./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--rapidio--rapidio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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--rapidio--rapidio.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 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 02:59:10,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 02:59:10,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 02:59:10,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 02:59:10,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 02:59:10,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 02:59:10,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 02:59:10,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 02:59:10,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 02:59:10,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 02:59:10,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 02:59:10,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 02:59:10,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 02:59:10,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 02:59:10,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 02:59:10,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 02:59:10,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 02:59:10,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 02:59:10,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 02:59:10,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 02:59:10,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 02:59:10,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 02:59:10,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 02:59:10,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 02:59:10,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 02:59:10,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 02:59:10,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 02:59:10,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 02:59:10,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 02:59:10,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 02:59:10,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 02:59:10,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 02:59:10,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 02:59:10,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 02:59:10,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 02:59:10,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 02:59:10,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 02:59:10,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 02:59:10,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 02:59:10,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 02:59:10,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 02:59:10,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 02:59:10,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 02:59:10,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 02:59:10,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 02:59:10,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 02:59:10,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 02:59:10,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 02:59:10,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 02:59:10,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 02:59:10,676 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 02:59:10,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 02:59:10,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 02:59:10,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 02:59:10,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 02:59:10,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 02:59:10,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 02:59:10,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 02:59:10,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 02:59:10,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 02:59:10,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 02:59:10,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 02:59:10,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 02:59:10,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 02:59:10,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 02:59:10,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 02:59:10,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 02:59:10,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 02:59:10,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 02:59:10,680 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 02:59:10,680 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 02:59:10,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 02:59:10,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 02:59:10,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 [2021-11-17 02:59:10,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 02:59:10,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 02:59:10,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 02:59:10,884 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 02:59:10,887 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 02:59:10,888 INFO L432 ainManager$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--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-17 02:59:10,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a202017cf/a6b39af6e81d4a83b11236e95ccbed49/FLAG5fca9761a [2021-11-17 02:59:11,599 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 02:59:11,600 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--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-17 02:59:11,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a202017cf/a6b39af6e81d4a83b11236e95ccbed49/FLAG5fca9761a [2021-11-17 02:59:11,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a202017cf/a6b39af6e81d4a83b11236e95ccbed49 [2021-11-17 02:59:11,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 02:59:11,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 02:59:11,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 02:59:11,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 02:59:11,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 02:59:11,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:59:11" (1/1) ... [2021-11-17 02:59:11,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d505141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:59:11, skipping insertion in model container [2021-11-17 02:59:11,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:59:11" (1/1) ... [2021-11-17 02:59:11,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 02:59:11,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 02:59:13,286 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--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2021-11-17 02:59:13,338 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 02:59:13,448 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 02:59:13,832 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--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2021-11-17 02:59:13,837 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 02:59:13,987 INFO L208 MainTranslator]: Completed translation [2021-11-17 02:59:13,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:59:13 WrapperNode [2021-11-17 02:59:13,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 02:59:13,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 02:59:13,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 02:59:13,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 02:59:13,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:59:13" (1/1) ... [2021-11-17 02:59:14,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:59:13" (1/1) ... [2021-11-17 02:59:14,277 INFO L137 Inliner]: procedures = 303, calls = 3661, calls flagged for inlining = 138, calls inlined = 95, statements flattened = 4739 [2021-11-17 02:59:14,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 02:59:14,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 02:59:14,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 02:59:14,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 02:59:14,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:59:13" (1/1) ... [2021-11-17 02:59:14,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:59:13" (1/1) ... [2021-11-17 02:59:14,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:59:13" (1/1) ... [2021-11-17 02:59:14,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:59:13" (1/1) ... [2021-11-17 02:59:14,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:59:13" (1/1) ... [2021-11-17 02:59:14,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:59:13" (1/1) ... [2021-11-17 02:59:14,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:59:13" (1/1) ... [2021-11-17 02:59:14,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 02:59:14,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 02:59:14,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 02:59:14,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 02:59:14,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:59:13" (1/1) ... [2021-11-17 02:59:14,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 02:59:14,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:59:14,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-17 02:59:14,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-17 02:59:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure rio_uevent [2021-11-17 02:59:14,668 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_uevent [2021-11-17 02:59:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-11-17 02:59:14,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-11-17 02:59:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 02:59:14,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 02:59:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-17 02:59:14,668 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-17 02:59:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 02:59:14,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 02:59:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-17 02:59:14,669 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-17 02:59:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-17 02:59:14,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-17 02:59:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-11-17 02:59:14,670 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-11-17 02:59:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 02:59:14,670 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 02:59:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 02:59:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 02:59:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_16 [2021-11-17 02:59:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_16 [2021-11-17 02:59:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-11-17 02:59:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-11-17 02:59:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 02:59:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 02:59:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_remove [2021-11-17 02:59:14,672 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_remove [2021-11-17 02:59:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 02:59:14,672 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 02:59:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure bus_scan_store [2021-11-17 02:59:14,672 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_scan_store [2021-11-17 02:59:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-17 02:59:14,673 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-17 02:59:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-17 02:59:14,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-17 02:59:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure disc_work_handler [2021-11-17 02:59:14,674 INFO L138 BoogieDeclarations]: Found implementation of procedure disc_work_handler [2021-11-17 02:59:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 02:59:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_put [2021-11-17 02:59:14,674 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_put [2021-11-17 02:59:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 02:59:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-17 02:59:14,674 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-17 02:59:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-17 02:59:14,675 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-17 02:59:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_16 [2021-11-17 02:59:14,675 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_16 [2021-11-17 02:59:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 02:59:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 02:59:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_read_config_32 [2021-11-17 02:59:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_read_config_32 [2021-11-17 02:59:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_write_config_32 [2021-11-17 02:59:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_write_config_32 [2021-11-17 02:59:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-17 02:59:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-17 02:59:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-17 02:59:14,678 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-17 02:59:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure rio_name [2021-11-17 02:59:14,678 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_name [2021-11-17 02:59:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-17 02:59:14,679 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-17 02:59:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_probe [2021-11-17 02:59:14,679 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_probe [2021-11-17 02:59:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-17 02:59:14,679 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-17 02:59:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_32 [2021-11-17 02:59:14,679 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_32 [2021-11-17 02:59:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-17 02:59:14,680 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-17 02:59:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 02:59:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~~u32~0~TO~int [2021-11-17 02:59:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~~u32~0~TO~int [2021-11-17 02:59:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_get [2021-11-17 02:59:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_get [2021-11-17 02:59:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 02:59:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 02:59:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 02:59:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 02:59:14,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 02:59:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-17 02:59:14,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-17 02:59:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 02:59:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-17 02:59:14,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-17 02:59:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 02:59:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 02:59:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-17 02:59:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure release_resource [2021-11-17 02:59:14,683 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resource [2021-11-17 02:59:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_8 [2021-11-17 02:59:14,684 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_8 [2021-11-17 02:59:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_bus [2021-11-17 02:59:14,684 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_bus [2021-11-17 02:59:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_32 [2021-11-17 02:59:14,684 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_32 [2021-11-17 02:59:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-17 02:59:14,685 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-17 02:59:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_device [2021-11-17 02:59:14,686 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_device [2021-11-17 02:59:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-17 02:59:14,686 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-17 02:59:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_8 [2021-11-17 02:59:14,686 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_8 [2021-11-17 02:59:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 02:59:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 02:59:14,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 02:59:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~$Pointer$~TO~int [2021-11-17 02:59:14,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~$Pointer$~TO~int [2021-11-17 02:59:15,375 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 02:59:15,378 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 02:59:15,518 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 02:59:22,234 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 02:59:22,247 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 02:59:22,247 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 02:59:22,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:59:22 BoogieIcfgContainer [2021-11-17 02:59:22,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 02:59:22,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 02:59:22,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 02:59:22,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 02:59:22,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 02:59:11" (1/3) ... [2021-11-17 02:59:22,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbdf856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:59:22, skipping insertion in model container [2021-11-17 02:59:22,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:59:13" (2/3) ... [2021-11-17 02:59:22,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbdf856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:59:22, skipping insertion in model container [2021-11-17 02:59:22,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:59:22" (3/3) ... [2021-11-17 02:59:22,257 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-17 02:59:22,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 02:59:22,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 02:59:22,303 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 02:59:22,309 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 02:59:22,309 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 02:59:22,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 918 states, 672 states have (on average 1.375) internal successors, (924), 703 states have internal predecessors, (924), 197 states have call successors, (197), 48 states have call predecessors, (197), 47 states have return successors, (177), 176 states have call predecessors, (177), 177 states have call successors, (177) [2021-11-17 02:59:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-17 02:59:22,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:59:22,354 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:59:22,355 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:59:22,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:59:22,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1336601579, now seen corresponding path program 1 times [2021-11-17 02:59:22,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:59:22,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856261116] [2021-11-17 02:59:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:59:22,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:59:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:23,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:59:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:23,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:23,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:59:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:23,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:23,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:59:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:23,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:23,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:59:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:23,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-17 02:59:23,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:59:23,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856261116] [2021-11-17 02:59:23,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856261116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:59:23,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:59:23,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 02:59:23,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882984921] [2021-11-17 02:59:23,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:59:23,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 02:59:23,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:59:23,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 02:59:23,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-17 02:59:23,432 INFO L87 Difference]: Start difference. First operand has 918 states, 672 states have (on average 1.375) internal successors, (924), 703 states have internal predecessors, (924), 197 states have call successors, (197), 48 states have call predecessors, (197), 47 states have return successors, (177), 176 states have call predecessors, (177), 177 states have call successors, (177) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-17 02:59:25,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:59:27,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:59:29,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:59:29,017 INFO L93 Difference]: Finished difference Result 1960 states and 2881 transitions. [2021-11-17 02:59:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 02:59:29,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 84 [2021-11-17 02:59:29,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:59:29,040 INFO L225 Difference]: With dead ends: 1960 [2021-11-17 02:59:29,041 INFO L226 Difference]: Without dead ends: 1020 [2021-11-17 02:59:29,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-17 02:59:29,054 INFO L933 BasicCegarLoop]: 1210 mSDtfsCounter, 402 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 236 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-17 02:59:29,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 2581 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 430 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2021-11-17 02:59:29,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-11-17 02:59:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 891. [2021-11-17 02:59:29,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 667 states have (on average 1.343328335832084) internal successors, (896), 676 states have internal predecessors, (896), 177 states have call successors, (177), 47 states have call predecessors, (177), 46 states have return successors, (175), 174 states have call predecessors, (175), 175 states have call successors, (175) [2021-11-17 02:59:29,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1248 transitions. [2021-11-17 02:59:29,149 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1248 transitions. Word has length 84 [2021-11-17 02:59:29,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:59:29,150 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 1248 transitions. [2021-11-17 02:59:29,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-17 02:59:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1248 transitions. [2021-11-17 02:59:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-17 02:59:29,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:59:29,154 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:59:29,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 02:59:29,155 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:59:29,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:59:29,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1250671603, now seen corresponding path program 1 times [2021-11-17 02:59:29,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:59:29,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735898018] [2021-11-17 02:59:29,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:59:29,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:59:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:29,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:59:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:29,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:29,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:29,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:59:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:29,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:29,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:29,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:59:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:29,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:29,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:29,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:59:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:29,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-17 02:59:29,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:59:29,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735898018] [2021-11-17 02:59:29,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735898018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:59:29,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:59:29,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 02:59:29,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109232959] [2021-11-17 02:59:29,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:59:29,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 02:59:29,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:59:29,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 02:59:29,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-17 02:59:29,765 INFO L87 Difference]: Start difference. First operand 891 states and 1248 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, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-17 02:59:31,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:59:34,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:59:36,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:59:36,260 INFO L93 Difference]: Finished difference Result 2882 states and 4084 transitions. [2021-11-17 02:59:36,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 02:59:36,261 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, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2021-11-17 02:59:36,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:59:36,276 INFO L225 Difference]: With dead ends: 2882 [2021-11-17 02:59:36,276 INFO L226 Difference]: Without dead ends: 2003 [2021-11-17 02:59:36,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-17 02:59:36,281 INFO L933 BasicCegarLoop]: 1294 mSDtfsCounter, 2414 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 