L933 BasicCegarLoop]: 2316 mSDtfsCounter, 860 mSDsluCounter, 14312 mSDsCounter, 0 mSdLazyCounter, 9217 mSolverCounterSat, 942 mSolverCounterUnsat, 46 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 146.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 16628 SdHoareTripleChecker+Invalid, 10205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 942 IncrementalHoareTripleChecker+Valid, 9217 IncrementalHoareTripleChecker+Invalid, 46 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150.1s IncrementalHoareTripleChecker+Time [2021-12-18 05:56:53,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 16628 Invalid, 10205 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [942 Valid, 9217 Invalid, 46 Unknown, 0 Unchecked, 150.1s Time] [2021-12-18 05:56:53,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8585 states. [2021-12-18 05:56:53,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8585 to 8030. [2021-12-18 05:56:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8030 states, 5880 states have (on average 1.3714285714285714) internal successors, (8064), 6077 states have internal predecessors, (8064), 1823 states have call successors, (1823), 327 states have call predecessors, (1823), 326 states have return successors, (1841), 1817 states have call predecessors, (1841), 1821 states have call successors, (1841) [2021-12-18 05:56:53,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8030 states to 8030 states and 11728 transitions. [2021-12-18 05:56:53,564 INFO L78 Accepts]: Start accepts. Automaton has 8030 states and 11728 transitions. Word has length 71 [2021-12-18 05:56:53,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:56:53,565 INFO L470 AbstractCegarLoop]: Abstraction has 8030 states and 11728 transitions. [2021-12-18 05:56:53,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 05:56:53,566 INFO L276 IsEmpty]: Start isEmpty. Operand 8030 states and 11728 transitions. [2021-12-18 05:56:53,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-18 05:56:53,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:56:53,572 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:56:53,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 05:56:53,572 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:56:53,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:56:53,573 INFO L85 PathProgramCache]: Analyzing trace with hash 854739290, now seen corresponding path program 1 times [2021-12-18 05:56:53,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:56:53,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855315279] [2021-12-18 05:56:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:56:53,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:56:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:56:53,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:56:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:56:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:56:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:56:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:56:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:56:53,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 05:56:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:56:53,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:56:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:56:53,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:56:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:56:53,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 05:56:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:56:54,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 05:56:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:56:54,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 05:56:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:56:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-18 05:56:54,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:56:54,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855315279] [2021-12-18 05:56:54,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855315279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:56:54,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:56:54,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 05:56:54,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506150331] [2021-12-18 05:56:54,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:56:54,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 05:56:54,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:56:54,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 05:56:54,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-18 05:56:54,074 INFO L87 Difference]: Start difference. First operand 8030 states and 11728 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 05:56:59,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:00,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:03,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:05,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:07,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:09,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:11,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:13,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:17,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:19,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:21,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:23,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:25,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:27,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:30,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:36,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:57:37,392 INFO L93 Difference]: Finished difference Result 18010 states and 26695 transitions. [2021-12-18 05:57:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 05:57:37,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 112 [2021-12-18 05:57:37,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:57:37,435 INFO L225 Difference]: With dead ends: 18010 [2021-12-18 05:57:37,436 INFO L226 Difference]: Without dead ends: 9999 [2021-12-18 05:57:37,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-18 05:57:37,461 INFO L933 BasicCegarLoop]: 2328 mSDtfsCounter, 1593 mSDsluCounter, 5499 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 1626 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 7827 SdHoareTripleChecker+Invalid, 3693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1626 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.9s IncrementalHoareTripleChecker+Time [2021-12-18 05:57:37,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1656 Valid, 7827 Invalid, 3693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1626 Valid, 2053 Invalid, 14 Unknown, 0 Unchecked, 42.9s Time] [2021-12-18 05:57:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9999 states. [2021-12-18 05:57:37,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9999 to 9370. [2021-12-18 05:57:37,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9370 states, 6960 states have (on average 1.3646551724137932) internal successors, (9498), 7173 states have internal predecessors, (9498), 1983 states have call successors, (1983), 427 states have call predecessors, (1983), 426 states have return successors, (2001), 1977 states have call predecessors, (2001), 1981 states have call successors, (2001) [2021-12-18 05:57:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9370 states to 9370 states and 13482 transitions. [2021-12-18 05:57:37,897 INFO L78 Accepts]: Start accepts. Automaton has 9370 states and 13482 transitions. Word has length 112 [2021-12-18 05:57:37,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:57:37,897 INFO L470 AbstractCegarLoop]: Abstraction has 9370 states and 13482 transitions. [2021-12-18 05:57:37,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 05:57:37,898 INFO L276 IsEmpty]: Start isEmpty. Operand 9370 states and 13482 transitions. [2021-12-18 05:57:37,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-18 05:57:37,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:57:37,905 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:57:37,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 05:57:37,905 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:57:37,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:57:37,906 INFO L85 PathProgramCache]: Analyzing trace with hash -321771883, now seen corresponding path program 1 times [2021-12-18 05:57:37,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:57:37,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606330796] [2021-12-18 