./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.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 f78e25bf76e2d1d395e5e41868c5ddb628a36f1efdf095bb509ea6a3a366617b --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:59:13,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:59:13,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:59:13,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:59:13,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:59:13,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:59:13,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:59:13,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:59:13,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:59:13,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:59:13,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:59:13,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:59:13,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:59:13,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:59:13,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:59:13,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:59:13,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:59:13,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:59:13,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:59:13,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:59:13,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:59:13,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:59:13,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:59:13,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:59:13,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:59:13,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:59:13,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:59:13,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:59:13,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:59:13,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:59:13,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:59:13,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:59:13,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:59:13,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:59:13,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:59:13,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:59:13,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:59:13,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:59:13,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:59:13,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:59:13,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:59:13,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:59:13,704 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:59:13,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:59:13,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:59:13,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:59:13,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:59:13,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:59:13,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:59:13,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:59:13,706 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:59:13,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:59:13,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:59:13,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:59:13,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:59:13,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:59:13,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:59:13,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:59:13,708 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:59:13,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:59:13,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:59:13,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:59:13,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:59:13,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:59:13,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:59:13,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:59:13,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:59:13,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:59:13,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:59:13,710 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:59:13,710 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:59:13,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:59:13,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:59:13,711 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f78e25bf76e2d1d395e5e41868c5ddb628a36f1efdf095bb509ea6a3a366617b [2021-12-16 03:59:13,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:59:13,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:59:13,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:59:13,949 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:59:13,949 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:59:13,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2021-12-16 03:59:14,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee291d93d/8296d44c602a411186e8c43709b4453b/FLAGb20bc2652 [2021-12-16 03:59:14,678 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:59:14,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2021-12-16 03:59:14,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee291d93d/8296d44c602a411186e8c43709b4453b/FLAGb20bc2652 [2021-12-16 03:59:14,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee291d93d/8296d44c602a411186e8c43709b4453b [2021-12-16 03:59:14,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:59:14,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:59:14,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:59:14,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:59:14,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:59:14,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:59:14" (1/1) ... [2021-12-16 03:59:14,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad28107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:14, skipping insertion in model container [2021-12-16 03:59:14,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:59:14" (1/1) ... [2021-12-16 03:59:14,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:59:14,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:59:15,733 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i[162928,162941] [2021-12-16 03:59:16,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:59:16,085 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:59:16,206 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i[162928,162941] [2021-12-16 03:59:16,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:59:16,412 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:59:16,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:16 WrapperNode [2021-12-16 03:59:16,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:59:16,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:59:16,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:59:16,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:59:16,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:16" (1/1) ... [2021-12-16 03:59:16,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:16" (1/1) ... [2021-12-16 03:59:16,563 INFO L137 Inliner]: procedures = 180, calls = 578, calls flagged for inlining = 99, calls inlined = 93, statements flattened = 2364 [2021-12-16 03:59:16,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:59:16,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:59:16,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:59:16,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:59:16,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:16" (1/1) ... [2021-12-16 03:59:16,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:16" (1/1) ... [2021-12-16 03:59:16,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:16" (1/1) ... [2021-12-16 03:59:16,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:16" (1/1) ... [2021-12-16 03:59:16,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:16" (1/1) ... [2021-12-16 03:59:16,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:16" (1/1) ... [2021-12-16 03:59:16,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:16" (1/1) ... [2021-12-16 03:59:16,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:59:16,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:59:16,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:59:16,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:59:16,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:16" (1/1) ... [2021-12-16 03:59:16,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:59:16,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:59:16,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:59:16,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:59:16,842 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-16 03:59:16,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-16 03:59:16,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 03:59:16,843 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_push [2021-12-16 03:59:16,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_push [2021-12-16 03:59:16,843 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-16 03:59:16,843 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-16 03:59:16,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 03:59:16,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 03:59:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 03:59:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 03:59:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:59:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure crc_ccitt_byte [2021-12-16 03:59:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure crc_ccitt_byte [2021-12-16 03:59:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure ap_put [2021-12-16 03:59:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_put [2021-12-16 03:59:16,845 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2021-12-16 03:59:16,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2021-12-16 03:59:16,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 03:59:16,846 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 03:59:16,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-16 03:59:16,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-16 