1085 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1085 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-17 02:59:36,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2530 Valid, 3122 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1085 Valid, 770 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2021-11-17 02:59:36,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2021-11-17 02:59:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1742. [2021-11-17 02:59:36,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 1306 states have (on average 1.346094946401225) internal successors, (1758), 1323 states have internal predecessors, (1758), 343 states have call successors, (343), 93 states have call predecessors, (343), 92 states have return successors, (341), 339 states have call predecessors, (341), 341 states have call successors, (341) [2021-11-17 02:59:36,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2442 transitions. [2021-11-17 02:59:36,383 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2442 transitions. Word has length 84 [2021-11-17 02:59:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:59:36,385 INFO L470 AbstractCegarLoop]: Abstraction has 1742 states and 2442 transitions. [2021-11-17 02:59:36,385 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, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-17 02:59:36,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2442 transitions. [2021-11-17 02:59:36,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-17 02:59:36,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:59:36,391 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:59:36,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 02:59:36,392 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:59:36,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:59:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1903541710, now seen corresponding path program 1 times [2021-11-17 02:59:36,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:59:36,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637326442] [2021-11-17 02:59:36,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:59:36,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:59:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:59:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:36,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:36,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:59:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:36,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:36,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:36,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:59:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:36,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:36,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:59:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:36,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:36,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-17 02:59:36,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:59:36,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637326442] [2021-11-17 02:59:36,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637326442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:59:36,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:59:36,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 02:59:36,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428715239] [2021-11-17 02:59:36,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:59:36,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 02:59:36,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:59:36,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 02:59:36,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-17 02:59:36,895 INFO L87 Difference]: Start difference. First operand 1742 states and 2442 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-17 02:59:39,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:59:41,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:59:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:59:44,274 INFO L93 Difference]: Finished difference Result 5715 states and 8191 transitions. [2021-11-17 02:59:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 02:59:44,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 90 [2021-11-17 02:59:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:59:44,298 INFO L225 Difference]: With dead ends: 5715 [2021-11-17 02:59:44,298 INFO L226 Difference]: Without dead ends: 3982 [2021-11-17 02:59:44,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-17 02:59:44,308 INFO L933 BasicCegarLoop]: 1323 mSDtfsCounter, 1973 mSDsluCounter, 2588 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 644 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2086 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-17 02:59:44,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2086 Valid, 3911 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 981 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2021-11-17 02:59:44,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2021-11-17 02:59:44,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3490. [2021-11-17 02:59:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 2611 states have (on average 1.3466104940635772) internal successors, (3516), 2654 states have internal predecessors, (3516), 688 states have call successors, (688), 185 states have call predecessors, (688), 190 states have return successors, (746), 684 states have call predecessors, (746), 686 states have call successors, (746) [2021-11-17 02:59:44,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 4950 transitions. [2021-11-17 02:59:44,476 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 4950 transitions. Word has length 90 [2021-11-17 02:59:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:59:44,477 INFO L470 AbstractCegarLoop]: Abstraction has 3490 states and 4950 transitions. [2021-11-17 02:59:44,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-17 02:59:44,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 4950 transitions. [2021-11-17 02:59:44,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-17 02:59:44,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:59:44,488 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:59:44,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 02:59:44,489 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:59:44,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:59:44,489 INFO L85 PathProgramCache]: Analyzing trace with hash -842548841, now seen corresponding path program 1 times [2021-11-17 02:59:44,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:59:44,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33020639] [2021-11-17 02:59:44,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:59:44,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:59:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:44,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:59:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:44,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:44,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:44,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:59:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:44,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:44,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:44,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:59:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:44,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:44,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:59:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:45,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 02:59:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:45,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 02:59:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:45,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-17 02:59:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-17 02:59:45,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:59:45,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33020639] [2021-11-17 02:59:45,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33020639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:59:45,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:59:45,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 02:59:45,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448426590] [2021-11-17 02:59:45,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:59:45,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:59:45,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:59:45,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:59:45,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:59:45,039 INFO L87 Difference]: Start difference. First operand 3490 states and 4950 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-17 02:59:47,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:59:49,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:59:53,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:59:53,378 INFO L93 Difference]: Finished difference Result 12186 states and 17575 transitions. [2021-11-17 02:59:53,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 02:59:53,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 117 [2021-11-17 02:59:53,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:59:53,429 INFO L225 Difference]: With dead ends: 12186 [2021-11-17 02:59:53,430 INFO L226 Difference]: Without dead ends: 8708 [2021-11-17 02:59:53,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-17 02:59:53,448 INFO L933 BasicCegarLoop]: 1256 mSDtfsCounter, 3352 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 1655 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3514 SdHoareTripleChecker+Valid, 4227 SdHoareTripleChecker+Invalid, 3476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1655 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-17 02:59:53,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3514 Valid, 4227 Invalid, 3476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1655 Valid, 1819 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2021-11-17 02:59:53,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8708 states. [2021-11-17 02:59:53,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8708 to 7416. [2021-11-17 02:59:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7416 states, 5555 states have (on average 1.3414941494149415) internal successors, (7452), 5634 states have internal predecessors, (7452), 1464 states have call successors, (1464), 369 states have call predecessors, (1464), 396 states have return successors, (1654), 1484 states have call predecessors, (1654), 1462 states have call successors, (1654) [2021-11-17 02:59:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7416 states to 7416 states and 10570 transitions. [2021-11-17 02:59:53,826 INFO L78 Accepts]: Start accepts. Automaton has 7416 states and 10570 transitions. Word has length 117 [2021-11-17 02:59:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:59:53,826 INFO L470 AbstractCegarLoop]: Abstraction has 7416 states and 10570 transitions. [2021-11-17 02:59:53,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-17 02:59:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7416 states and 10570 transitions. [2021-11-17 02:59:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-17 02:59:53,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:59:53,831 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:59:53,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 02:59:53,831 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:59:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:59:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash -433745165, now seen corresponding path program 1 times [2021-11-17 02:59:53,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:59:53,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031060912] [2021-11-17 02:59:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:59:53,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:59:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:59:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:59:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:59:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:59:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:59:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:59:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 02:59:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-17 02:59:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 02:59:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:59:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-17 02:59:54,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:59:54,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031060912] [2021-11-17 02:59:54,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031060912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:59:54,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:59:54,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 02:59:54,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288362514] [2021-11-17 02:59:54,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:59:54,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:59:54,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:59:54,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:59:54,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:59:54,246 INFO L87 Difference]: Start difference. First operand 7416 states and 10570 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-17 02:59:56,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:59:58,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:02,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:00:02,565 INFO L93 Difference]: Finished difference Result 24024 states and 34643 transitions. [2021-11-17 03:00:02,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 03:00:02,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 129 [2021-11-17 03:00:02,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:00:02,676 INFO L225 Difference]: With dead ends: 24024 [2021-11-17 03:00:02,676 INFO L226 Difference]: Without dead ends: 16620 [2021-11-17 03:00:02,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-17 03:00:02,717 INFO L933 BasicCegarLoop]: 1461 mSDtfsCounter, 3061 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 1561 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3223 SdHoareTripleChecker+Valid, 4531 SdHoareTripleChecker+Invalid, 3448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1561 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-17 03:00:02,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3223 Valid, 4531 Invalid, 3448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1561 Valid, 1885 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2021-11-17 03:00:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16620 states. [2021-11-17 03:00:03,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16620 to 14208. [2021-11-17 03:00:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14208 states, 10627 states have (on average 1.336595464383175) internal successors, (14204), 10774 states have internal predecessors, (14204), 2814 states have call successors, (2814), 713 states have call predecessors, (2814), 766 states have return successors, (3184), 2856 states have call predecessors, (3184), 2812 states have call successors, (3184) [2021-11-17 03:00:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14208 states to 14208 states and 20202 transitions. [2021-11-17 03:00:03,463 INFO L78 Accepts]: Start accepts. Automaton has 14208 states and 20202 transitions. Word has length 129 [2021-11-17 03:00:03,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:00:03,464 INFO L470 AbstractCegarLoop]: Abstraction has 14208 states and 20202 transitions. [2021-11-17 03:00:03,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-17 03:00:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 14208 states and 20202 transitions. [2021-11-17 03:00:03,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-17 03:00:03,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:00:03,468 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:00:03,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 03:00:03,469 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:00:03,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:00:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1354239815, now seen corresponding path program 1 times [2021-11-17 03:00:03,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:00:03,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909322925] [2021-11-17 03:00:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:00:03,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:00:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:00:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:00:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:00:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:00:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:00:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:00:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 03:00:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-17 03:00:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 03:00:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 03:00:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:03,981 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-17 03:00:03,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:00:03,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909322925] [2021-11-17 03:00:03,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909322925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:00:03,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:00:03,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:00:03,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661836335] [2021-11-17 03:00:03,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:00:03,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:00:03,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:00:03,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:00:03,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:00:03,990 INFO L87 Difference]: Start difference. First operand 14208 states and 20202 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:00:06,089 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:08,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:10,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:00:14,373 INFO L93 Difference]: Finished difference Result 40932 states and 58357 transitions. [2021-11-17 03:00:14,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 03:00:14,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 167 [2021-11-17 03:00:14,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:00:14,488 INFO L225 Difference]: With dead ends: 40932 [2021-11-17 03:00:14,488 INFO L226 Difference]: Without dead ends: 26736 [2021-11-17 03:00:14,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-17 03:00:14,553 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 2544 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 1693 mSolverCounterSat, 1538 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 4619 SdHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1538 IncrementalHoareTripleChecker+Valid, 1693 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-17 03:00:14,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2690 Valid, 4619 Invalid, 3234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1538 Valid, 1693 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2021-11-17 03:00:14,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26736 states. [2021-11-17 03:00:15,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26736 to 23652. [2021-11-17 03:00:15,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23652 states, 17741 states have (on average 1.3345358209796516) internal successors, (23676), 17944 states have internal predecessors, (23676), 4610 states have call successors, (4610), 1223 states have call predecessors, (4610), 1300 states have return successors, (5032), 4644 states have call predecessors, (5032), 4608 states have call successors, (5032) [2021-11-17 03:00:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23652 states to 23652 states and 33318 transitions. [2021-11-17 03:00:15,692 INFO L78 Accepts]: Start accepts. Automaton has 23652 states and 33318 transitions. Word has length 167 [2021-11-17 03:00:15,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:00:15,694 INFO L470 AbstractCegarLoop]: Abstraction has 23652 states and 33318 transitions. [2021-11-17 03:00:15,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 03:00:15,694 INFO L276 IsEmpty]: Start isEmpty. Operand 23652 states and 33318 transitions. [2021-11-17 03:00:15,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-17 03:00:15,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:00:15,705 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:00:15,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 03:00:15,705 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:00:15,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:00:15,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1911466864, now seen corresponding path program 1 times [2021-11-17 03:00:15,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:00:15,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949297017] [2021-11-17 03:00:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:00:15,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:00:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:00:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:00:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:00:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:00:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 03:00:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 03:00:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 03:00:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 03:00:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-17 03:00:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 03:00:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-17 03:00:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-11-17 03:00:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-17 03:00:16,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:00:16,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949297017] [2021-11-17 03:00:16,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949297017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:00:16,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:00:16,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:00:16,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258074652] [2021-11-17 03:00:16,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:00:16,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:00:16,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:00:16,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:00:16,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:00:16,435 INFO L87 Difference]: Start difference. First operand 23652 states and 33318 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-17 03:00:18,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:20,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:23,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:25,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:29,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:00:29,659 INFO L93 Difference]: Finished difference Result 63836 states and 90651 transitions. [2021-11-17 03:00:29,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-17 03:00:29,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 208 [2021-11-17 03:00:29,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:00:29,831 INFO L225 Difference]: With dead ends: 63836 [2021-11-17 03:00:29,831 INFO L226 Difference]: Without dead ends: 40196 [2021-11-17 03:00:29,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-17 03:00:29,909 INFO L933 BasicCegarLoop]: 1852 mSDtfsCounter, 3917 mSDsluCounter, 4142 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 2263 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 5994 SdHoareTripleChecker+Invalid, 4211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2263 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-17 03:00:29,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4083 Valid, 5994 Invalid, 4211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2263 Valid, 1944 Invalid, 4 Unknown, 0 Unchecked, 12.4s Time] [2021-11-17 03:00:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40196 states. [2021-11-17 03:00:31,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40196 to 35240. [2021-11-17 03:00:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35240 states, 26507 states have (on average 1.334138152186215) internal successors, (35364), 26798 states have internal predecessors, (35364), 6804 states have call successors, (6804), 1817 states have call predecessors, (6804), 1928 states have return successors, (7422), 6856 states have call predecessors, (7422), 6802 states have call successors, (7422) [2021-11-17 03:00:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35240 states to 35240 states and 49590 transitions. [2021-11-17 03:00:31,432 INFO L78 Accepts]: Start accepts. Automaton has 35240 states and 49590 transitions. Word has length 208 [2021-11-17 03:00:31,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:00:31,432 INFO L470 AbstractCegarLoop]: Abstraction has 35240 states and 49590 transitions. [2021-11-17 03:00:31,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-17 03:00:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 35240 states and 49590 transitions. [2021-11-17 03:00:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-17 03:00:31,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:00:31,448 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:00:31,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 03:00:31,449 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:00:31,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:00:31,450 INFO L85 PathProgramCache]: Analyzing trace with hash 125536076, now seen corresponding path program 1 times [2021-11-17 03:00:31,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:00:31,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143989418] [2021-11-17 03:00:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:00:31,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:00:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:00:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:00:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:00:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:00:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 03:00:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 03:00:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 03:00:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 03:00:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-17 03:00:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-17 03:00:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 03:00:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-11-17 03:00:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-17 03:00:31,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:00:31,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143989418] [2021-11-17 03:00:31,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143989418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:00:31,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:00:31,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 03:00:31,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443881882] [2021-11-17 03:00:31,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:00:31,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:00:31,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:00:31,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:00:31,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 03:00:31,956 INFO L87 Difference]: Start difference. First operand 35240 states and 49590 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-17 03:00:34,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:36,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:38,498 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:40,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:43,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:00:48,337 INFO L93 Difference]: Finished difference Result 94432 states and 134005 transitions. [2021-11-17 03:00:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-17 03:00:48,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 220 [2021-11-17 03:00:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:00:48,572 INFO L225 Difference]: With dead ends: 94432 [2021-11-17 03:00:48,572 INFO L226 Difference]: Without dead ends: 59204 [2021-11-17 03:00:48,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-17 03:00:48,678 INFO L933 BasicCegarLoop]: 1836 mSDtfsCounter, 3059 mSDsluCounter, 5192 mSDsCounter, 0 mSdLazyCounter, 2519 mSolverCounterSat, 1442 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3224 SdHoareTripleChecker+Valid, 7028 SdHoareTripleChecker+Invalid, 3966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1442 IncrementalHoareTripleChecker+Valid, 2519 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-11-17 03:00:48,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3224 Valid, 7028 Invalid, 3966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1442 Valid, 2519 Invalid, 5 Unknown, 0 Unchecked, 15.1s Time] [2021-11-17 03:00:48,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59204 states. [2021-11-17 03:00:50,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59204 to 52236. [2021-11-17 03:00:50,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52236 states, 39399 states have (on average 1.333739435011041) internal successors, (52548), 39808 states have internal predecessors, (52548), 10002 states have call successors, (10002), 2677 states have call predecessors, (10002), 2834 states have return successors, (10902), 10082 states have call predecessors, (10902), 10000 states have call successors, (10902) [2021-11-17 03:00:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52236 states to 52236 states and 73452 transitions. [2021-11-17 03:00:50,763 INFO L78 Accepts]: Start accepts. Automaton has 52236 states and 73452 transitions. Word has length 220 [2021-11-17 03:00:50,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:00:50,764 INFO L470 AbstractCegarLoop]: Abstraction has 52236 states and 73452 transitions. [2021-11-17 03:00:50,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-17 03:00:50,764 INFO L276 IsEmpty]: Start isEmpty. Operand 52236 states and 73452 transitions. [2021-11-17 03:00:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-17 03:00:50,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:00:50,782 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:00:50,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 03:00:50,782 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:00:50,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:00:50,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1156406266, now seen corresponding path program 1 times [2021-11-17 03:00:50,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:00:50,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882889074] [2021-11-17 03:00:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:00:50,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:00:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:00:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:00:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:00:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:00:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 03:00:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 03:00:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 03:00:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 03:00:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-17 03:00:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:00:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:00:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-17 03:00:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 03:00:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-17 03:00:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-11-17 03:00:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:00:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-17 03:00:51,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:00:51,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882889074] [2021-11-17 03:00:51,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882889074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:00:51,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:00:51,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-17 03:00:51,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967801543] [2021-11-17 03:00:51,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:00:51,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 03:00:51,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:00:51,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 03:00:51,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-17 03:00:51,798 INFO L87 Difference]: Start difference. First operand 52236 states and 73452 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (19), 7 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-17 03:00:53,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:56,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:00:58,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:00,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:08,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:01:08,852 INFO L93 Difference]: Finished difference Result 132808 states and 188152 transitions. [2021-11-17 03:01:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-17 03:01:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (19), 7 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 227 [2021-11-17 03:01:08,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:01:09,191 INFO L225 Difference]: With dead ends: 132808 [2021-11-17 03:01:09,191 INFO L226 Difference]: Without dead ends: 80584 [2021-11-17 03:01:09,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2021-11-17 03:01:09,329 INFO L933 BasicCegarLoop]: 2278 mSDtfsCounter, 3090 mSDsluCounter, 10473 mSDsCounter, 0 mSdLazyCounter, 4525 mSolverCounterSat, 2105 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3257 SdHoareTripleChecker+Valid, 12751 SdHoareTripleChecker+Invalid, 6634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2105 IncrementalHoareTripleChecker+Valid, 4525 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2021-11-17 03:01:09,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3257 Valid, 12751 Invalid, 6634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2105 Valid, 4525 Invalid, 4 Unknown, 0 Unchecked, 14.6s Time] [2021-11-17 03:01:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80584 states. [2021-11-17 03:01:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80584 to 52420. [2021-11-17 03:01:11,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52420 states, 39535 states have (on average 1.3325913747312508) internal successors, (52684), 39968 states have internal predecessors, (52684), 10026 states have call successors, (10026), 2677 states have call predecessors, (10026), 2858 states have return successors, (10958), 10130 states have call predecessors, (10958), 10024 states have call successors, (10958) [2021-11-17 03:01:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52420 states to 52420 states and 73668 transitions. [2021-11-17 03:01:11,549 INFO L78 Accepts]: Start accepts. Automaton has 52420 states and 73668 transitions. Word has length 227 [2021-11-17 03:01:11,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:01:11,550 INFO L470 AbstractCegarLoop]: Abstraction has 52420 states and 73668 transitions. [2021-11-17 03:01:11,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (19), 7 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-17 03:01:11,551 INFO L276 IsEmpty]: Start isEmpty. Operand 52420 states and 73668 transitions. [2021-11-17 03:01:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-17 03:01:11,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:01:11,568 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:01:11,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-17 03:01:11,569 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:01:11,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:01:11,569 INFO L85 PathProgramCache]: Analyzing trace with hash -170075566, now seen corresponding path program 1 times [2021-11-17 03:01:11,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:01:11,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095835331] [2021-11-17 03:01:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:01:11,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:01:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:01:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:01:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:01:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:01:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 03:01:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 03:01:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 03:01:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 03:01:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-17 03:01:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 03:01:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-17 03:01:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-11-17 03:01:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-11-17 03:01:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-17 03:01:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 03:01:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-17 03:01:12,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:01:12,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095835331] [2021-11-17 03:01:12,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095835331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:01:12,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:01:12,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 03:01:12,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503392261] [2021-11-17 03:01:12,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:01:12,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 03:01:12,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:01:12,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 03:01:12,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-17 03:01:12,417 INFO L87 Difference]: Start difference. First operand 52420 states and 73668 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (21), 8 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-17 03:01:14,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:17,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:19,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:22,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:01:22,196 INFO L93 Difference]: Finished difference Result 99798 states and 139516 transitions. [2021-11-17 03:01:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 03:01:22,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (21), 8 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 258 [2021-11-17 03:01:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:01:22,372 INFO L225 Difference]: With dead ends: 99798 [2021-11-17 03:01:22,372 INFO L226 Difference]: Without dead ends: 47390 [2021-11-17 03:01:22,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-17 03:01:22,526 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 1838 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 1023 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1921 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1023 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-17 03:01:22,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1921 Valid, 2972 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1023 Valid, 678 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2021-11-17 03:01:22,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47390 states. [2021-11-17 03:01:23,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47390 to 44230. [2021-11-17 03:01:23,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44230 states, 33509 states have (on average 1.3280611179086215) internal successors, (44502), 33744 states have internal predecessors, (44502), 8266 states have call successors, (8266), 2317 states have call predecessors, (8266), 2454 states have return successors, (8572), 8272 states have call predecessors, (8572), 8264 states have call successors, (8572) [2021-11-17 03:01:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44230 states to 44230 states and 61340 transitions. [2021-11-17 03:01:24,068 INFO L78 Accepts]: Start accepts. Automaton has 44230 states and 61340 transitions. Word has length 258 [2021-11-17 03:01:24,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:01:24,068 INFO L470 AbstractCegarLoop]: Abstraction has 44230 states and 61340 transitions. [2021-11-17 03:01:24,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (21), 8 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-17 03:01:24,069 INFO L276 IsEmpty]: Start isEmpty. Operand 44230 states and 61340 transitions. [2021-11-17 03:01:24,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-17 03:01:24,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:01:24,099 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:01:24,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-17 03:01:24,099 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:01:24,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:01:24,100 INFO L85 PathProgramCache]: Analyzing trace with hash 362052746, now seen corresponding path program 1 times [2021-11-17 03:01:24,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:01:24,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103101950] [2021-11-17 03:01:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:01:24,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:01:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:01:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:01:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:01:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:01:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 03:01:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 03:01:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 03:01:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 03:01:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-17 03:01:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 03:01:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-17 03:01:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-11-17 03:01:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-11-17 03:01:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-11-17 03:01:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-17 03:01:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-11-17 03:01:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-17 03:01:24,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:01:24,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103101950] [2021-11-17 03:01:24,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103101950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:01:24,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:01:24,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 03:01:24,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371838089] [2021-11-17 03:01:24,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:01:24,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 03:01:24,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:01:24,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 03:01:24,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-17 03:01:24,982 INFO L87 Difference]: Start difference. First operand 44230 states and 61340 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 03:01:27,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:29,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:31,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:34,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:37,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:01:37,466 INFO L93 Difference]: Finished difference Result 91644 states and 127224 transitions. [2021-11-17 03:01:37,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 03:01:37,466 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 268 [2021-11-17 03:01:37,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:01:37,593 INFO L225 Difference]: With dead ends: 91644 [2021-11-17 03:01:37,593 INFO L226 Difference]: Without dead ends: 47426 [2021-11-17 03:01:37,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-17 03:01:37,682 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 896 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 691 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 3743 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-17 03:01:37,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 3743 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 1084 Invalid, 4 Unknown, 0 Unchecked, 11.2s Time] [2021-11-17 03:01:37,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47426 states. [2021-11-17 03:01:38,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47426 to 44266. [2021-11-17 03:01:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44266 states, 33545 states have (on average 1.3277090475480697) internal successors, (44538), 33780 states have internal predecessors, (44538), 8266 states have call successors, (8266), 2317 states have call predecessors, (8266), 2454 states have return successors, (8572), 8272 states have call predecessors, (8572), 8264 states have call successors, (8572) [2021-11-17 03:01:38,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44266 states to 44266 states and 61376 transitions. [2021-11-17 03:01:38,991 INFO L78 Accepts]: Start accepts. Automaton has 44266 states and 61376 transitions. Word has length 268 [2021-11-17 03:01:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:01:38,992 INFO L470 AbstractCegarLoop]: Abstraction has 44266 states and 61376 transitions. [2021-11-17 03:01:38,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 03:01:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 44266 states and 61376 transitions. [2021-11-17 03:01:39,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-17 03:01:39,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:01:39,017 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:01:39,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-17 03:01:39,017 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:01:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:01:39,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1483314420, now seen corresponding path program 1 times [2021-11-17 03:01:39,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:01:39,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537271017] [2021-11-17 03:01:39,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:01:39,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:01:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:01:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:01:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:01:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:01:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 03:01:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 03:01:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 03:01:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 03:01:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-17 03:01:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 03:01:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-17 03:01:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-11-17 03:01:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:39,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:40,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-11-17 03:01:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-11-17 03:01:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-17 03:01:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:40,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-11-17 03:01:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-17 03:01:40,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:01:40,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537271017] [2021-11-17 03:01:40,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537271017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:01:40,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:01:40,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-17 03:01:40,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207510649] [2021-11-17 03:01:40,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:01:40,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 03:01:40,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:01:40,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 03:01:40,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-17 03:01:40,120 INFO L87 Difference]: Start difference. First operand 44266 states and 61376 transitions. Second operand has 11 states, 10 states have (on average 10.3) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 03:01:42,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:44,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:46,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:49,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:52,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:01:52,948 INFO L93 Difference]: Finished difference Result 91680 states and 127152 transitions. [2021-11-17 03:01:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 03:01:52,949 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 268 [2021-11-17 03:01:52,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:01:53,093 INFO L225 Difference]: With dead ends: 91680 [2021-11-17 03:01:53,093 INFO L226 Difference]: Without dead ends: 47066 [2021-11-17 03:01:53,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-17 03:01:53,378 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 1013 mSDsluCounter, 5002 mSDsCounter, 0 mSdLazyCounter, 1979 mSolverCounterSat, 833 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 5921 SdHoareTripleChecker+Invalid, 2816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 833 IncrementalHoareTripleChecker+Valid, 1979 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-17 03:01:53,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 5921 Invalid, 2816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [833 Valid, 1979 Invalid, 4 Unknown, 0 Unchecked, 11.6s Time] [2021-11-17 03:01:53,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47066 states. [2021-11-17 03:01:54,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47066 to 44338. [2021-11-17 03:01:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44338 states, 33617 states have (on average 1.3270071689918792) internal successors, (44610), 33852 states have internal predecessors, (44610), 8266 states have call successors, (8266), 2317 states have call predecessors, (8266), 2454 states have return successors, (8572), 8272 states have call predecessors, (8572), 8264 states have call successors, (8572) [2021-11-17 03:01:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44338 states to 44338 states and 61448 transitions. [2021-11-17 03:01:54,683 INFO L78 Accepts]: Start accepts. Automaton has 44338 states and 61448 transitions. Word has length 268 [2021-11-17 03:01:54,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:01:54,684 INFO L470 AbstractCegarLoop]: Abstraction has 44338 states and 61448 transitions. [2021-11-17 03:01:54,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 03:01:54,684 INFO L276 IsEmpty]: Start isEmpty. Operand 44338 states and 61448 transitions. [2021-11-17 03:01:54,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-17 03:01:54,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:01:54,706 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:01:54,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-17 03:01:54,706 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:01:54,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:01:54,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1495781324, now seen corresponding path program 1 times [2021-11-17 03:01:54,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:01:54,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509931137] [2021-11-17 03:01:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:01:54,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:01:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:01:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:01:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:01:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:01:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 03:01:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 03:01:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 03:01:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 03:01:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-17 03:01:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:01:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:01:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 03:01:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-11-17 03:01:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 03:01:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 03:01:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:01:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-17 03:01:55,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:01:55,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509931137] [2021-11-17 03:01:55,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509931137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:01:55,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:01:55,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-17 03:01:55,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163218819] [2021-11-17 03:01:55,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:01:55,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 03:01:55,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:01:55,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 03:01:55,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-17 03:01:55,416 INFO L87 Difference]: Start difference. First operand 44338 states and 61448 transitions. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (19), 7 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-17 03:01:57,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:01:59,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:02:02,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:02:04,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:02:06,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:02:12,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:02:12,536 INFO L93 Difference]: Finished difference Result 108522 states and 150088 transitions. [2021-11-17 03:02:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-17 03:02:12,536 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (19), 7 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 251 [2021-11-17 03:02:12,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:02:12,704 INFO L225 Difference]: With dead ends: 108522 [2021-11-17 03:02:12,704 INFO L226 Difference]: Without dead ends: 64196 [2021-11-17 03:02:12,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2021-11-17 03:02:12,794 INFO L933 BasicCegarLoop]: 1830 mSDtfsCounter, 1590 mSDsluCounter, 9335 mSDsCounter, 0 mSdLazyCounter, 3695 mSolverCounterSat, 831 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 11165 SdHoareTripleChecker+Invalid, 4531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 3695 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-11-17 03:02:12,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1698 Valid, 11165 Invalid, 4531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 3695 Invalid, 5 Unknown, 0 Unchecked, 15.4s Time] [2021-11-17 03:02:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64196 states. [2021-11-17 03:02:14,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64196 to 44450. [2021-11-17 03:02:14,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44450 states, 33697 states have (on average 1.3262308217348726) internal successors, (44690), 33940 states have internal predecessors, (44690), 8282 states have call successors, (8282), 2317 states have call predecessors, (8282), 2470 states have return successors, (8604), 8312 states have call predecessors, (8604), 8280 states have call successors, (8604) [2021-11-17 03:02:14,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44450 states to 44450 states and 61576 transitions. [2021-11-17 03:02:14,401 INFO L78 Accepts]: Start accepts. Automaton has 44450 states and 61576 transitions. Word has length 251 [2021-11-17 03:02:14,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:02:14,402 INFO L470 AbstractCegarLoop]: Abstraction has 44450 states and 61576 transitions. [2021-11-17 03:02:14,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (19), 7 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-17 03:02:14,402 INFO L276 IsEmpty]: Start isEmpty. Operand 44450 states and 61576 transitions. [2021-11-17 03:02:14,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-17 03:02:14,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:02:14,415 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:02:14,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-17 03:02:14,415 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:02:14,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:02:14,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2128051010, now seen corresponding path program 1 times [2021-11-17 03:02:14,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:02:14,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893569250] [2021-11-17 03:02:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:02:14,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:02:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:02:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:02:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:02:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:02:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 03:02:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 03:02:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 03:02:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 03:02:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-17 03:02:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-17 03:02:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 03:02:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:02:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:02:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-17 03:02:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-11-17 03:02:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-17 03:02:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-17 03:02:14,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:02:14,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893569250] [2021-11-17 03:02:14,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893569250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:02:14,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:02:14,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 03:02:14,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572971822] [2021-11-17 03:02:14,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:02:14,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 03:02:14,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:02:14,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 03:02:14,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-17 03:02:14,952 INFO L87 Difference]: Start difference. First operand 44450 states and 61576 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:02:17,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:02:19,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:02:21,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:02:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:02:24,590 INFO L93 Difference]: Finished difference Result 91744 states and 127380 transitions. [2021-11-17 03:02:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 03:02:24,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 254 [2021-11-17 03:02:24,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:02:24,730 INFO L225 Difference]: With dead ends: 91744 [2021-11-17 03:02:24,730 INFO L226 Difference]: Without dead ends: 47306 [2021-11-17 03:02:24,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-17 03:02:24,818 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 805 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 647 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 3253 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-17 03:02:24,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 3253 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 869 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2021-11-17 03:02:24,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47306 states. [2021-11-17 03:02:26,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47306 to 44514. [2021-11-17 03:02:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44514 states, 33761 states have (on average 1.3256123929978378) internal successors, (44754), 34004 states have internal predecessors, (44754), 8282 states have call successors, (8282), 2317 states have call predecessors, (8282), 2470 states have return successors, (8604), 8312 states have call predecessors, (8604), 8280 states have call successors, (8604) [2021-11-17 03:02:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44514 states to 44514 states and 61640 transitions. [2021-11-17 03:02:26,293 INFO L78 Accepts]: Start accepts. Automaton has 44514 states and 61640 transitions. Word has length 254 [2021-11-17 03:02:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:02:26,294 INFO L470 AbstractCegarLoop]: Abstraction has 44514 states and 61640 transitions. [2021-11-17 03:02:26,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:02:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 44514 states and 61640 transitions. [2021-11-17 03:02:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-17 03:02:26,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:02:26,307 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:02:26,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-17 03:02:26,307 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:02:26,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:02:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2139850684, now seen corresponding path program 1 times [2021-11-17 03:02:26,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:02:26,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968336420] [2021-11-17 03:02:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:02:26,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:02:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:02:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:02:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:02:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:02:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 03:02:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 03:02:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 03:02:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 03:02:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-17 03:02:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-17 03:02:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 03:02:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:02:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:02:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-17 03:02:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-11-17 03:02:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-17 03:02:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-17 03:02:27,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:02:27,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968336420] [2021-11-17 03:02:27,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968336420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:02:27,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:02:27,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-17 03:02:27,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035543063] [2021-11-17 03:02:27,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:02:27,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-17 03:02:27,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:02:27,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-17 03:02:27,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-17 03:02:27,222 INFO L87 Difference]: Start difference. First operand 44514 states and 61640 transitions. Second operand has 12 states, 12 states have (on average 9.75) internal successors, (117), 6 states have internal predecessors, (117), 2 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:02:29,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:02:31,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:02:34,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:02:37,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:02:37,857 INFO L93 Difference]: Finished difference Result 92576 states and 128108 transitions. [2021-11-17 03:02:37,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-17 03:02:37,858 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 6 states have internal predecessors, (117), 2 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 254 [2021-11-17 03:02:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:02:37,972 INFO L225 Difference]: With dead ends: 92576 [2021-11-17 03:02:37,972 INFO L226 Difference]: Without dead ends: 48074 [2021-11-17 03:02:38,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2021-11-17 03:02:38,188 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 1058 mSDsluCounter, 5358 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 880 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 6298 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-17 03:02:38,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 6298 Invalid, 2983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [880 Valid, 2100 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2021-11-17 03:02:38,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48074 states. [2021-11-17 03:02:39,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48074 to 44754. [2021-11-17 03:02:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44754 states, 33961 states have (on average 1.3236948264185389) internal successors, (44954), 34204 states have internal predecessors, (44954), 8282 states have call successors, (8282), 2317 states have call predecessors, (8282), 2510 states have return successors, (8708), 8352 states have call predecessors, (8708), 8280 states have call successors, (8708) [2021-11-17 03:02:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44754 states to 44754 states and 61944 transitions. [2021-11-17 03:02:39,523 INFO L78 Accepts]: Start accepts. Automaton has 44754 states and 61944 transitions. Word has length 254 [2021-11-17 03:02:39,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:02:39,524 INFO L470 AbstractCegarLoop]: Abstraction has 44754 states and 61944 transitions. [2021-11-17 03:02:39,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 6 states have internal predecessors, (117), 2 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:02:39,525 INFO L276 IsEmpty]: Start isEmpty. Operand 44754 states and 61944 transitions. [2021-11-17 03:02:39,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-17 03:02:39,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:02:39,538 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:02:39,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-17 03:02:39,539 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:02:39,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:02:39,539 INFO L85 PathProgramCache]: Analyzing trace with hash -158518074, now seen corresponding path program 1 times [2021-11-17 03:02:39,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:02:39,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021508189] [2021-11-17 03:02:39,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:02:39,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:02:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:02:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:02:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:02:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:02:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 03:02:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 03:02:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 03:02:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 03:02:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-17 03:02:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 03:02:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-17 03:02:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-11-17 03:02:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 03:02:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-11-17 03:02:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-11-17 03:02:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-11-17 03:02:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-17 03:02:40,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:02:40,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021508189] [2021-11-17 03:02:40,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021508189] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 03:02:40,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728986287] [2021-11-17 03:02:40,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:02:40,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:02:40,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:02:40,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 03:02:40,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 03:02:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:42,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 6802 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-17 03:02:42,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 03:02:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-17 03:02:42,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 03:02:42,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728986287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:02:42,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 03:02:42,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-11-17 03:02:42,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134531333] [2021-11-17 03:02:42,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:02:42,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 03:02:42,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:02:42,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 03:02:42,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-17 03:02:42,663 INFO L87 Difference]: Start difference. First operand 44754 states and 61944 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 03:02:44,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:02:45,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:02:45,820 INFO L93 Difference]: Finished difference Result 68039 states and 94225 transitions. [2021-11-17 03:02:45,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 03:02:45,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 269 [2021-11-17 03:02:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:02:45,874 INFO L225 Difference]: With dead ends: 68039 [2021-11-17 03:02:45,874 INFO L226 Difference]: Without dead ends: 23189 [2021-11-17 03:02:45,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-17 03:02:45,939 INFO L933 BasicCegarLoop]: 1031 mSDtfsCounter, 21 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-17 03:02:45,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 4111 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-17 03:02:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23189 states. [2021-11-17 03:02:46,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23189 to 23078. [2021-11-17 03:02:46,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23078 states, 17493 states have (on average 1.3226433430515063) internal successors, (23137), 17632 states have internal predecessors, (23137), 4302 states have call successors, (4302), 1186 states have call predecessors, (4302), 1282 states have return successors, (4514), 4319 states have call predecessors, (4514), 4300 states have call successors, (4514) [2021-11-17 03:02:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23078 states to 23078 states and 31953 transitions. [2021-11-17 03:02:46,606 INFO L78 Accepts]: Start accepts. Automaton has 23078 states and 31953 transitions. Word has length 269 [2021-11-17 03:02:46,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:02:46,606 INFO L470 AbstractCegarLoop]: Abstraction has 23078 states and 31953 transitions. [2021-11-17 03:02:46,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 03:02:46,607 INFO L276 IsEmpty]: Start isEmpty. Operand 23078 states and 31953 transitions. [2021-11-17 03:02:46,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-17 03:02:46,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:02:46,617 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:02:46,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-17 03:02:46,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-17 03:02:46,832 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:02:46,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:02:46,832 INFO L85 PathProgramCache]: Analyzing trace with hash -753988565, now seen corresponding path program 1 times [2021-11-17 03:02:46,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:02:46,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901350915] [2021-11-17 03:02:46,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:02:46,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:02:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:02:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:02:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:02:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:02:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:02:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:02:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:02:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:47,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:02:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:02:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 03:02:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 03:02:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:02:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-17 03:02:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:02:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-11-17 03:02:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-17 03:02:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-17 03:02:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-11-17 03:02:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-17 03:02:48,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:02:48,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901350915] [2021-11-17 03:02:48,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901350915] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 03:02:48,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944686277] [2021-11-17 03:02:48,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:02:48,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:02:48,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:02:48,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 03:02:48,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 03:02:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:02:58,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 6819 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-17 03:02:58,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 03:02:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-17 03:02:58,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 03:02:58,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944686277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:02:58,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 03:02:58,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2021-11-17 03:02:58,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435695884] [2021-11-17 03:02:58,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:02:58,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:02:58,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:02:58,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:02:58,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-11-17 03:02:58,955 INFO L87 Difference]: Start difference. First operand 23078 states and 31953 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 03:02:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:02:59,589 INFO L93 Difference]: Finished difference Result 45854 states and 63481 transitions. [2021-11-17 03:02:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 03:02:59,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 271 [2021-11-17 03:02:59,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:02:59,636 INFO L225 Difference]: With dead ends: 45854 [2021-11-17 03:02:59,637 INFO L226 Difference]: Without dead ends: 23222 [2021-11-17 03:02:59,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-17 03:02:59,672 INFO L933 BasicCegarLoop]: 1050 mSDtfsCounter, 33 mSDsluCounter, 4158 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5208 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 03:02:59,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 5208 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 03:02:59,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23222 states. [2021-11-17 03:03:00,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23222 to 23070. [2021-11-17 03:03:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23070 states, 17489 states have (on average 1.3216879181199612) internal successors, (23115), 17624 states have internal predecessors, (23115), 4302 states have call successors, (4302), 1186 states have call predecessors, (4302), 1278 states have return successors, (4506), 4319 states have call predecessors, (4506), 4300 states have call successors, (4506) [2021-11-17 03:03:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23070 states to 23070 states and 31923 transitions. [2021-11-17 03:03:00,334 INFO L78 Accepts]: Start accepts. Automaton has 23070 states and 31923 transitions. Word has length 271 [2021-11-17 03:03:00,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:03:00,334 INFO L470 AbstractCegarLoop]: Abstraction has 23070 states and 31923 transitions. [2021-11-17 03:03:00,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 03:03:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 23070 states and 31923 transitions. [2021-11-17 03:03:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-17 03:03:00,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:03:00,345 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:03:00,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-17 03:03:00,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-17 03:03:00,560 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:03:00,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:03:00,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1571637015, now seen corresponding path program 1 times [2021-11-17 03:03:00,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:03:00,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694320421] [2021-11-17 03:03:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:03:00,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:03:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:03:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:03:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:03:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:03:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:03:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:03:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:03:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:00,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:03:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:03:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 03:03:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 03:03:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-17 03:03:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-11-17 03:03:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-17 03:03:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-17 03:03:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-11-17 03:03:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2021-11-17 03:03:01,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:03:01,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694320421] [2021-11-17 03:03:01,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694320421] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 03:03:01,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266712992] [2021-11-17 