05:57:37,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:57:37,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:57:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:57:38,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:57:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:57:38,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:57:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:57:38,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:57:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:57:38,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 05:57:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:57:38,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:57:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:57:38,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:57:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:57:38,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 05:57:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:57:38,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 05:57:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:57:38,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 05:57:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:57:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-18 05:57:38,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:57:38,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606330796] [2021-12-18 05:57:38,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606330796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:57:38,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:57:38,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-18 05:57:38,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559659893] [2021-12-18 05:57:38,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:57:38,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 05:57:38,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:57:38,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 05:57:38,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-18 05:57:38,861 INFO L87 Difference]: Start difference. First operand 9370 states and 13482 transitions. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-18 05:57:43,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:45,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:47,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:57:56,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:02,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:04,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:07,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:14,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:16,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:18,618 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:20,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:22,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:24,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:26,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:28,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:30,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:32,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:34,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:37,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:39,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:41,026 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:43,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:45,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:47,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:58:49,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:00,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:02,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:04,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:06,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:08,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:10,444 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:12,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:14,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:16,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:18,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:20,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:22,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:24,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:26,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:28,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:30,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:32,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:34,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:41,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:43,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:45,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:47,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:50,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:52,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:54,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:59:56,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:00:14,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:00:17,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:00:17,307 INFO L93 Difference]: Finished difference Result 20283 states and 29692 transitions. [2021-12-18 06:00:17,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-18 06:00:17,308 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 115 [2021-12-18 06:00:17,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:00:17,356 INFO L225 Difference]: With dead ends: 20283 [2021-12-18 06:00:17,357 INFO L226 Difference]: Without dead ends: 10932 [2021-12-18 06:00:17,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2021-12-18 06:00:17,380 INFO L933 BasicCegarLoop]: 2427 mSDtfsCounter, 1355 mSDsluCounter, 15102 mSDsCounter, 0 mSdLazyCounter, 8843 mSolverCounterSat, 1452 mSolverCounterUnsat, 45 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 153.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 17529 SdHoareTripleChecker+Invalid, 10340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1452 IncrementalHoareTripleChecker+Valid, 8843 IncrementalHoareTripleChecker+Invalid, 45 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 157.4s IncrementalHoareTripleChecker+Time [2021-12-18 06:00:17,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 17529 Invalid, 10340 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1452 Valid, 8843 Invalid, 45 Unknown, 0 Unchecked, 157.4s Time] [2021-12-18 06:00:17,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states. [2021-12-18 06:00:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10932 to 9306. [2021-12-18 06:00:17,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9306 states, 6912 states have (on average 1.3654513888888888) internal successors, (9438), 7125 states have internal predecessors, (9438), 1975 states have call successors, (1975), 419 states have call predecessors, (1975), 418 states have return successors, (1993), 1969 states have call predecessors, (1993), 1973 states have call successors, (1993) [2021-12-18 06:00:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9306 states to 9306 states and 13406 transitions. [2021-12-18 06:00:17,851 INFO L78 Accepts]: Start accepts. Automaton has 9306 states and 13406 transitions. Word has length 115 [2021-12-18 06:00:17,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:00:17,853 INFO L470 AbstractCegarLoop]: Abstraction has 9306 states and 13406 transitions. [2021-12-18 06:00:17,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-18 06:00:17,854 INFO L276 IsEmpty]: Start isEmpty. Operand 9306 states and 13406 transitions. [2021-12-18 06:00:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-18 06:00:17,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:00:17,859 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:00:17,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 06:00:17,859 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:00:17,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:00:17,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1236384907, now seen corresponding path program 1 times [2021-12-18 06:00:17,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:00:17,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272492660] [2021-12-18 06:00:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:00:17,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:00:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:00,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:01:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:00,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:01:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:00,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:01:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:00,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 