03:59:16,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 03:59:16,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 03:59:16,846 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_hangup [2021-12-16 03:59:16,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_hangup [2021-12-16 03:59:16,847 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-16 03:59:16,847 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-16 03:59:16,847 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-12-16 03:59:16,847 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-12-16 03:59:16,847 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2021-12-16 03:59:16,847 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2021-12-16 03:59:16,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-16 03:59:16,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-16 03:59:16,848 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 03:59:16,848 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 03:59:16,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:59:16,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 03:59:16,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 03:59:16,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 03:59:16,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 03:59:16,849 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-16 03:59:16,849 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-16 03:59:16,849 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:59:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:59:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_close [2021-12-16 03:59:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_close [2021-12-16 03:59:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:59:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_poll [2021-12-16 03:59:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_poll [2021-12-16 03:59:16,851 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-16 03:59:16,851 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-16 03:59:16,851 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-16 03:59:16,851 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-16 03:59:16,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:59:16,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:59:16,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:59:16,853 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-12-16 03:59:16,853 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-12-16 03:59:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure ap_get [2021-12-16 03:59:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_get [2021-12-16 03:59:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-12-16 03:59:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-12-16 03:59:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:59:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-16 03:59:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-16 03:59:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-12-16 03:59:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-12-16 03:59:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:59:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:59:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-16 03:59:16,856 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-16 03:59:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-16 03:59:16,856 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-16 03:59:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure async_lcp_peek [2021-12-16 03:59:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure async_lcp_peek [2021-12-16 03:59:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:59:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-16 03:59:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-16 03:59:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 03:59:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-16 03:59:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-16 03:59:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-16 03:59:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-16 03:59:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:59:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:59:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_ioctl [2021-12-16 03:59:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_ioctl [2021-12-16 03:59:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-16 03:59:16,859 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-16 03:59:17,297 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:59:17,299 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:59:17,731 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 03:59:20,910 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:59:20,928 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:59:20,928 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-16 03:59:20,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:59:20 BoogieIcfgContainer [2021-12-16 03:59:20,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:59:20,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:59:20,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:59:20,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:59:20,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:59:14" (1/3) ... [2021-12-16 03:59:20,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a738d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:59:20, skipping insertion in model container [2021-12-16 03:59:20,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:59:16" (2/3) ... [2021-12-16 03:59:20,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a738d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:59:20, skipping insertion in model container [2021-12-16 03:59:20,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:59:20" (3/3) ... [2021-12-16 03:59:20,941 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2021-12-16 03:59:20,945 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:59:20,945 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:59:20,986 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:59:20,991 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:59:20,992 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:59:21,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 723 states, 569 states have (on average 1.437609841827768) internal successors, (818), 583 states have internal predecessors, (818), 116 states have call successors, (116), 37 states have call predecessors, (116), 36 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2021-12-16 03:59:21,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-16 03:59:21,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:59:21,026 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:59:21,027 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:59:21,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:59:21,031 INFO L85 PathProgramCache]: Analyzing trace with hash 678107625, now seen corresponding path program 1 times [2021-12-16 03:59:21,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:59:21,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758637130] [2021-12-16 03:59:21,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:59:21,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:59:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:21,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:59:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:21,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:59:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:21,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:59:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:21,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:59:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:21,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:59:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:21,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:59:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:21,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:59:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:21,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:59:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:21,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:59:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:59:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-16 03:59:21,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:59:21,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758637130] [2021-12-16 03:59:21,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758637130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:59:21,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:59:21,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:59:21,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237200696] [2021-12-16 03:59:21,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:59:21,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:59:21,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:59:21,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:59:21,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:59:21,618 INFO L87 Difference]: Start difference. First operand has 723 states, 569 states have (on average 1.437609841827768) internal successors, (818), 583 states have internal predecessors, (818), 116 states have call successors, (116), 37 states have call predecessors, (116), 36 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-16 03:59:24,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:59:25,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:59:25,372 INFO L93 Difference]: Finished difference Result 2286 states and 3408 transitions. [2021-12-16 03:59:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:59:25,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 78 [2021-12-16 03:59:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:59:25,395 INFO L225 Difference]: With dead ends: 2286 [2021-12-16 03:59:25,395 INFO L226 Difference]: Without dead ends: 1552 [2021-12-16 03:59:25,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:59:25,408 INFO L933 BasicCegarLoop]: 1104 mSDtfsCounter, 1440 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 308 