03:03:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:03:01,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:03:01,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:03:01,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 03:03:01,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 03:03:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:02,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 6820 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 03:03:02,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 03:03:02,766 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-17 03:03:02,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 03:03:02,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266712992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:03:02,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 03:03:02,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-17 03:03:02,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617711819] [2021-11-17 03:03:02,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:03:02,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 03:03:02,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:03:02,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 03:03:02,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-17 03:03:02,769 INFO L87 Difference]: Start difference. First operand 23070 states and 31923 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 03:03:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:03:03,202 INFO L93 Difference]: Finished difference Result 45648 states and 63176 transitions. [2021-11-17 03:03:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 03:03:03,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 271 [2021-11-17 03:03:03,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:03:03,261 INFO L225 Difference]: With dead ends: 45648 [2021-11-17 03:03:03,261 INFO L226 Difference]: Without dead ends: 23024 [2021-11-17 03:03:03,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-17 03:03:03,429 INFO L933 BasicCegarLoop]: 1038 mSDtfsCounter, 7 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 03:03:03,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 2065 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 03:03:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23024 states. [2021-11-17 03:03:03,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23024 to 22871. [2021-11-17 03:03:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22871 states, 17370 states have (on average 1.3215889464594128) internal successors, (22956), 17505 states have internal predecessors, (22956), 4230 states have call successors, (4230), 1178 states have call predecessors, (4230), 1270 states have return successors, (4429), 4247 states have call predecessors, (4429), 4228 states have call successors, (4429) [2021-11-17 03:03:03,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22871 states to 22871 states and 31615 transitions. [2021-11-17 03:03:03,992 INFO L78 Accepts]: Start accepts. Automaton has 22871 states and 31615 transitions. Word has length 271 [2021-11-17 03:03:03,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:03:03,992 INFO L470 AbstractCegarLoop]: Abstraction has 22871 states and 31615 transitions. [2021-11-17 03:03:03,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 03:03:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 22871 states and 31615 transitions. [2021-11-17 03:03:04,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-17 03:03:04,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:03:04,000 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:03:04,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-17 03:03:04,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-17 03:03:04,202 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:03:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:03:04,202 INFO L85 PathProgramCache]: Analyzing trace with hash 665750083, now seen corresponding path program 1 times [2021-11-17 03:03:04,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:03:04,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487204138] [2021-11-17 03:03:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:03:04,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:03:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:03:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:03:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:03:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:03:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:03:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:03:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:03:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:03:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:03:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 03:03:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 03:03:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:03:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:03:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 03:03:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-17 03:03:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 03:03:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-17 03:03:04,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:03:04,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487204138] [2021-11-17 03:03:04,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487204138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:03:04,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:03:04,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-17 03:03:04,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471630972] [2021-11-17 03:03:04,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:03:04,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-17 03:03:04,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:03:04,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-17 03:03:04,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-17 03:03:04,950 INFO L87 Difference]: Start difference. First operand 22871 states and 31615 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 6 states have internal predecessors, (121), 2 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:03:07,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:03:09,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:03:13,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:03:13,259 INFO L93 Difference]: Finished difference Result 47180 states and 65163 transitions. [2021-11-17 03:03:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-17 03:03:13,259 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 6 states have internal predecessors, (121), 2 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 258 [2021-11-17 03:03:13,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:03:13,329 INFO L225 Difference]: With dead ends: 47180 [2021-11-17 03:03:13,329 INFO L226 Difference]: Without dead ends: 24755 [2021-11-17 03:03:13,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2021-11-17 03:03:13,392 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 1061 mSDsluCounter, 5311 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 869 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 6237 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-17 03:03:13,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 6237 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2059 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2021-11-17 03:03:13,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24755 states. [2021-11-17 03:03:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24755 to 22871. [2021-11-17 03:03:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22871 states, 17370 states have (on average 1.3215889464594128) internal successors, (22956), 17505 states have internal predecessors, (22956), 4230 states have call successors, (4230), 1178 states have call predecessors, (4230), 1270 states have return successors, (4429), 4247 states have call predecessors, (4429), 4228 states have call successors, (4429) [2021-11-17 03:03:14,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22871 states to 22871 states and 31615 transitions. [2021-11-17 03:03:14,180 INFO L78 Accepts]: Start accepts. Automaton has 22871 states and 31615 transitions. Word has length 258 [2021-11-17 03:03:14,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:03:14,180 INFO L470 AbstractCegarLoop]: Abstraction has 22871 states and 31615 transitions. [2021-11-17 03:03:14,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 6 states have internal predecessors, (121), 2 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:03:14,181 INFO L276 IsEmpty]: Start isEmpty. Operand 22871 states and 31615 transitions. [2021-11-17 03:03:14,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-17 03:03:14,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:03:14,191 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:03:14,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-17 03:03:14,192 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:03:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:03:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash -500946236, now seen corresponding path program 1 times [2021-11-17 03:03:14,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:03:14,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480606384] [2021-11-17 03:03:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:03:14,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:03:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:03:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:03:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:03:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:03:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:03:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:03:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:03:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:03:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:03:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 03:03:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 03:03:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 03:03:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:03:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 03:03:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-17 03:03:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 03:03:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-17 03:03:14,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:03:14,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480606384] [2021-11-17 03:03:14,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480606384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:03:14,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:03:14,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 03:03:14,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181289929] [2021-11-17 03:03:14,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:03:14,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 03:03:14,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:03:14,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 03:03:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-17 03:03:14,874 INFO L87 Difference]: Start difference. First operand 22871 states and 31615 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-17 03:03:16,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:03:19,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:03:22,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:03:22,418 INFO L93 Difference]: Finished difference Result 47040 states and 64983 transitions. [2021-11-17 03:03:22,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 03:03:22,419 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 258 [2021-11-17 03:03:22,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:03:22,492 INFO L225 Difference]: With dead ends: 47040 [2021-11-17 03:03:22,492 INFO L226 Difference]: Without dead ends: 24615 [2021-11-17 03:03:22,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-17 03:03:22,545 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 970 mSDsluCounter, 3852 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 811 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 4802 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 811 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-17 03:03:22,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [994 Valid, 4802 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [811 Valid, 1572 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2021-11-17 03:03:22,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24615 states. [2021-11-17 03:03:23,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24615 to 22991. [2021-11-17 03:03:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22991 states, 17450 states have (on average 1.3201146131805157) internal successors, (23036), 17585 states have internal predecessors, (23036), 4250 states have call successors, (4250), 1178 states have call predecessors, (4250), 1290 states have return successors, (4489), 4287 states have call predecessors, (4489), 4248 states have call successors, (4489) [2021-11-17 03:03:23,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22991 states to 22991 states and 31775 transitions. [2021-11-17 03:03:23,378 INFO L78 Accepts]: Start accepts. Automaton has 22991 states and 31775 transitions. Word has length 258 [2021-11-17 03:03:23,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:03:23,379 INFO L470 AbstractCegarLoop]: Abstraction has 22991 states and 31775 transitions. [2021-11-17 03:03:23,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-17 03:03:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 22991 states and 31775 transitions. [2021-11-17 03:03:23,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-17 03:03:23,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:03:23,388 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:03:23,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-17 03:03:23,388 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:03:23,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:03:23,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1625473913, now seen corresponding path program 1 times [2021-11-17 03:03:23,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:03:23,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934453759] [2021-11-17 03:03:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:03:23,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:03:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:03:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:03:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:03:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:03:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:03:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:03:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:23,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:03:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:03:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:03:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 03:03:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 03:03:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-17 03:03:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-11-17 03:03:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-17 03:03:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-17 03:03:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-11-17 03:03:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-17 03:03:24,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:03:24,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934453759] [2021-11-17 03:03:24,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934453759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:03:24,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:03:24,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 03:03:24,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846578559] [2021-11-17 03:03:24,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:03:24,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 03:03:24,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:03:24,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 03:03:24,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-17 03:03:24,368 INFO L87 Difference]: Start difference. First operand 22991 states and 31775 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 6 states have internal predecessors, (108), 4 states have call successors, (22), 9 states have call predecessors, (22), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 03:03:26,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:03:28,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:03:31,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:03:33,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:03:35,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:03:42,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:03:42,709 INFO L93 Difference]: Finished difference Result 36931 states and 50987 transitions. [2021-11-17 03:03:42,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-17 03:03:42,710 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 6 states have internal predecessors, (108), 4 states have call successors, (22), 9 states have call predecessors, (22), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 273 [2021-11-17 03:03:42,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:03:42,802 INFO L225 Difference]: With dead ends: 36931 [2021-11-17 03:03:42,802 INFO L226 Difference]: Without dead ends: 36928 [2021-11-17 03:03:42,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2021-11-17 03:03:42,822 INFO L933 BasicCegarLoop]: 1783 mSDtfsCounter, 3850 mSDsluCounter, 6894 mSDsCounter, 0 mSdLazyCounter, 5582 mSolverCounterSat, 2126 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4023 SdHoareTripleChecker+Valid, 8677 SdHoareTripleChecker+Invalid, 7713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2126 IncrementalHoareTripleChecker+Valid, 5582 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2021-11-17 03:03:42,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4023 Valid, 8677 Invalid, 7713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2126 Valid, 5582 Invalid, 5 Unknown, 0 Unchecked, 17.3s Time] [2021-11-17 03:03:42,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36928 states. [2021-11-17 03:03:43,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36928 to 34374. [2021-11-17 03:03:43,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34374 states, 26092 states have (on average 1.3208646328376514) internal successors, (34464), 26286 states have internal predecessors, (34464), 6336 states have call successors, (6336), 1761 states have call predecessors, (6336), 1945 states have return successors, (6763), 6416 states have call predecessors, (6763), 6334 states have call successors, (6763) [2021-11-17 03:03:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34374 states to 34374 states and 47563 transitions. [2021-11-17 03:03:43,848 INFO L78 Accepts]: Start accepts. Automaton has 34374 states and 47563 transitions. Word has length 273 [2021-11-17 03:03:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:03:43,848 INFO L470 AbstractCegarLoop]: Abstraction has 34374 states and 47563 transitions. [2021-11-17 03:03:43,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 6 states have internal predecessors, (108), 4 states have call successors, (22), 9 states have call predecessors, (22), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 03:03:43,848 INFO L276 IsEmpty]: Start isEmpty. Operand 34374 states and 47563 transitions. [2021-11-17 03:03:43,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-17 03:03:43,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:03:43,856 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:03:43,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-17 03:03:43,856 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:03:43,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:03:43,856 INFO L85 PathProgramCache]: Analyzing trace with hash 231927165, now seen corresponding path program 1 times [2021-11-17 03:03:43,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:03:43,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345639865] [2021-11-17 03:03:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:03:43,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:03:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:03:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:03:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:03:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:03:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:03:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:03:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:03:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:03:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:03:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 03:03:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 03:03:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 03:03:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-17 03:03:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-11-17 03:03:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-17 03:03:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-11-17 03:03:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-17 03:03:44,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:03:44,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345639865] [2021-11-17 03:03:44,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345639865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:03:44,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:03:44,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 03:03:44,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538011973] [2021-11-17 03:03:44,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:03:44,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 03:03:44,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:03:44,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 03:03:44,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-17 03:03:44,353 INFO L87 Difference]: Start difference. First operand 34374 states and 47563 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:03:46,583 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:03:49,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:03:51,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:03:54,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:03:54,168 INFO L93 Difference]: Finished difference Result 70890 states and 98277 transitions. [2021-11-17 03:03:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 03:03:54,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 267 [2021-11-17 03:03:54,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:03:54,263 INFO L225 Difference]: With dead ends: 70890 [2021-11-17 03:03:54,263 INFO L226 Difference]: Without dead ends: 36962 [2021-11-17 03:03:54,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-17 03:03:54,529 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 946 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 790 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-17 03:03:54,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [970 Valid, 3283 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 899 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2021-11-17 03:03:54,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36962 states. [2021-11-17 03:03:55,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36962 to 34422. [2021-11-17 03:03:55,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34422 states, 26140 states have (on average 1.320275439938791) internal successors, (34512), 26334 states have internal predecessors, (34512), 6336 states have call successors, (6336), 1761 states have call predecessors, (6336), 1945 states have return successors, (6763), 6416 states have call predecessors, (6763), 6334 states have call successors, (6763) [2021-11-17 03:03:55,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34422 states to 34422 states and 47611 transitions. [2021-11-17 03:03:55,591 INFO L78 Accepts]: Start accepts. Automaton has 34422 states and 47611 transitions. Word has length 267 [2021-11-17 03:03:55,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:03:55,591 INFO L470 AbstractCegarLoop]: Abstraction has 34422 states and 47611 transitions. [2021-11-17 03:03:55,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:03:55,592 INFO L276 IsEmpty]: Start isEmpty. Operand 34422 states and 47611 transitions. [2021-11-17 03:03:55,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-17 03:03:55,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:03:55,599 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:03:55,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-17 03:03:55,600 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:03:55,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:03:55,600 INFO L85 PathProgramCache]: Analyzing trace with hash -295210184, now seen corresponding path program 1 times [2021-11-17 03:03:55,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:03:55,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319200787] [2021-11-17 03:03:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:03:55,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:03:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:03:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:03:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:03:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:03:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:03:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:03:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:03:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:03:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:03:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:03:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:03:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 03:03:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:55,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 03:03:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:56,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 03:03:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:56,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 03:03:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:56,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-17 03:03:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:56,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-17 03:03:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-11-17 03:03:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:03:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-17 03:03:56,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:03:56,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319200787] [2021-11-17 03:03:56,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319200787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:03:56,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:03:56,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 03:03:56,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400308788] [2021-11-17 03:03:56,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:03:56,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 03:03:56,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:03:56,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 03:03:56,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:03:56,047 INFO L87 Difference]: Start difference. First operand 34422 states and 47611 transitions. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:03:58,136 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:00,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:02,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:05,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:04:05,819 INFO L93 Difference]: Finished difference Result 71610 states and 99345 transitions. [2021-11-17 03:04:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 03:04:05,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 269 [2021-11-17 03:04:05,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:04:05,909 INFO L225 Difference]: With dead ends: 71610 [2021-11-17 03:04:05,909 INFO L226 Difference]: Without dead ends: 37634 [2021-11-17 03:04:05,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-17 03:04:05,967 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 807 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 608 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 4024 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-17 03:04:05,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 4024 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 1216 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2021-11-17 03:04:05,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37634 states. [2021-11-17 03:04:06,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37634 to 34518. [2021-11-17 03:04:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34518 states, 26236 states have (on average 1.3191035218783351) internal successors, (34608), 26430 states have internal predecessors, (34608), 6336 states have call successors, (6336), 1761 states have call predecessors, (6336), 1945 states have return successors, (6763), 6416 states have call predecessors, (6763), 6334 states have call successors, (6763) [2021-11-17 03:04:07,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34518 states to 34518 states and 47707 transitions. [2021-11-17 03:04:07,200 INFO L78 Accepts]: Start accepts. Automaton has 34518 states and 47707 transitions. Word has length 269 [2021-11-17 03:04:07,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:04:07,201 INFO L470 AbstractCegarLoop]: Abstraction has 34518 states and 47707 transitions. [2021-11-17 03:04:07,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:04:07,201 INFO L276 IsEmpty]: Start isEmpty. Operand 34518 states and 47707 transitions. [2021-11-17 03:04:07,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-17 03:04:07,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:04:07,208 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:04:07,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-17 03:04:07,208 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:04:07,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:04:07,208 INFO L85 PathProgramCache]: Analyzing trace with hash -881486406, now seen corresponding path program 1 times [2021-11-17 03:04:07,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:04:07,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994725990] [2021-11-17 03:04:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:04:07,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:04:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:04:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:04:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:04:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:04:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:04:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:04:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:04:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:04:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:04:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 03:04:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 03:04:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 03:04:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 03:04:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-17 03:04:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-17 03:04:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-11-17 03:04:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-17 03:04:07,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:04:07,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994725990] [2021-11-17 03:04:07,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994725990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:04:07,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:04:07,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 03:04:07,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148698027] [2021-11-17 03:04:07,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:04:07,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 03:04:07,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:04:07,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 03:04:07,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:04:07,614 INFO L87 Difference]: Start difference. First operand 34518 states and 47707 transitions. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:04:09,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:12,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:14,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:17,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:19,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:22,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:04:22,733 INFO L93 Difference]: Finished difference Result 71274 states and 98721 transitions. [2021-11-17 03:04:22,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 03:04:22,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 269 [2021-11-17 03:04:22,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:04:22,832 INFO L225 Difference]: With dead ends: 71274 [2021-11-17 03:04:22,833 INFO L226 Difference]: Without dead ends: 37202 [2021-11-17 03:04:22,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-17 03:04:22,903 INFO L933 BasicCegarLoop]: 945 mSDtfsCounter, 591 mSDsluCounter, 4115 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 433 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 5060 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-11-17 03:04:22,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 5060 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1562 Invalid, 5 Unknown, 0 Unchecked, 14.0s Time] [2021-11-17 03:04:22,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37202 states. [2021-11-17 03:04:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37202 to 34614. [2021-11-17 03:04:24,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34614 states, 26332 states have (on average 1.3179401488682971) internal successors, (34704), 26526 states have internal predecessors, (34704), 6336 states have call successors, (6336), 1761 states have call predecessors, (6336), 1945 states have return successors, (6763), 6416 states have call predecessors, (6763), 6334 states have call successors, (6763) [2021-11-17 03:04:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34614 states to 34614 states and 47803 transitions. [2021-11-17 03:04:24,146 INFO L78 Accepts]: Start accepts. Automaton has 34614 states and 47803 transitions. Word has length 269 [2021-11-17 03:04:24,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:04:24,146 INFO L470 AbstractCegarLoop]: Abstraction has 34614 states and 47803 transitions. [2021-11-17 03:04:24,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:04:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand 34614 states and 47803 transitions. [2021-11-17 03:04:24,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-17 03:04:24,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:04:24,154 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:04:24,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-17 03:04:24,155 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:04:24,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:04:24,155 INFO L85 PathProgramCache]: Analyzing trace with hash 723349173, now seen corresponding path program 1 times [2021-11-17 03:04:24,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:04:24,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264292449] [2021-11-17 03:04:24,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:04:24,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:04:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:04:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:04:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:04:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:04:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:04:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:04:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:04:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:04:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:04:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 03:04:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 03:04:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 03:04:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:04:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-17 03:04:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-17 03:04:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-11-17 03:04:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-17 03:04:24,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:04:24,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264292449] [2021-11-17 03:04:24,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264292449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:04:24,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:04:24,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 03:04:24,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775773153] [2021-11-17 03:04:24,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:04:24,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 03:04:24,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:04:24,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 03:04:24,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:04:24,578 INFO L87 Difference]: Start difference. First operand 34614 states and 47803 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:04:26,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:29,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:31,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:33,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:04:37,012 INFO L93 Difference]: Finished difference Result 71610 states and 99057 transitions. [2021-11-17 03:04:37,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 03:04:37,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 271 [2021-11-17 03:04:37,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:04:37,095 INFO L225 Difference]: With dead ends: 71610 [2021-11-17 03:04:37,095 INFO L226 Difference]: Without dead ends: 37442 [2021-11-17 03:04:37,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-17 03:04:37,147 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 803 mSDsluCounter, 3597 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 616 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 4544 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-17 03:04:37,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 4544 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 1359 Invalid, 4 Unknown, 0 Unchecked, 11.2s Time] [2021-11-17 03:04:37,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37442 states. [2021-11-17 03:04:38,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37442 to 34710. [2021-11-17 03:04:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34710 states, 26428 states have (on average 1.3167852277887089) internal successors, (34800), 26622 states have internal predecessors, (34800), 6336 states have call successors, (6336), 1761 states have call predecessors, (6336), 1945 states have return successors, (6763), 6416 states have call predecessors, (6763), 6334 states have call successors, (6763) [2021-11-17 03:04:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34710 states to 34710 states and 47899 transitions. [2021-11-17 03:04:38,213 INFO L78 Accepts]: Start accepts. Automaton has 34710 states and 47899 transitions. Word has length 271 [2021-11-17 03:04:38,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:04:38,214 INFO L470 AbstractCegarLoop]: Abstraction has 34710 states and 47899 transitions. [2021-11-17 03:04:38,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:04:38,214 INFO L276 IsEmpty]: Start isEmpty. Operand 34710 states and 47899 transitions. [2021-11-17 03:04:38,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-17 03:04:38,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:04:38,223 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:04:38,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-17 03:04:38,224 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:04:38,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:04:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash 58323866, now seen corresponding path program 1 times [2021-11-17 03:04:38,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:04:38,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046502519] [2021-11-17 03:04:38,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:04:38,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:04:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:04:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:04:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:04:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:04:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:04:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:04:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:04:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:04:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:04:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 03:04:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 03:04:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-17 03:04:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-11-17 03:04:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 03:04:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 03:04:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 03:04:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-17 03:04:38,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:04:38,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046502519] [2021-11-17 03:04:38,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046502519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:04:38,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:04:38,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 03:04:38,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6016000] [2021-11-17 03:04:38,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:04:38,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 03:04:38,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:04:38,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 03:04:38,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-17 03:04:38,802 INFO L87 Difference]: Start difference. First operand 34710 states and 47899 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 03:04:40,874 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:43,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:45,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:48,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:50,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:04:54,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:04:54,027 INFO L93 Difference]: Finished difference Result 60456 states and 83320 transitions. [2021-11-17 03:04:54,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 03:04:54,027 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 284 [2021-11-17 03:04:54,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:04:54,116 INFO L225 Difference]: With dead ends: 60456 [2021-11-17 03:04:54,116 INFO L226 Difference]: Without dead ends: 37340 [2021-11-17 03:04:54,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-17 03:04:54,166 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 957 mSDsluCounter, 3321 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 769 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 4263 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 769 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-17 03:04:54,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [999 Valid, 4263 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [769 Valid, 1209 Invalid, 5 Unknown, 0 Unchecked, 14.1s Time] [2021-11-17 03:04:54,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37340 states. [2021-11-17 03:04:55,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37340 to 34710. [2021-11-17 03:04:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34710 states, 26428 states have (on average 1.316104131981232) internal successors, (34782), 26622 states have internal predecessors, (34782), 6336 states have call successors, (6336), 1761 states have call predecessors, (6336), 1945 states have return successors, (6763), 6416 states have call predecessors, (6763), 6334 states have call successors, (6763) [2021-11-17 03:04:55,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34710 states to 34710 states and 47881 transitions. [2021-11-17 03:04:55,547 INFO L78 Accepts]: Start accepts. Automaton has 34710 states and 47881 transitions. Word has length 284 [2021-11-17 03:04:55,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:04:55,548 INFO L470 AbstractCegarLoop]: Abstraction has 34710 states and 47881 transitions. [2021-11-17 03:04:55,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 03:04:55,548 INFO L276 IsEmpty]: Start isEmpty. Operand 34710 states and 47881 transitions. [2021-11-17 03:04:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-17 03:04:55,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:04:55,555 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:04:55,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-17 03:04:55,555 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:04:55,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:04:55,556 INFO L85 PathProgramCache]: Analyzing trace with hash 759923740, now seen corresponding path program 1 times [2021-11-17 03:04:55,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:04:55,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501800625] [2021-11-17 03:04:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:04:55,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:04:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:04:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:04:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:04:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:04:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:04:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:04:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:04:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:04:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:04:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 03:04:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 03:04:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:04:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-17 03:04:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:55,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:04:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:56,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-11-17 03:04:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 03:04:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:56,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 03:04:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:56,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 03:04:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:04:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-17 03:04:56,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:04:56,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501800625] [2021-11-17 03:04:56,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501800625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:04:56,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:04:56,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 03:04:56,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376289297] [2021-11-17 03:04:56,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:04:56,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 03:04:56,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:04:56,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 03:04:56,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-17 03:04:56,086 INFO L87 Difference]: Start difference. First operand 34710 states and 47881 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-17 03:04:58,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:05:00,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:05:03,033 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:05:05,383 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:05:09,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:05:09,002 INFO L93 Difference]: Finished difference Result 71712 states and 98832 transitions. [2021-11-17 03:05:09,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 03:05:09,003 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 284 [2021-11-17 03:05:09,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:05:09,228 INFO L225 Difference]: With dead ends: 71712 [2021-11-17 03:05:09,229 INFO L226 Difference]: Without dead ends: 37448 [2021-11-17 03:05:09,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-17 03:05:09,276 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 792 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 588 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 4445 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-17 03:05:09,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 4445 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 1414 Invalid, 4 Unknown, 0 Unchecked, 11.6s Time] [2021-11-17 03:05:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37448 states. [2021-11-17 03:05:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37448 to 34764. [2021-11-17 03:05:10,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34764 states, 26482 states have (on average 1.315459557435239) internal successors, (34836), 26676 states have internal predecessors, (34836), 6336 states have call successors, (6336), 1761 states have call predecessors, (6336), 1945 states have return successors, (6763), 6416 states have call predecessors, (6763), 6334 states have call successors, (6763) [2021-11-17 03:05:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34764 states to 34764 states and 47935 transitions. [2021-11-17 03:05:10,506 INFO L78 Accepts]: Start accepts. Automaton has 34764 states and 47935 transitions. Word has length 284 [2021-11-17 03:05:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:05:10,506 INFO L470 AbstractCegarLoop]: Abstraction has 34764 states and 47935 transitions. [2021-11-17 03:05:10,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-17 03:05:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 34764 states and 47935 transitions. [2021-11-17 03:05:10,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-17 03:05:10,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:05:10,514 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:05:10,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-17 03:05:10,514 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:05:10,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:05:10,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1045514594, now seen corresponding path program 1 times [2021-11-17 03:05:10,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:05:10,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598339754] [2021-11-17 03:05:10,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:05:10,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:05:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:05:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:05:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:05:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:05:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:05:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:05:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:05:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:05:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:05:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 03:05:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:10,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 03:05:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:11,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:11,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:11,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-17 03:05:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:11,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-11-17 03:05:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:11,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 03:05:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 03:05:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:11,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 03:05:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2021-11-17 03:05:11,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:05:11,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598339754] [2021-11-17 03:05:11,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598339754] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 03:05:11,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893508397] [2021-11-17 03:05:11,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:05:11,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:05:11,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:05:11,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 03:05:11,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-17 03:05:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:24,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 6816 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-17 03:05:24,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 03:05:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-17 03:05:25,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 03:05:25,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893508397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:05:25,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 03:05:25,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 16 [2021-11-17 03:05:25,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790730098] [2021-11-17 03:05:25,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:05:25,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:05:25,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:05:25,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:05:25,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-17 