06:01:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:00,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:01:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:01,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:01:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:01,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 06:01:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:01,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 06:01:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:01,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 06:01:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 06:01:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:01,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 06:01:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:01,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 06:01:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:01,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 06:01:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:01,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 06:01:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 06:01:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 06:01:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-18 06:01:01,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:01:01,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272492660] [2021-12-18 06:01:01,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272492660] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 06:01:01,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055994297] [2021-12-18 06:01:01,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:01:01,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 06:01:01,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 06:01:01,348 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) [2021-12-18 06:01:01,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 06:01:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:01:04,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 10057 conjuncts, 89 conjunts are in the unsatisfiable core [2021-12-18 06:01:04,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:01:04,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 06:01:04,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-18 06:01:06,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 58 [2021-12-18 06:01:06,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:01:06,868 INFO L244 Elim1Store]: Index analysis took 332 ms [2021-12-18 06:01:08,073 INFO L354 Elim1Store]: treesize reduction 581, result has 21.0 percent of original size [2021-12-18 06:01:08,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 20 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 55 treesize of output 189 [2021-12-18 06:01:08,213 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-18 06:01:08,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 58 [2021-12-18 06:01:08,375 INFO L354 Elim1Store]: treesize reduction 64, result has 16.9 percent of original size [2021-12-18 06:01:08,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 47 [2021-12-18 06:01:09,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-12-18 06:01:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-12-18 06:01:09,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 06:01:10,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055994297] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 06:01:10,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 06:01:10,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2021-12-18 06:01:10,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573957276] [2021-12-18 06:01:10,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 06:01:10,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-18 06:01:10,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:01:10,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-18 06:01:10,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2021-12-18 06:01:10,600 INFO L87 Difference]: Start difference. First operand 9306 states and 13406 transitions. Second operand has 26 states, 24 states have (on average 4.291666666666667) internal successors, (103), 18 states have internal predecessors, (103), 7 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (29), 8 states have call predecessors, (29), 6 states have call successors, (29) [2021-12-18 06:01:12,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:13,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:14,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:15,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:16,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:20,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:22,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:24,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:26,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:28,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:30,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:32,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:34,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:39,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:41,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:43,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:48,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:50,139 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:52,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:54,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:56,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:01:58,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:00,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:02,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:04,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:06,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:08,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:10,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:22,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:24,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:26,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:28,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:30,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:32,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:34,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:36,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:38,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:40,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:42,834 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:44,840 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:53,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:55,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:57,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:02:59,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:03:01,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:03:03,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:03:05,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:03:07,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:03:25,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:03:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:03:28,517 INFO L93 Difference]: Finished difference Result 20853 states and 30769 transitions. [2021-12-18 06:03:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-18 06:03:28,518 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 4.291666666666667) internal successors, (103), 18 states have internal predecessors, (103), 7 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (29), 8 states have call predecessors, (29), 6 states have call successors, (29) Word has length 150 [2021-12-18 06:03:28,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:03:28,572 INFO L225 Difference]: With dead ends: 20853 [2021-12-18 06:03:28,572 INFO L226 Difference]: Without dead ends: 11566 [2021-12-18 06:03:28,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=194, Invalid=1528, Unknown=0, NotChecked=0, Total=1722 [2021-12-18 06:03:28,601 INFO L933 BasicCegarLoop]: 2312 mSDtfsCounter, 885 mSDsluCounter, 18684 mSDsCounter, 0 mSdLazyCounter, 6818 mSolverCounterSat, 908 mSolverCounterUnsat, 40 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 20996 SdHoareTripleChecker+Invalid, 8985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 6818 IncrementalHoareTripleChecker+Invalid, 40 IncrementalHoareTripleChecker+Unknown, 1219 IncrementalHoareTripleChecker+Unchecked, 136.4s IncrementalHoareTripleChecker+Time [2021-12-18 06:03:28,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 20996 Invalid, 8985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [908 Valid, 6818 Invalid, 40 Unknown, 1219 Unchecked, 136.4s Time] [2021-12-18 06:03:28,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11566 states. [2021-12-18 06:03:29,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11566 to 10530. [2021-12-18 06:03:29,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10530 states, 7976 states have (on average 1.3778836509528585) internal successors, (10990), 8237 states have internal predecessors, (10990), 2103 states have call successors, (2103), 451 states have call predecessors, (2103), 450 states have return successors, (2201), 2049 states have call predecessors, (2201), 2101 states have call successors, (2201) [2021-12-18 06:03:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10530 states to 10530 states and 15294 transitions. [2021-12-18 06:03:29,230 INFO L78 Accepts]: Start accepts. Automaton has 10530 states and 15294 transitions. Word has length 150 [2021-12-18 06:03:29,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:03:29,231 INFO L470 AbstractCegarLoop]: Abstraction has 10530 states and 15294 transitions. [2021-12-18 06:03:29,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 4.291666666666667) internal successors, (103), 18 states have internal predecessors, (103), 7 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (29), 8 states have call predecessors, (29), 6 states have call successors, (29) [2021-12-18 06:03:29,231 INFO L276 IsEmpty]: Start isEmpty. Operand 10530 states and 15294 transitions. [2021-12-18 06:03:29,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-18 06:03:29,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:03:29,241 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:03:29,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 06:03:29,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 06:03:29,464 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:03:29,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:03:29,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1594078354, now seen corresponding path program 1 times [2021-12-18 06:03:29,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:03:29,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083683982] [2021-12-18 06:03:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:03:29,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:03:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:03:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:37,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:03:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:03:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:37,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 06:03:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:03:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:03:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 06:03:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 06:03:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 06:03:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 06:03:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 06:03:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 06:03:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 06:03:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 06:03:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 06:03:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 06:03:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 06:03:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-12-18 06:03:38,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:03:38,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083683982] [2021-12-18 06:03:38,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083683982] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 06:03:38,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204024541] [2021-12-18 06:03:38,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:03:38,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 06:03:38,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 06:03:38,598 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) [2021-12-18 06:03:38,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 06:03:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:03:41,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 10118 conjuncts, 98 conjunts are in the unsatisfiable core [2021-12-18 06:03:42,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 06:03:42,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 06:03:42,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-18 06:03:43,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 06:03:43,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-18 06:03:44,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 58 [2021-12-18 06:03:44,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:44,458 INFO L244 Elim1Store]: Index analysis took 282 ms [2021-12-18 06:03:45,480 INFO L354 Elim1Store]: treesize reduction 581, result has 21.0 percent of original size [2021-12-18 06:03:45,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 20 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 55 treesize of output 189 [2021-12-18 06:03:45,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 06:03:45,614 INFO L354 Elim1Store]: treesize reduction 32, result has 22.0 percent of original size [2021-12-18 06:03:45,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 61 [2021-12-18 06:03:45,755 INFO L354 Elim1Store]: treesize reduction 64, result has 16.9 percent of original size [2021-12-18 06:03:45,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 47 [2021-12-18 06:03:46,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-18 06:03:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-12-18 06:03:46,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 06:04:13,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204024541] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 06:04:13,703 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 06:04:13,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 30 [2021-12-18 06:04:13,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66072505] [2021-12-18 06:04:13,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 06:04:13,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-18 06:04:13,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:04:13,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-18 06:04:13,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1003, Unknown=12, NotChecked=0, Total=1122 [2021-12-18 06:04:13,706 INFO L87 Difference]: Start difference. First operand 10530 states and 15294 transitions. Second operand has 30 states, 28 states have (on average 4.821428571428571) internal successors, (135), 21 states have internal predecessors, (135), 9 states have call successors, (36), 10 states have call predecessors, (36), 9 states have return successors, (31), 10 states have call predecessors, (31), 8 states have call successors, (31) [2021-12-18 06:04:15,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:04:16,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:04:20,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:04:25,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:04:28,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:04:46,037 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:04:48,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:04:50,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:04:52,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:04:54,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:04:56,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:04:58,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:00,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:02,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:04,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:06,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:08,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:10,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:12,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:14,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:16,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:30,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:32,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:34,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:36,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:05:38,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15