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:59:25,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1535 Valid, 2301 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 789 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-12-16 03:59:25,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-12-16 03:59:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1380. [2021-12-16 03:59:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1098 states have (on average 1.424408014571949) internal successors, (1564), 1114 states have internal predecessors, (1564), 211 states have call successors, (211), 71 states have call predecessors, (211), 70 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2021-12-16 03:59:25,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1985 transitions. [2021-12-16 03:59:25,541 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1985 transitions. Word has length 78 [2021-12-16 03:59:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:59:25,542 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 1985 transitions. [2021-12-16 03:59:25,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-16 03:59:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1985 transitions. [2021-12-16 03:59:25,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-16 03:59:25,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:59:25,547 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:59:25,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:59:25,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:59:25,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:59:25,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1376133839, now seen corresponding path program 1 times [2021-12-16 03:59:25,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:59:25,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123665306] [2021-12-16 03:59:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:59:25,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:59:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:25,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:59:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:59:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:25,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:59:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:25,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:59:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:25,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:59:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:25,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:59:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:25,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:59:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:25,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:59:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:25,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:59:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:25,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:59:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-16 03:59:25,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:59:25,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123665306] [2021-12-16 03:59:25,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123665306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:59:25,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:59:25,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:59:25,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027911690] [2021-12-16 03:59:25,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:59:25,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:59:25,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:59:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:59:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:59:25,802 INFO L87 Difference]: Start difference. First operand 1380 states and 1985 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-16 03:59:29,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:59:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:59:29,827 INFO L93 Difference]: Finished difference Result 4425 states and 6457 transitions. [2021-12-16 03:59:29,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:59:29,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 82 [2021-12-16 03:59:29,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:59:29,849 INFO L225 Difference]: With dead ends: 4425 [2021-12-16 03:59:29,849 INFO L226 Difference]: Without dead ends: 3063 [2021-12-16 03:59:29,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:59:29,860 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 1460 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 307 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 4069 SdHoareTripleChecker+Invalid, 1722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-16 03:59:29,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 4069 Invalid, 1722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 1414 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-12-16 03:59:29,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2021-12-16 03:59:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 2799. [2021-12-16 03:59:29,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2229 states have (on average 1.4262000897263347) internal successors, (3179), 2267 states have internal predecessors, (3179), 421 states have call successors, (421), 141 states have call predecessors, (421), 148 states have return successors, (464), 422 states have call predecessors, (464), 420 states have call successors, (464) [2021-12-16 03:59:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4064 transitions. [2021-12-16 03:59:29,999 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4064 transitions. Word has length 82 [2021-12-16 03:59:30,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:59:30,002 INFO L470 AbstractCegarLoop]: Abstraction has 2799 states and 4064 transitions. [2021-12-16 03:59:30,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-16 03:59:30,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4064 transitions. [2021-12-16 03:59:30,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-16 03:59:30,015 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:59:30,016 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-12-16 03:59:30,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:59:30,017 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:59:30,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:59:30,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2115293044, now seen corresponding path program 1 times [2021-12-16 03:59:30,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:59:30,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208643306] [2021-12-16 03:59:30,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:59:30,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:59:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:59:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:59:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:59:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:59:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:59:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:59:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:59:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:59:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:59:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:59:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 03:59:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:59:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:59:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:59:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:59:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:59:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:59:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-16 03:59:30,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:59:30,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208643306] [2021-12-16 03:59:30,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208643306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:59:30,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:59:30,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:59:30,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714711055] [2021-12-16 03:59:30,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:59:30,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:59:30,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:59:30,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:59:30,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:59:30,270 INFO L87 Difference]: Start difference. First operand 2799 states and 4064 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 03:59:34,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:59:36,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:59:36,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:59:36,453 INFO L93 Difference]: Finished difference Result 7425 states and 10855 transitions. [2021-12-16 03:59:36,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:59:36,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2021-12-16 03:59:36,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:59:36,476 INFO L225 Difference]: With dead ends: 7425 [2021-12-16 03:59:36,477 INFO L226 Difference]: Without dead ends: 4650 [2021-12-16 03:59:36,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:59:36,485 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 1955 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 771 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-16 03:59:36,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2029 Valid, 2422 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 1288 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-12-16 03:59:36,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4650 states. [2021-12-16 03:59:36,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4650 to 4161. [2021-12-16 03:59:36,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4161 states, 3313 states have (on average 1.43284032598853) internal successors, (4747), 3367 states have internal predecessors, (4747), 613 states have call successors, (613), 213 states have call predecessors, (613), 234 states have return successors, (696), 