03:05:25,091 INFO L87 Difference]: Start difference. First operand 34764 states and 47935 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 6 states have internal predecessors, (121), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 03:05:26,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:05:26,514 INFO L93 Difference]: Finished difference Result 76101 states and 107831 transitions. [2021-11-17 03:05:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 03:05:26,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 6 states have internal predecessors, (121), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 284 [2021-11-17 03:05:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:05:26,648 INFO L225 Difference]: With dead ends: 76101 [2021-11-17 03:05:26,649 INFO L226 Difference]: Without dead ends: 52940 [2021-11-17 03:05:26,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 350 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-17 03:05:26,705 INFO L933 BasicCegarLoop]: 1488 mSDtfsCounter, 443 mSDsluCounter, 6990 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 8478 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 03:05:26,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 8478 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 03:05:26,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52940 states. [2021-11-17 03:05:28,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52940 to 34719. [2021-11-17 03:05:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34719 states, 26446 states have (on average 1.315208349088709) internal successors, (34782), 26640 states have internal predecessors, (34782), 6327 states have call successors, (6327), 1761 states have call predecessors, (6327), 1945 states have return successors, (6754), 6407 states have call predecessors, (6754), 6325 states have call successors, (6754) [2021-11-17 03:05:28,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34719 states to 34719 states and 47863 transitions. [2021-11-17 03:05:28,424 INFO L78 Accepts]: Start accepts. Automaton has 34719 states and 47863 transitions. Word has length 284 [2021-11-17 03:05:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:05:28,424 INFO L470 AbstractCegarLoop]: Abstraction has 34719 states and 47863 transitions. [2021-11-17 03:05:28,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 6 states have internal predecessors, (121), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 03:05:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 34719 states and 47863 transitions. [2021-11-17 03:05:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-17 03:05:28,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:05:28,431 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:05:28,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-17 03:05:28,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-17 03:05:28,632 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:05:28,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:05:28,633 INFO L85 PathProgramCache]: Analyzing trace with hash -53133396, now seen corresponding path program 1 times [2021-11-17 03:05:28,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:05:28,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575754902] [2021-11-17 03:05:28,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:05:28,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:05:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:05:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:05:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:05:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:05:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:05:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:05:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:05:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:05:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:05:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 03:05:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 03:05:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 03:05:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 03:05:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 03:05:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-11-17 03:05:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-11-17 03:05:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-17 03:05:29,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:05:29,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575754902] [2021-11-17 03:05:29,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575754902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:05:29,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:05:29,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-17 03:05:29,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576701913] [2021-11-17 03:05:29,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:05:29,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-17 03:05:29,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:05:29,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-17 03:05:29,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-17 03:05:29,623 INFO L87 Difference]: Start difference. First operand 34719 states and 47863 transitions. Second operand has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 10 states have internal predecessors, (136), 3 states have call successors, (22), 7 states have call predecessors, (22), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-17 03:05:31,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:05:34,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:05:36,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:05:39,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:05:44,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:05:44,451 INFO L93 Difference]: Finished difference Result 73392 states and 101160 transitions. [2021-11-17 03:05:44,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-17 03:05:44,455 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 10 states have internal predecessors, (136), 3 states have call successors, (22), 7 states have call predecessors, (22), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 273 [2021-11-17 03:05:44,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:05:44,587 INFO L225 Difference]: With dead ends: 73392 [2021-11-17 03:05:44,587 INFO L226 Difference]: Without dead ends: 39119 [2021-11-17 03:05:44,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2021-11-17 03:05:44,694 INFO L933 BasicCegarLoop]: 951 mSDtfsCounter, 703 mSDsluCounter, 7354 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 486 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 8305 SdHoareTripleChecker+Invalid, 3728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-17 03:05:44,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 8305 Invalid, 3728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 3238 Invalid, 4 Unknown, 0 Unchecked, 13.0s Time] [2021-11-17 03:05:44,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39119 states. [2021-11-17 03:05:46,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39119 to 34989. [2021-11-17 03:05:46,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34989 states, 26626 states have (on average 1.315330879591377) internal successors, (35022), 26880 states have internal predecessors, (35022), 6357 states have call successors, (6357), 1761 states have call predecessors, (6357), 2005 states have return successors, (6922), 6437 states have call predecessors, (6922), 6355 states have call successors, (6922) [2021-11-17 03:05:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34989 states to 34989 states and 48301 transitions. [2021-11-17 03:05:46,320 INFO L78 Accepts]: Start accepts. Automaton has 34989 states and 48301 transitions. Word has length 273 [2021-11-17 03:05:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:05:46,321 INFO L470 AbstractCegarLoop]: Abstraction has 34989 states and 48301 transitions. [2021-11-17 03:05:46,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 10 states have internal predecessors, (136), 3 states have call successors, (22), 7 states have call predecessors, (22), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-17 03:05:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 34989 states and 48301 transitions. [2021-11-17 03:05:46,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-17 03:05:46,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:05:46,330 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:05:46,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-17 03:05:46,330 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:05:46,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:05:46,331 INFO L85 PathProgramCache]: Analyzing trace with hash -510386997, now seen corresponding path program 1 times [2021-11-17 03:05:46,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:05:46,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665464382] [2021-11-17 03:05:46,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:05:46,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:05:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:05:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:05:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:05:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:05:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:05:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:05:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:05:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:05:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:05:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:05:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:05:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 03:05:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 03:05:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 03:05:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-17 03:05:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 03:05:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-11-17 03:05:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:47,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-11-17 03:05:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:05:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2021-11-17 03:05:47,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:05:47,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665464382] [2021-11-17 03:05:47,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665464382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:05:47,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:05:47,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-17 03:05:47,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635880428] [2021-11-17 03:05:47,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:05:47,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 03:05:47,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:05:47,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 03:05:47,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-17 03:05:47,010 INFO L87 Difference]: Start difference. First operand 34989 states and 48301 transitions. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:05:49,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:05:51,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:05:54,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:05:56,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:06:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:06:00,639 INFO L93 Difference]: Finished difference Result 71845 states and 99209 transitions. [2021-11-17 03:06:00,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 03:06:00,639 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 273 [2021-11-17 03:06:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:06:00,751 INFO L225 Difference]: With dead ends: 71845 [2021-11-17 03:06:00,752 INFO L226 Difference]: Without dead ends: 37302 [2021-11-17 03:06:00,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-11-17 03:06:00,838 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 775 mSDsluCounter, 5072 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 590 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 6014 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-17 03:06:00,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 6014 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 1980 Invalid, 4 Unknown, 0 Unchecked, 11.9s Time] [2021-11-17 03:06:01,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37302 states. [2021-11-17 03:06:02,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37302 to 34878. [2021-11-17 03:06:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34878 states, 26570 states have (on average 1.3148663906661648) internal successors, (34936), 26819 states have internal predecessors, (34936), 6317 states have call successors, (6317), 1741 states have call predecessors, (6317), 1990 states have return successors, (6877), 6407 states have call predecessors, (6877), 6315 states have call successors, (6877) [2021-11-17 03:06:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34878 states to 34878 states and 48130 transitions. [2021-11-17 03:06:02,506 INFO L78 Accepts]: Start accepts. Automaton has 34878 states and 48130 transitions. Word has length 273 [2021-11-17 03:06:02,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:06:02,506 INFO L470 AbstractCegarLoop]: Abstraction has 34878 states and 48130 transitions. [2021-11-17 03:06:02,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 03:06:02,506 INFO L276 IsEmpty]: Start isEmpty. Operand 34878 states and 48130 transitions. [2021-11-17 03:06:02,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-17 03:06:02,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:06:02,516 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:06:02,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-17 03:06:02,516 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:06:02,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:06:02,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1261991272, now seen corresponding path program 1 times [2021-11-17 03:06:02,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:06:02,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375639453] [2021-11-17 03:06:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:06:02,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:06:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:06:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:06:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:06:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:06:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:06:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:06:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:06:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:06:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:06:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 03:06:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 03:06:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:02,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-17 03:06:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-11-17 03:06:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:03,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 03:06:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:03,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 03:06:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:03,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 03:06:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:06:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:03,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 03:06:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-17 03:06:03,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:06:03,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375639453] [2021-11-17 03:06:03,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375639453] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 03:06:03,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575457414] [2021-11-17 03:06:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:06:03,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:06:03,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:06:03,223 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 03:06:03,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-17 03:06:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:24,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 6887 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-17 03:06:24,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 03:06:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-17 03:06:25,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 03:06:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-17 03:06:26,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575457414] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 03:06:26,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 03:06:26,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 19 [2021-11-17 03:06:26,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123196108] [2021-11-17 03:06:26,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 03:06:26,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-17 03:06:26,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:06:26,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-17 03:06:26,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-17 03:06:26,207 INFO L87 Difference]: Start difference. First operand 34878 states and 48130 transitions. Second operand has 19 states, 17 states have (on average 11.0) internal successors, (187), 13 states have internal predecessors, (187), 4 states have call successors, (46), 8 states have call predecessors, (46), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-17 03:06:28,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:06:30,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:06:33,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:06:39,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:06:39,737 INFO L93 Difference]: Finished difference Result 72498 states and 100082 transitions. [2021-11-17 03:06:39,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-17 03:06:39,738 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 11.0) internal successors, (187), 13 states have internal predecessors, (187), 4 states have call successors, (46), 8 states have call predecessors, (46), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 297 [2021-11-17 03:06:39,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:06:39,855 INFO L225 Difference]: With dead ends: 72498 [2021-11-17 03:06:39,855 INFO L226 Difference]: Without dead ends: 37357 [2021-11-17 03:06:39,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 659 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2021-11-17 03:06:39,960 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 503 mSDsluCounter, 9016 mSDsCounter, 0 mSdLazyCounter, 4178 mSolverCounterSat, 263 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 9950 SdHoareTripleChecker+Invalid, 4444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 4178 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2021-11-17 03:06:39,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 9950 Invalid, 4444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 4178 Invalid, 3 Unknown, 0 Unchecked, 11.8s Time] [2021-11-17 03:06:39,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37357 states. [2021-11-17 03:06:41,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37357 to 34933. [2021-11-17 03:06:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34933 states, 26625 states have (on average 1.3142159624413146) internal successors, (34991), 26874 states have internal predecessors, (34991), 6317 states have call successors, (6317), 1741 states have call predecessors, (6317), 1990 states have return successors, (6877), 6407 states have call predecessors, (6877), 6315 states have call successors, (6877) [2021-11-17 03:06:41,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34933 states to 34933 states and 48185 transitions. [2021-11-17 03:06:41,556 INFO L78 Accepts]: Start accepts. Automaton has 34933 states and 48185 transitions. Word has length 297 [2021-11-17 03:06:41,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:06:41,556 INFO L470 AbstractCegarLoop]: Abstraction has 34933 states and 48185 transitions. [2021-11-17 03:06:41,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 11.0) internal successors, (187), 13 states have internal predecessors, (187), 4 states have call successors, (46), 8 states have call predecessors, (46), 6 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-17 03:06:41,557 INFO L276 IsEmpty]: Start isEmpty. Operand 34933 states and 48185 transitions. [2021-11-17 03:06:41,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-17 03:06:41,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:06:41,566 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:06:41,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-17 03:06:41,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:06:41,767 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:06:41,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:06:41,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1108116748, now seen corresponding path program 2 times [2021-11-17 03:06:41,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:06:41,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341332036] [2021-11-17 03:06:41,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:06:41,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:06:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:06:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:06:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:06:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:06:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:06:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:06:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:06:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:06:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:06:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 03:06:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 03:06:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:06:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-17 03:06:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:06:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 03:06:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 03:06:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 03:06:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 03:06:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:06:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 03:06:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:06:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-17 03:06:42,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:06:42,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341332036] [2021-11-17 03:06:42,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341332036] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 03:06:42,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585952737] [2021-11-17 03:06:42,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 03:06:42,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:06:42,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:06:42,472 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 03:06:42,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-17 03:07:16,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-17 03:07:16,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 03:07:16,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 6027 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-17 03:07:16,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 03:07:19,103 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_bus_scan_store_rio_mport_scan_~port~3#1.offset_BEFORE_CALL_2| Int) (|v_bus_scan_store_rio_mport_scan_~port~3#1.base_BEFORE_CALL_2| Int)) (not (= (mod (let ((.cse2 (+ 2775 |v_bus_scan_store_rio_mport_scan_~port~3#1.offset_BEFORE_CALL_2|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_bus_scan_store_rio_mport_scan_~port~3#1.base_BEFORE_CALL_2|) .cse2)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |v_bus_scan_store_rio_mport_scan_~port~3#1.base_BEFORE_CALL_2|) .cse2))) (+ (select (select |c_#memory_$Pointer$.offset| .cse0) .cse1) (select (select |c_#memory_$Pointer$.base| .cse0) .cse1)))) 18446744073709551616) 0))) is different from true [2021-11-17 03:07:21,220 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_bus_scan_store_rio_mport_scan_~port~3#1.offset_BEFORE_CALL_3| Int) (|v_bus_scan_store_rio_mport_scan_~port~3#1.base_BEFORE_CALL_3| Int)) (not (= (mod (let ((.cse2 (+ 2775 |v_bus_scan_store_rio_mport_scan_~port~3#1.offset_BEFORE_CALL_3|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_bus_scan_store_rio_mport_scan_~port~3#1.base_BEFORE_CALL_3|) .cse2)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |v_bus_scan_store_rio_mport_scan_~port~3#1.base_BEFORE_CALL_3|) .cse2))) (+ (select (select |c_#memory_$Pointer$.offset| .cse0) .cse1) (select (select |c_#memory_$Pointer$.base| .cse0) .cse1)))) 18446744073709551616) 0))) is different from true [2021-11-17 03:07:21,357 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-17 03:07:21,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 58 [2021-11-17 03:07:21,370 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-17 03:07:21,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 43 [2021-11-17 03:07:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2021-11-17 03:07:21,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 03:07:21,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585952737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:07:21,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 03:07:21,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 23 [2021-11-17 03:07:21,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327744516] [2021-11-17 03:07:21,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:07:21,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 03:07:21,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:07:21,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 03:07:21,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=373, Unknown=2, NotChecked=78, Total=506 [2021-11-17 03:07:21,564 INFO L87 Difference]: Start difference. First operand 34933 states and 48185 transitions. Second operand has 11 states, 9 states have (on average 14.444444444444445) internal successors, (130), 11 states have internal predecessors, (130), 5 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-17 03:07:23,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:07:26,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:07:28,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:07:28,352 INFO L93 Difference]: Finished difference Result 58817 states and 80876 transitions. [2021-11-17 03:07:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 03:07:28,353 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 14.444444444444445) internal successors, (130), 11 states have internal predecessors, (130), 5 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 298 [2021-11-17 03:07:28,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:07:28,454 INFO L225 Difference]: With dead ends: 58817 [2021-11-17 03:07:28,455 INFO L226 Difference]: Without dead ends: 35469 [2021-11-17 03:07:28,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 358 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=69, Invalid=537, Unknown=2, NotChecked=94, Total=702 [2021-11-17 03:07:28,524 INFO L933 BasicCegarLoop]: 1039 mSDtfsCounter, 52 mSDsluCounter, 7045 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 8084 SdHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 2124 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-17 03:07:28,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 8084 Invalid, 2369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 2 Unknown, 2124 Unchecked, 5.5s Time] [2021-11-17 03:07:28,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35469 states. [2021-11-17 03:07:29,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35469 to 34953. [2021-11-17 03:07:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34953 states, 26626 states have (on average 1.3135656876737023) internal successors, (34975), 26876 states have internal predecessors, (34975), 6317 states have call successors, (6317), 1777 states have call predecessors, (6317), 2009 states have return successors, (6841), 6389 states have call predecessors, (6841), 6315 states have call successors, (6841) [2021-11-17 03:07:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34953 states to 34953 states and 48133 transitions. [2021-11-17 03:07:30,045 INFO L78 Accepts]: Start accepts. Automaton has 34953 states and 48133 transitions. Word has length 298 [2021-11-17 03:07:30,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:07:30,046 INFO L470 AbstractCegarLoop]: Abstraction has 34953 states and 48133 transitions. [2021-11-17 03:07:30,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 14.444444444444445) internal successors, (130), 11 states have internal predecessors, (130), 5 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-17 03:07:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 34953 states and 48133 transitions. [2021-11-17 03:07:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-17 03:07:30,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:07:30,056 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:07:30,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-17 03:07:30,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:07:30,257 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:07:30,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:07:30,257 INFO L85 PathProgramCache]: Analyzing trace with hash -2042297956, now seen corresponding path program 1 times [2021-11-17 03:07:30,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:07:30,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950557534] [2021-11-17 03:07:30,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:07:30,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:07:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:07:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:07:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:07:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:07:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:07:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:07:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:07:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:07:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:07:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 03:07:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 03:07:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-17 03:07:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 03:07:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 03:07:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 03:07:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 03:07:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:07:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 03:07:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-17 03:07:30,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:07:30,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950557534] [2021-11-17 03:07:30,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950557534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:07:30,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:07:30,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-17 03:07:30,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106196316] [2021-11-17 03:07:30,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:07:30,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-17 03:07:30,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:07:30,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-17 03:07:30,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-17 03:07:30,884 INFO L87 Difference]: Start difference. First operand 34953 states and 48133 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 9 states have internal predecessors, (123), 5 states have call successors, (22), 8 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-17 03:07:33,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:07:35,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:07:37,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:07:40,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:07:42,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:07:49,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:07:49,603 INFO L93 Difference]: Finished difference Result 61953 states and 87559 transitions. [2021-11-17 03:07:49,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-17 03:07:49,603 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 9 states have internal predecessors, (123), 5 states have call successors, (22), 8 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 300 [2021-11-17 03:07:49,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:07:49,755 INFO L225 Difference]: With dead ends: 61953 [2021-11-17 03:07:49,755 INFO L226 Difference]: Without dead ends: 61942 [2021-11-17 03:07:49,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-11-17 03:07:49,782 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 3722 mSDsluCounter, 3457 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 1930 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 5227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1930 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-11-17 03:07:49,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3917 Valid, 4399 Invalid, 5227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1930 Valid, 3292 Invalid, 5 Unknown, 0 Unchecked, 16.2s Time] [2021-11-17 03:07:49,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61942 states. [2021-11-17 03:07:51,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61942 to 46257. [2021-11-17 03:07:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46257 states, 35245 states have (on average 1.312725209249539) internal successors, (46267), 35580 states have internal predecessors, (46267), 8367 states have call successors, (8367), 2332 states have call predecessors, (8367), 2644 states have return successors, (9089), 8464 states have call predecessors, (9089), 8365 states have call successors, (9089) [2021-11-17 03:07:51,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46257 states to 46257 states and 63723 transitions. [2021-11-17 03:07:51,928 INFO L78 Accepts]: Start accepts. Automaton has 46257 states and 63723 transitions. Word has length 300 [2021-11-17 03:07:51,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:07:51,929 INFO L470 AbstractCegarLoop]: Abstraction has 46257 states and 63723 transitions. [2021-11-17 03:07:51,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 9 states have internal predecessors, (123), 5 states have call successors, (22), 8 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-17 03:07:51,929 INFO L276 IsEmpty]: Start isEmpty. Operand 46257 states and 63723 transitions. [2021-11-17 03:07:51,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-17 03:07:51,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:07:51,942 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:07:51,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-17 03:07:51,942 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:07:51,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:07:51,943 INFO L85 PathProgramCache]: Analyzing trace with hash -332109548, now seen corresponding path program 1 times [2021-11-17 03:07:51,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:07:51,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829035250] [2021-11-17 03:07:51,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:07:51,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:07:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:07:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:07:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:07:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:07:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:07:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:07:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:07:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:07:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:07:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:07:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 03:07:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 03:07:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 03:07:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-17 03:07:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-11-17 03:07:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 03:07:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:07:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 03:07:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 03:07:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:07:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 24 proven. 14 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-11-17 03:07:52,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:07:52,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829035250] [2021-11-17 03:07:52,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829035250] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 03:07:52,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74826637] [2021-11-17 03:07:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:07:52,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:07:52,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:07:52,499 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 03:07:52,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-17 03:08:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:03,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 6795 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-17 03:08:03,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 03:08:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2021-11-17 03:08:04,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 03:08:04,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74826637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:08:04,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 03:08:04,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 15 [2021-11-17 03:08:04,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656013374] [2021-11-17 03:08:04,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:08:04,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 03:08:04,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:08:04,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 03:08:04,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-17 03:08:04,212 INFO L87 Difference]: Start difference. First operand 46257 states and 63723 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 03:08:06,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:08:06,139 INFO L93 Difference]: Finished difference Result 93832 states and 133178 transitions. [2021-11-17 03:08:06,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 03:08:06,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 294 [2021-11-17 03:08:06,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:08:06,310 INFO L225 Difference]: With dead ends: 93832 [2021-11-17 03:08:06,311 INFO L226 Difference]: Without dead ends: 70390 [2021-11-17 03:08:06,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 355 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-17 03:08:06,365 INFO L933 BasicCegarLoop]: 1518 mSDtfsCounter, 425 mSDsluCounter, 7129 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 8647 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 03:08:06,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 8647 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 03:08:06,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70390 states. [2021-11-17 03:08:08,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70390 to 46257. [2021-11-17 03:08:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46257 states, 35245 states have (on average 1.312157752872748) internal successors, (46247), 35580 states have internal predecessors, (46247), 8367 states have call successors, (8367), 2332 states have call predecessors, (8367), 2644 states have return successors, (9089), 8464 states have call predecessors, (9089), 8365 states have call successors, (9089) [2021-11-17 03:08:08,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46257 states to 46257 states and 63703 transitions. [2021-11-17 03:08:08,764 INFO L78 Accepts]: Start accepts. Automaton has 46257 states and 63703 transitions. Word has length 294 [2021-11-17 03:08:08,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:08:08,765 INFO L470 AbstractCegarLoop]: Abstraction has 46257 states and 63703 transitions. [2021-11-17 03:08:08,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 03:08:08,765 INFO L276 IsEmpty]: Start isEmpty. Operand 46257 states and 63703 transitions. [2021-11-17 03:08:08,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-17 03:08:08,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:08:08,778 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 03:08:08,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-17 03:08:08,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:08:08,979 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:08:08,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:08:08,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2087775607, now seen corresponding path program 1 times [2021-11-17 03:08:08,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:08:08,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445347005] [2021-11-17 03:08:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:08:08,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:08:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:08:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:08:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:08:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:08:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:08:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:08:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:08:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:08:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:08:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:16,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 03:08:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:17,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 03:08:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:17,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 03:08:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:17,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-17 03:08:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-11-17 03:08:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:17,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 03:08:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:17,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:17,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 03:08:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:08:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:17,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 03:08:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-17 03:08:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2021-11-17 03:08:17,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:08:17,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445347005] [2021-11-17 03:08:17,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445347005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:08:17,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 03:08:17,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-17 03:08:17,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457939525] [2021-11-17 03:08:17,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:08:17,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-17 03:08:17,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:08:17,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-17 03:08:17,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-17 03:08:17,363 INFO L87 Difference]: Start difference. First operand 46257 states and 63703 transitions. Second operand has 15 states, 13 states have (on average 11.923076923076923) internal successors, (155), 9 states have internal predecessors, (155), 5 states have call successors, (23), 8 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-17 03:08:19,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:08:21,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:08:24,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:08:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:08:29,520 INFO L93 Difference]: Finished difference Result 48830 states and 66877 transitions. [2021-11-17 03:08:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 03:08:29,522 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 11.923076923076923) internal successors, (155), 9 states have internal predecessors, (155), 5 states have call successors, (23), 8 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 5 states have call successors, (22) Word has length 305 [2021-11-17 03:08:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:08:29,586 INFO L225 Difference]: With dead ends: 48830 [2021-11-17 03:08:29,586 INFO L226 Difference]: Without dead ends: 25348 [2021-11-17 03:08:29,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2021-11-17 03:08:29,631 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 630 mSDsluCounter, 7125 mSDsCounter, 0 mSdLazyCounter, 3154 mSolverCounterSat, 400 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 8066 SdHoareTripleChecker+Invalid, 3557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 3154 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-17 03:08:29,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 8066 Invalid, 3557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 3154 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2021-11-17 03:08:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25348 states. [2021-11-17 03:08:30,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25348 to 23640. [2021-11-17 03:08:30,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23640 states, 17999 states have (on average 1.3050169453858547) internal successors, (23489), 18163 states have internal predecessors, (23489), 4276 states have call successors, (4276), 1222 states have call predecessors, (4276), 1364 states have return successors, (4583), 4314 states have call predecessors, (4583), 4275 states have call successors, (4583) [2021-11-17 03:08:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23640 states to 23640 states and 32348 transitions. [2021-11-17 03:08:30,664 INFO L78 Accepts]: Start accepts. Automaton has 23640 states and 32348 transitions. Word has length 305 [2021-11-17 03:08:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:08:30,665 INFO L470 AbstractCegarLoop]: Abstraction has 23640 states and 32348 transitions. [2021-11-17 03:08:30,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 11.923076923076923) internal successors, (155), 9 states have internal predecessors, (155), 5 states have call successors, (23), 8 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-17 03:08:30,665 INFO L276 IsEmpty]: Start isEmpty. Operand 23640 states and 32348 transitions. [2021-11-17 03:08:30,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2021-11-17 03:08:30,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 03:08:30,695 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2021-11-17 03:08:30,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-17 03:08:30,695 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 03:08:30,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 03:08:30,695 INFO L85 PathProgramCache]: Analyzing trace with hash -966148090, now seen corresponding path program 1 times [2021-11-17 03:08:30,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 03:08:30,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321470837] [2021-11-17 03:08:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:08:30,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 03:08:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 03:08:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 03:08:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:08:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 03:08:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 03:08:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 03:08:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 03:08:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-17 03:08:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 03:08:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 03:08:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 03:08:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-17 03:08:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 03:08:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 03:08:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 03:08:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 03:08:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 03:08:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-17 03:08:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-17 03:08:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 03:08:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 03:08:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-11-17 03:08:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 03:08:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-11-17 03:08:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-11-17 03:08:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-11-17 03:08:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2021-11-17 03:08:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2021-11-17 03:08:31,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 03:08:31,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321470837] [2021-11-17 03:08:31,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321470837] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 03:08:31,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104904662] [2021-11-17 03:08:31,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 03:08:31,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 03:08:31,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 03:08:31,553 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 03:08:31,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-17 03:08:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 03:08:32,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 7468 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-17 03:08:32,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 03:08:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2021-11-17 03:08:33,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 03:08:33,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104904662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 03:08:33,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 03:08:33,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 12 [2021-11-17 03:08:33,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397931199] [2021-11-17 03:08:33,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 03:08:33,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 03:08:33,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 03:08:33,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 03:08:33,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-17 03:08:33,424 INFO L87 Difference]: Start difference. First operand 23640 states and 32348 transitions. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 4 states have call successors, (34), 5 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-17 03:08:35,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:08:38,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:08:40,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 03:08:42,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 03:08:42,636 INFO L93 Difference]: Finished difference Result 23640 states and 32348 transitions. [2021-11-17 03:08:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 03:08:42,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 4 states have call successors, (34), 5 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 397 [2021-11-17 03:08:42,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 03:08:42,637 INFO L225 Difference]: With dead ends: 23640 [2021-11-17 03:08:42,637 INFO L226 Difference]: Without dead ends: 0 [2021-11-17 03:08:42,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 500 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-17 03:08:42,660 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 1053 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 315 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-17 03:08:42,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1133 Valid, 2370 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 1197 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2021-11-17 03:08:42,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-17 03:08:42,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-17 03:08:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-17 03:08:42,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-17 03:08:42,663 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 397 [2021-11-17 03:08:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 03:08:42,663 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-17 03:08:42,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 4 states have call successors, (34), 5 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-17 03:08:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-17 03:08:42,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-17 03:08:42,666 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-17 03:08:42,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-17 03:08:42,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-17 03:08:42,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Killed by 15