618 states have call predecessors, (696), 612 states have call successors, (696) [2021-12-16 03:59:36,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 6056 transitions. [2021-12-16 03:59:36,653 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 6056 transitions. Word has length 140 [2021-12-16 03:59:36,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:59:36,656 INFO L470 AbstractCegarLoop]: Abstraction has 4161 states and 6056 transitions. [2021-12-16 03:59:36,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 03:59:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 6056 transitions. [2021-12-16 03:59:36,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-16 03:59:36,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:59:36,669 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:59:36,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:59:36,669 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:59:36,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:59:36,670 INFO L85 PathProgramCache]: Analyzing trace with hash 840633849, now seen corresponding path program 1 times [2021-12-16 03:59:36,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:59:36,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189408506] [2021-12-16 03:59:36,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:59:36,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:59:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:59:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:59:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:59:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:59:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:59:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:59:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:59:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:59:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:59:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:59:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 03:59:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:59:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:59:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:59:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:59:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:59:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 03:59:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 03:59:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:59:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:59:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 03:59:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 03:59:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:36,928 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-12-16 03:59:36,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:59:36,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189408506] [2021-12-16 03:59:36,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189408506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:59:36,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:59:36,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:59:36,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681735795] [2021-12-16 03:59:36,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:59:36,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:59:36,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:59:36,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:59:36,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:59:36,932 INFO L87 Difference]: Start difference. First operand 4161 states and 6056 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:59:40,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:59:42,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:59:44,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:59:46,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:59:47,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:59:47,209 INFO L93 Difference]: Finished difference Result 10882 states and 15769 transitions. [2021-12-16 03:59:47,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:59:47,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 169 [2021-12-16 03:59:47,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:59:47,246 INFO L225 Difference]: With dead ends: 10882 [2021-12-16 03:59:47,247 INFO L226 Difference]: Without dead ends: 6745 [2021-12-16 03:59:47,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:59:47,263 INFO L933 BasicCegarLoop]: 1467 mSDtfsCounter, 1247 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 371 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 3423 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:59:47,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 3423 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 1334 Invalid, 4 Unknown, 0 Unchecked, 10.0s Time] [2021-12-16 03:59:47,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6745 states. [2021-12-16 03:59:47,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6745 to 6110. [2021-12-16 03:59:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6110 states, 4891 states have (on average 1.418523819259865) internal successors, (6938), 4975 states have internal predecessors, (6938), 848 states have call successors, (848), 335 states have call predecessors, (848), 370 states have return successors, (977), 859 states have call predecessors, (977), 847 states have call successors, (977) [2021-12-16 03:59:47,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6110 states to 6110 states and 8763 transitions. [2021-12-16 03:59:47,547 INFO L78 Accepts]: Start accepts. Automaton has 6110 states and 8763 transitions. Word has length 169 [2021-12-16 03:59:47,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:59:47,547 INFO L470 AbstractCegarLoop]: Abstraction has 6110 states and 8763 transitions. [2021-12-16 03:59:47,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:59:47,548 INFO L276 IsEmpty]: Start isEmpty. Operand 6110 states and 8763 transitions. [2021-12-16 03:59:47,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 03:59:47,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:59:47,560 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:59:47,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:59:47,561 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:59:47,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:59:47,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1912369058, now seen corresponding path program 1 times [2021-12-16 03:59:47,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:59:47,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697616614] [2021-12-16 03:59:47,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:59:47,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:59:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:59:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:59:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:59:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:59:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:59:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:59:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:59:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:59:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:59:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:59:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:59:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 03:59:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 03:59:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:59:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:59:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:59:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:59:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:59:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:59:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:47,793 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-12-16 03:59:47,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:59:47,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697616614] [2021-12-16 03:59:47,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697616614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:59:47,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:59:47,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:59:47,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645792348] [2021-12-16 03:59:47,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:59:47,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:59:47,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:59:47,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:59:47,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:59:47,796 INFO L87 Difference]: Start difference. First operand 6110 states and 8763 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-16 03:59:51,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:59:54,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:59:54,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:59:54,105 INFO L93 Difference]: Finished difference Result 15870 states and 22783 transitions. [2021-12-16 03:59:54,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:59:54,106 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 163 [2021-12-16 03:59:54,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:59:54,154 INFO L225 Difference]: With dead ends: 15870 [2021-12-16 03:59:54,155 INFO L226 Difference]: Without dead ends: 9795 [2021-12-16 03:59:54,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:59:54,177 INFO L933 BasicCegarLoop]: 991 mSDtfsCounter, 2851 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1126 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2926 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1126 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:59:54,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2926 Valid, 2436 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1126 Valid, 1408 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-12-16 03:59:54,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9795 states. [2021-12-16 03:59:54,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9795 to 8838. [2021-12-16 03:59:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8838 states, 7071 states have (on average 1.410550134351577) internal successors, (9974), 7191 states have internal predecessors, (9974), 1184 states have call successors, (1184), 525 states have call predecessors, (1184), 582 states have return successors, (1368), 1201 states have call predecessors, (1368), 1183 states have call successors, (1368) [2021-12-16 03:59:54,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8838 states to 8838 states and 12526 transitions. [2021-12-16 03:59:54,534 INFO L78 Accepts]: Start accepts. Automaton has 8838 states and 12526 transitions. Word has length 163 [2021-12-16 03:59:54,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:59:54,536 INFO L470 AbstractCegarLoop]: Abstraction has 8838 states and 12526 transitions. [2021-12-16 03:59:54,536 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-16 03:59:54,537 INFO L276 IsEmpty]: Start isEmpty. Operand 8838 states and 12526 transitions. [2021-12-16 03:59:54,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-16 03:59:54,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:59:54,550 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:59:54,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:59:54,551 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:59:54,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:59:54,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1253354754, now seen corresponding path program 1 times [2021-12-16 03:59:54,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:59:54,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823087712] [2021-12-16 03:59:54,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:59:54,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:59:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:59:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:59:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:59:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:59:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:59:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:59:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:59:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:59:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:59:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:59:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:59:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 03:59:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 03:59:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:59:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:59:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:59:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:59:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:59:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:59:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:59:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:59:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-12-16 03:59:54,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:59:54,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823087712] [2021-12-16 03:59:54,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823087712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:59:54,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:59:54,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:59:54,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694119520] [2021-12-16 03:59:54,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:59:54,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:59:54,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:59:54,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:59:54,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:59:54,889 INFO L87 Difference]: Start difference. First operand 8838 states and 12526 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-16 03:59:58,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:00:00,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:00:02,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:00:02,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:00:02,757 INFO L93 Difference]: Finished difference Result 14382 states and 20629 transitions. [2021-12-16 04:00:02,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:00:02,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 168 [2021-12-16 04:00:02,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:00:02,850 INFO L225 Difference]: With dead ends: 14382 [2021-12-16 04:00:02,850 INFO L226 Difference]: Without dead ends: 9802 [2021-12-16 04:00:02,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-16 04:00:02,865 INFO L933 BasicCegarLoop]: 936 mSDtfsCounter, 918 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 449 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-16 04:00:02,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 2819 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 1253 Invalid, 3 Unknown, 0 Unchecked, 7.6s Time] [2021-12-16 04:00:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9802 states. [2021-12-16 04:00:03,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9802 to 8858. [2021-12-16 04:00:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8858 states, 7091 states have (on average 1.4093921872796502) internal successors, (9994), 7211 states have internal predecessors, (9994), 1184 states have call successors, (1184), 525 states have call predecessors, (1184), 582 states have return successors, (1368), 1201 states have call predecessors, (1368), 1183 states have call successors, (1368) [2021-12-16 04:00:03,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8858 states to 8858 states and 12546 transitions. [2021-12-16 04:00:03,142 INFO L78 Accepts]: Start accepts. Automaton has 8858 states and 12546 transitions. Word has length 168 [2021-12-16 04:00:03,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:00:03,142 INFO L470 AbstractCegarLoop]: Abstraction has 8858 states and 12546 transitions. [2021-12-16 04:00:03,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-16 04:00:03,143 INFO L276 IsEmpty]: Start isEmpty. Operand 8858 states and 12546 transitions. [2021-12-16 04:00:03,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-16 04:00:03,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:00:03,155 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:00:03,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 04:00:03,155 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:00:03,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:00:03,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1255892641, now seen corresponding path program 1 times [2021-12-16 04:00:03,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:00:03,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636191705] [2021-12-16 04:00:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:00:03,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:00:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:00:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:00:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:00:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:00:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:00:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:00:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:00:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:00:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:00:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 04:00:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 04:00:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 04:00:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 04:00:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:00:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 04:00:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 04:00:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:00:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:00:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:00:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 04:00:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2021-12-16 04:00:03,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:00:03,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636191705] [2021-12-16 04:00:03,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636191705] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 04:00:03,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880730533] [2021-12-16 04:00:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:00:03,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 04:00:03,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 04:00:03,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 04:00:03,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 04:00:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:03,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 04:00:03,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 04:00:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 89 proven. 5 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-12-16 04:00:04,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 04:00:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-12-16 04:00:05,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880730533] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 04:00:05,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 04:00:05,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 17 [2021-12-16 04:00:05,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240995849] [2021-12-16 04:00:05,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 04:00:05,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 04:00:05,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:00:05,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 04:00:05,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-12-16 04:00:05,398 INFO L87 Difference]: Start difference. First operand 8858 states and 12546 transitions. Second operand has 17 states, 16 states have (on average 11.3125) internal successors, (181), 13 states have internal predecessors, (181), 8 states have call successors, (48), 9 states have call predecessors, (48), 6 states have return successors, (38), 7 states have call predecessors, (38), 8 states have call successors, (38) [2021-12-16 04:00:12,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:00:14,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []