./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.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_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.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 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:57:20,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:57:20,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:57:20,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:57:20,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:57:20,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:57:20,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:57:20,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:57:20,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:57:20,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:57:20,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:57:20,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:57:20,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:57:20,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:57:20,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:57:20,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:57:20,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:57:20,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:57:20,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:57:20,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:57:20,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:57:20,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:57:20,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:57:20,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:57:20,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:57:20,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:57:20,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:57:20,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:57:20,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:57:20,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:57:20,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:57:20,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:57:20,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:57:20,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:57:20,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:57:20,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:57:20,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:57:20,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:57:20,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:57:20,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:57:20,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:57:20,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:57:20,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:57:20,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:57:20,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:57:20,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:57:20,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:57:20,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:57:20,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:57:20,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:57:20,768 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:57:20,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:57:20,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:57:20,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:57:20,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:57:20,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:57:20,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:57:20,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:57:20,770 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:57:20,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:57:20,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:57:20,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:57:20,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:57:20,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:57:20,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:57:20,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:57:20,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:57:20,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:57:20,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:57:20,772 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:57:20,772 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:57:20,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:57:20,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:57:20,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc [2021-12-16 03:57:20,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:57:21,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:57:21,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:57:21,013 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:57:21,013 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:57:21,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-12-16 03:57:21,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/809cb548d/8bba432744da4385972b2459a752fdcd/FLAGd683ef55e [2021-12-16 03:57:21,761 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:57:21,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-12-16 03:57:21,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/809cb548d/8bba432744da4385972b2459a752fdcd/FLAGd683ef55e [2021-12-16 03:57:21,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/809cb548d/8bba432744da4385972b2459a752fdcd [2021-12-16 03:57:21,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:57:21,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:57:21,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:57:21,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:57:21,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:57:21,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:57:21" (1/1) ... [2021-12-16 03:57:21,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@136b8ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:21, skipping insertion in model container [2021-12-16 03:57:21,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:57:21" (1/1) ... [2021-12-16 03:57:21,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:57:22,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:57:22,849 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_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-12-16 03:57:23,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:57:23,511 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:57:23,610 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_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-12-16 03:57:23,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:57:23,911 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:57:23,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:23 WrapperNode [2021-12-16 03:57:23,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:57:23,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:57:23,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:57:23,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:57:23,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:23" (1/1) ... [2021-12-16 03:57:23,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:23" (1/1) ... [2021-12-16 03:57:24,078 INFO L137 Inliner]: procedures = 220, calls = 1799, calls flagged for inlining = 81, calls inlined = 72, statements flattened = 3206 [2021-12-16 03:57:24,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:57:24,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:57:24,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:57:24,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:57:24,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:23" (1/1) ... [2021-12-16 03:57:24,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:23" (1/1) ... [2021-12-16 03:57:24,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:23" (1/1) ... [2021-12-16 03:57:24,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:23" (1/1) ... [2021-12-16 03:57:24,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:23" (1/1) ... [2021-12-16 03:57:24,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:23" (1/1) ... [2021-12-16 03:57:24,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:23" (1/1) ... [2021-12-16 03:57:24,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:57:24,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:57:24,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:57:24,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:57:24,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:23" (1/1) ... [2021-12-16 03:57:24,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:57:24,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:57:24,313 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 03:57:24,362 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 03:57:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure nla_get_u32 [2021-12-16 03:57:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_get_u32 [2021-12-16 03:57:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_xmit [2021-12-16 03:57:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_xmit [2021-12-16 03:57:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 03:57:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 03:57:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 03:57:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 03:57:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure nla_put_u32 [2021-12-16 03:57:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_put_u32 [2021-12-16 03:57:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_start_tx [2021-12-16 03:57:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_start_tx [2021-12-16 03:57:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 03:57:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 03:57:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-12-16 03:57:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-12-16 03:57:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_bits [2021-12-16 03:57:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_bits [2021-12-16 03:57:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-12-16 03:57:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-12-16 03:57:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-16 03:57:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-16 03:57:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2021-12-16 03:57:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2021-12-16 03:57:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 03:57:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 03:57:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2021-12-16 03:57:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2021-12-16 03:57:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-16 03:57:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-16 03:57:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-16 03:57:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-16 03:57:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:57:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:57:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-16 03:57:24,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-16 03:57:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-16 03:57:24,391 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-16 03:57:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_fill_info [2021-12-16 03:57:24,391 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_fill_info [2021-12-16 03:57:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:57:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-16 03:57:24,391 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-16 03:57:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_desc [2021-12-16 03:57:24,392 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_desc [2021-12-16 03:57:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_update_aggregation_stats [2021-12-16 03:57:24,392 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_update_aggregation_stats [2021-12-16 03:57:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:57:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-16 03:57:24,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-16 03:57:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:57:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_tx_frm [2021-12-16 03:57:24,393 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_tx_frm [2021-12-16 03:57:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:57:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-16 03:57:24,394 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-16 03:57:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_dequeue [2021-12-16 03:57:24,395 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_dequeue [2021-12-16 03:57:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-16 03:57:24,396 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-16 03:57:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-16 03:57:24,396 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-16 03:57:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-16 03:57:24,396 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-16 03:57:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_desc_len [2021-12-16 03:57:24,396 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_desc_len [2021-12-16 03:57:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 03:57:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-16 03:57:24,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-16 03:57:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_tx_queue_len [2021-12-16 03:57:24,397 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_tx_queue_len [2021-12-16 03:57:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-16 03:57:24,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-16 03:57:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 03:57:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-16 03:57:24,398 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-16 03:57:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:57:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_21 [2021-12-16 03:57:24,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_21 [2021-12-16 03:57:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-16 03:57:24,399 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-16 03:57:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 03:57:24,399 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 03:57:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-16 03:57:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-16 03:57:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-16 03:57:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-16 03:57:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_get_size [2021-12-16 03:57:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_get_size [2021-12-16 03:57:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_netlink_parms [2021-12-16 03:57:24,401 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_netlink_parms [2021-12-16 03:57:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-12-16 03:57:24,401 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-12-16 03:57:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 03:57:24,402 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 03:57:24,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:57:24,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 03:57:24,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 03:57:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:57:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-16 03:57:24,403 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-16 03:57:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-16 03:57:24,404 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-16 03:57:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2021-12-16 03:57:24,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2021-12-16 03:57:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:57:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-16 03:57:24,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-16 03:57:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_changelink [2021-12-16 03:57:24,405 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_changelink [2021-12-16 03:57:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:57:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-16 03:57:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-16 03:57:24,405 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-16 03:57:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-16 03:57:24,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-16 03:57:24,406 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-12-16 03:57:24,406 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-12-16 03:57:24,407 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_open [2021-12-16 03:57:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_open [2021-12-16 03:57:24,409 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_done [2021-12-16 03:57:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_done [2021-12-16 03:57:24,409 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-16 03:57:24,410 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-16 03:57:24,410 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_is_locked [2021-12-16 03:57:24,411 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_is_locked [2021-12-16 03:57:24,411 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-16 03:57:24,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-16 03:57:24,417 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_can_send_aggregate [2021-12-16 03:57:24,417 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_can_send_aggregate [2021-12-16 03:57:24,417 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-16 03:57:24,417 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-16 03:57:24,418 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-16 03:57:24,418 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-16 03:57:24,418 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-16 03:57:24,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-16 03:57:24,418 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-12-16 03:57:24,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-12-16 03:57:24,418 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-16 03:57:24,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-16 03:57:24,419 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-16 03:57:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-16 03:57:24,419 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_newlink [2021-12-16 03:57:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_newlink [2021-12-16 03:57:24,419 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-16 03:57:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-16 03:57:24,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:57:24,419 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-12-16 03:57:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-12-16 03:57:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_close [2021-12-16 03:57:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_close [2021-12-16 03:57:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-12-16 03:57:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-12-16 03:57:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_abort_tx [2021-12-16 03:57:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_abort_tx [2021-12-16 03:57:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-16 03:57:24,421 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-16 03:57:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:57:24,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:57:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-16 03:57:24,421 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-16 03:57:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-12-16 03:57:24,421 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-12-16 03:57:24,984 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:57:24,987 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:57:25,443 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 03:57:27,161 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:57:27,179 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:57:27,179 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-16 03:57:27,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:57:27 BoogieIcfgContainer [2021-12-16 03:57:27,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:57:27,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:57:27,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:57:27,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:57:27,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:57:21" (1/3) ... [2021-12-16 03:57:27,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32522ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:57:27, skipping insertion in model container [2021-12-16 03:57:27,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:23" (2/3) ... [2021-12-16 03:57:27,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32522ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:57:27, skipping insertion in model container [2021-12-16 03:57:27,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:57:27" (3/3) ... [2021-12-16 03:57:27,190 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-12-16 03:57:27,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:57:27,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:57:27,243 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:57:27,256 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 03:57:27,256 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:57:27,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 1077 states, 748 states have (on average 1.3302139037433156) internal successors, (995), 767 states have internal predecessors, (995), 255 states have call successors, (255), 73 states have call predecessors, (255), 72 states have return successors, (251), 251 states have call predecessors, (251), 251 states have call successors, (251) [2021-12-16 03:57:27,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-16 03:57:27,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:57:27,322 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 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 03:57:27,322 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:57:27,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:57:27,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1207697296, now seen corresponding path program 1 times [2021-12-16 03:57:27,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:57:27,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891440558] [2021-12-16 03:57:27,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:27,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:57:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:27,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:27,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:57:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 03:57:27,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:57:27,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891440558] [2021-12-16 03:57:27,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891440558] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:57:27,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:57:27,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:57:27,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775527554] [2021-12-16 03:57:27,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:57:27,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:57:27,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:57:27,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:57:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:57:27,880 INFO L87 Difference]: Start difference. First operand has 1077 states, 748 states have (on average 1.3302139037433156) internal successors, (995), 767 states have internal predecessors, (995), 255 states have call successors, (255), 73 states have call predecessors, (255), 72 states have return successors, (251), 251 states have call predecessors, (251), 251 states have call successors, (251) Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 03:57:31,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:57:31,581 INFO L93 Difference]: Finished difference Result 3524 states and 5199 transitions. [2021-12-16 03:57:31,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:57:31,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-12-16 03:57:31,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:57:31,614 INFO L225 Difference]: With dead ends: 3524 [2021-12-16 03:57:31,615 INFO L226 Difference]: Without dead ends: 2417 [2021-12-16 03:57:31,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:57:31,643 INFO L933 BasicCegarLoop]: 1789 mSDtfsCounter, 2066 mSDsluCounter, 5356 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:57:31,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2260 Valid, 7145 Invalid, 2573 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [752 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-16 03:57:31,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2021-12-16 03:57:31,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2213. [2021-12-16 03:57:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 1544 states have (on average 1.3180051813471503) internal successors, (2035), 1577 states have internal predecessors, (2035), 518 states have call successors, (518), 141 states have call predecessors, (518), 150 states have return successors, (587), 523 states have call predecessors, (587), 517 states have call successors, (587) [2021-12-16 03:57:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 3140 transitions. [2021-12-16 03:57:31,857 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 3140 transitions. Word has length 39 [2021-12-16 03:57:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:57:31,858 INFO L470 AbstractCegarLoop]: Abstraction has 2213 states and 3140 transitions. [2021-12-16 03:57:31,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 03:57:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 3140 transitions. [2021-12-16 03:57:31,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-16 03:57:31,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:57:31,878 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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 03:57:31,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:57:31,879 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:57:31,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:57:31,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1372830722, now seen corresponding path program 1 times [2021-12-16 03:57:31,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:57:31,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671974558] [2021-12-16 03:57:31,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:31,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:57:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:57:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:57:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:57:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:57:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 03:57:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:57:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 03:57:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 03:57:32,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:57:32,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671974558] [2021-12-16 03:57:32,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671974558] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:57:32,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:57:32,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 03:57:32,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102962997] [2021-12-16 03:57:32,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:57:32,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 03:57:32,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:57:32,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 03:57:32,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:57:32,578 INFO L87 Difference]: Start difference. First operand 2213 states and 3140 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 03:57:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:57:37,700 INFO L93 Difference]: Finished difference Result 4788 states and 7042 transitions. [2021-12-16 03:57:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-16 03:57:37,701 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2021-12-16 03:57:37,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:57:37,719 INFO L225 Difference]: With dead ends: 4788 [2021-12-16 03:57:37,720 INFO L226 Difference]: Without dead ends: 2585 [2021-12-16 03:57:37,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-12-16 03:57:37,733 INFO L933 BasicCegarLoop]: 1459 mSDtfsCounter, 481 mSDsluCounter, 9892 mSDsCounter, 0 mSdLazyCounter, 3826 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 11351 SdHoareTripleChecker+Invalid, 4177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 3826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:57:37,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 11351 Invalid, 4177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 3826 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-16 03:57:37,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2021-12-16 03:57:37,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2241. [2021-12-16 03:57:37,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 1566 states have (on average 1.3148148148148149) internal successors, (2059), 1600 states have internal predecessors, (2059), 518 states have call successors, (518), 141 states have call predecessors, (518), 156 states have return successors, (612), 528 states have call predecessors, (612), 517 states have call successors, (612) [2021-12-16 03:57:37,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 3189 transitions. [2021-12-16 03:57:37,867 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 3189 transitions. Word has length 126 [2021-12-16 03:57:37,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:57:37,869 INFO L470 AbstractCegarLoop]: Abstraction has 2241 states and 3189 transitions. [2021-12-16 03:57:37,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 03:57:37,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 3189 transitions. [2021-12-16 03:57:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-16 03:57:37,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:57:37,880 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2021-12-16 03:57:37,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:57:37,880 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:57:37,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:57:37,881 INFO L85 PathProgramCache]: Analyzing trace with hash 828082038, now seen corresponding path program 1 times [2021-12-16 03:57:37,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:57:37,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968314999] [2021-12-16 03:57:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:37,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:57:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:57:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:57:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:57:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:57:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:57:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 03:57:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 03:57:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-16 03:57:38,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:57:38,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968314999] [2021-12-16 03:57:38,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968314999] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:57:38,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674804899] [2021-12-16 03:57:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:38,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:57:38,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:57:38,303 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 03:57:38,305 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 03:57:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:38,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:57:38,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:57:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 03:57:39,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:57:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-16 03:57:39,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674804899] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:57:39,425 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:57:39,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 9 [2021-12-16 03:57:39,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916568648] [2021-12-16 03:57:39,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:57:39,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:57:39,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:57:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:57:39,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:57:39,429 INFO L87 Difference]: Start difference. First operand 2241 states and 3189 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 4 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-16 03:57:43,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:57:43,600 INFO L93 Difference]: Finished difference Result 4892 states and 7224 transitions. [2021-12-16 03:57:43,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 03:57:43,601 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 4 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 127 [2021-12-16 03:57:43,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:57:43,622 INFO L225 Difference]: With dead ends: 4892 [2021-12-16 03:57:43,622 INFO L226 Difference]: Without dead ends: 2661 [2021-12-16 03:57:43,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:57:43,642 INFO L933 BasicCegarLoop]: 1491 mSDtfsCounter, 511 mSDsluCounter, 3696 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 5187 SdHoareTripleChecker+Invalid, 2294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-16 03:57:43,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 5187 Invalid, 2294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-16 03:57:43,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2021-12-16 03:57:43,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 2313. [2021-12-16 03:57:43,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 1630 states have (on average 1.3061349693251534) internal successors, (2129), 1657 states have internal predecessors, (2129), 526 states have call successors, (526), 141 states have call predecessors, (526), 156 states have return successors, (639), 543 states have call predecessors, (639), 525 states have call successors, (639) [2021-12-16 03:57:43,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3294 transitions. [2021-12-16 03:57:43,799 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3294 transitions. Word has length 127 [2021-12-16 03:57:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:57:43,799 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 3294 transitions. [2021-12-16 03:57:43,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 4 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-16 03:57:43,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3294 transitions. [2021-12-16 03:57:43,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-16 03:57:43,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:57:43,810 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:57:43,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 03:57:44,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:57:44,014 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:57:44,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:57:44,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1635970812, now seen corresponding path program 1 times [2021-12-16 03:57:44,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:57:44,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236493516] [2021-12-16 03:57:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:44,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:57:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:57:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:57:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:57:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:57:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:57:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 03:57:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 03:57:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-16 03:57:44,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:57:44,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236493516] [2021-12-16 03:57:44,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236493516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:57:44,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:57:44,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:57:44,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17996678] [2021-12-16 03:57:44,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:57:44,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:57:44,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:57:44,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:57:44,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:57:44,414 INFO L87 Difference]: Start difference. First operand 2313 states and 3294 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 03:57:46,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:57:46,817 INFO L93 Difference]: Finished difference Result 4962 states and 7246 transitions. [2021-12-16 03:57:46,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:57:46,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2021-12-16 03:57:46,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:57:46,839 INFO L225 Difference]: With dead ends: 4962 [2021-12-16 03:57:46,840 INFO L226 Difference]: Without dead ends: 2659 [2021-12-16 03:57:46,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:57:46,853 INFO L933 BasicCegarLoop]: 1502 mSDtfsCounter, 788 mSDsluCounter, 4523 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 6025 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:57:46,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 6025 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-16 03:57:46,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2021-12-16 03:57:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2321. [2021-12-16 03:57:46,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 1636 states have (on average 1.3050122249388754) internal successors, (2135), 1663 states have internal predecessors, (2135), 526 states have call successors, (526), 141 states have call predecessors, (526), 158 states have return successors, (646), 545 states have call predecessors, (646), 525 states have call successors, (646) [2021-12-16 03:57:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3307 transitions. [2021-12-16 03:57:46,957 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3307 transitions. Word has length 136 [2021-12-16 03:57:46,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:57:46,958 INFO L470 AbstractCegarLoop]: Abstraction has 2321 states and 3307 transitions. [2021-12-16 03:57:46,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 03:57:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3307 transitions. [2021-12-16 03:57:46,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-16 03:57:46,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:57:46,967 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:57:46,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:57:46,967 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:57:46,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:57:46,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1662680216, now seen corresponding path program 1 times [2021-12-16 03:57:46,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:57:46,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671749139] [2021-12-16 03:57:46,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:46,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:57:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:57:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 03:57:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:57:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:57:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:57:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 03:57:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 03:57:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:57:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-16 03:57:47,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:57:47,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671749139] [2021-12-16 03:57:47,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671749139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:57:47,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:57:47,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:57:47,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380196316] [2021-12-16 03:57:47,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:57:47,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:57:47,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:57:47,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:57:47,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:57:47,270 INFO L87 Difference]: Start difference. First operand 2321 states and 3307 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 03:57:49,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:57:49,387 INFO L93 Difference]: Finished difference Result 4962 states and 7240 transitions. [2021-12-16 03:57:49,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:57:49,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 141 [2021-12-16 03:57:49,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:57:49,407 INFO L225 Difference]: With dead ends: 4962 [2021-12-16 03:57:49,407 INFO L226 Difference]: Without dead ends: 2651 [2021-12-16 03:57:49,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:57:49,422 INFO L933 BasicCegarLoop]: 1494 mSDtfsCounter, 1117 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 982 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 982 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:57:49,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 3450 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [982 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-16 03:57:49,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2021-12-16 03:57:49,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2323. [2021-12-16 03:57:49,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 1638 states have (on average 1.3046398046398047) internal successors, (2137), 1665 states have internal predecessors, (2137), 526 states have call successors, (526), 141 states have call predecessors, (526), 158 states have return successors, (646), 545 states have call predecessors, (646), 525 states have call successors, (646) [2021-12-16 03:57:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3309 transitions. [2021-12-16 03:57:49,532 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3309 transitions. Word has length 141 [2021-12-16 03:57:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:57:49,532 INFO L470 AbstractCegarLoop]: Abstraction has 2323 states and 3309 transitions. [2021-12-16 03:57:49,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 03:57:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3309 transitions. [2021-12-16 03:57:49,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-16 03:57:49,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:57:49,541 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:57:49,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:57:49,541 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:57:49,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:57:49,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1313911595, now seen corresponding path program 1 times [2021-12-16 03:57:49,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:57:49,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119657028] [2021-12-16 03:57:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:49,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:57:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:57:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 03:57:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:57:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:57:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:57:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 03:57:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:57:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 03:57:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-16 03:57:49,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:57:49,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119657028] [2021-12-16 03:57:49,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119657028] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:57:49,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552252884] [2021-12-16 03:57:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:49,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:57:49,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:57:49,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:57:49,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:57:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:50,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 03:57:50,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:57:50,772 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-16 03:57:50,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:57:50,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552252884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:57:50,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:57:50,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-16 03:57:50,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178120502] [2021-12-16 03:57:50,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:57:50,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:57:50,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:57:50,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:57:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:57:50,775 INFO L87 Difference]: Start difference. First operand 2323 states and 3309 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-16 03:57:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:57:50,854 INFO L93 Difference]: Finished difference Result 4686 states and 6733 transitions. [2021-12-16 03:57:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:57:50,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 144 [2021-12-16 03:57:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:57:50,868 INFO L225 Difference]: With dead ends: 4686 [2021-12-16 03:57:50,868 INFO L226 Difference]: Without dead ends: 2373 [2021-12-16 03:57:50,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:57:50,879 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 13 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:57:50,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2995 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:57:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2021-12-16 03:57:50,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2325. [2021-12-16 03:57:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2325 states, 1640 states have (on average 1.3042682926829268) internal successors, (2139), 1667 states have internal predecessors, (2139), 526 states have call successors, (526), 141 states have call predecessors, (526), 158 states have return successors, (646), 545 states have call predecessors, (646), 525 states have call successors, (646) [2021-12-16 03:57:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 3311 transitions. [2021-12-16 03:57:50,972 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 3311 transitions. Word has length 144 [2021-12-16 03:57:50,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:57:50,973 INFO L470 AbstractCegarLoop]: Abstraction has 2325 states and 3311 transitions. [2021-12-16 03:57:50,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-16 03:57:50,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 3311 transitions. [2021-12-16 03:57:50,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-16 03:57:50,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:57:50,984 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:57:51,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:57:51,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-16 03:57:51,208 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:57:51,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:57:51,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1432107075, now seen corresponding path program 1 times [2021-12-16 03:57:51,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:57:51,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430158426] [2021-12-16 03:57:51,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:51,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:57:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:57:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 03:57:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:57:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:57:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:57:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:57:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:57:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:57:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-16 03:57:51,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:57:51,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430158426] [2021-12-16 03:57:51,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430158426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:57:51,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:57:51,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:57:51,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294930916] [2021-12-16 03:57:51,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:57:51,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:57:51,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:57:51,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:57:51,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:57:51,558 INFO L87 Difference]: Start difference. First operand 2325 states and 3311 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 03:57:53,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:57:53,808 INFO L93 Difference]: Finished difference Result 5004 states and 7316 transitions. [2021-12-16 03:57:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:57:53,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 147 [2021-12-16 03:57:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:57:53,824 INFO L225 Difference]: With dead ends: 5004 [2021-12-16 03:57:53,825 INFO L226 Difference]: Without dead ends: 2689 [2021-12-16 03:57:53,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:57:53,836 INFO L933 BasicCegarLoop]: 1489 mSDtfsCounter, 812 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:57:53,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 3402 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-16 03:57:53,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2021-12-16 03:57:53,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2337. [2021-12-16 03:57:53,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 1650 states have (on average 1.304848484848485) internal successors, (2153), 1677 states have internal predecessors, (2153), 528 states have call successors, (528), 141 states have call predecessors, (528), 158 states have return successors, (650), 547 states have call predecessors, (650), 527 states have call successors, (650) [2021-12-16 03:57:53,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3331 transitions. [2021-12-16 03:57:53,955 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3331 transitions. Word has length 147 [2021-12-16 03:57:53,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:57:53,956 INFO L470 AbstractCegarLoop]: Abstraction has 2337 states and 3331 transitions. [2021-12-16 03:57:53,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 03:57:53,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3331 transitions. [2021-12-16 03:57:53,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-16 03:57:53,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:57:53,965 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:53,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:57:53,966 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:57:53,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:57:53,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1266616076, now seen corresponding path program 1 times [2021-12-16 03:57:53,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:57:53,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340590565] [2021-12-16 03:57:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:53,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:57:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:57:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 03:57:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:57:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 03:57:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 03:57:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:57:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:57:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:57:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:57:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:57:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:57:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:57:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 03:57:54,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:57:54,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340590565] [2021-12-16 03:57:54,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340590565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:57:54,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:57:54,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:57:54,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309767006] [2021-12-16 03:57:54,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:57:54,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:57:54,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:57:54,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:57:54,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:57:54,263 INFO L87 Difference]: Start difference. First operand 2337 states and 3331 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-16 03:57:58,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:57:58,196 INFO L93 Difference]: Finished difference Result 6721 states and 9680 transitions. [2021-12-16 03:57:58,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:57:58,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 162 [2021-12-16 03:57:58,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:57:58,221 INFO L225 Difference]: With dead ends: 6721 [2021-12-16 03:57:58,221 INFO L226 Difference]: Without dead ends: 4394 [2021-12-16 03:57:58,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:57:58,233 INFO L933 BasicCegarLoop]: 1611 mSDtfsCounter, 2725 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 1568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2886 SdHoareTripleChecker+Valid, 4160 SdHoareTripleChecker+Invalid, 3357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1568 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-16 03:57:58,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2886 Valid, 4160 Invalid, 3357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1568 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-16 03:57:58,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2021-12-16 03:57:58,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 3830. [2021-12-16 03:57:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3830 states, 2764 states have (on average 1.3140376266280753) internal successors, (3632), 2801 states have internal predecessors, (3632), 799 states have call successors, (799), 235 states have call predecessors, (799), 266 states have return successors, (994), 836 states have call predecessors, (994), 798 states have call successors, (994) [2021-12-16 03:57:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3830 states to 3830 states and 5425 transitions. [2021-12-16 03:57:58,392 INFO L78 Accepts]: Start accepts. Automaton has 3830 states and 5425 transitions. Word has length 162 [2021-12-16 03:57:58,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:57:58,392 INFO L470 AbstractCegarLoop]: Abstraction has 3830 states and 5425 transitions. [2021-12-16 03:57:58,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-16 03:57:58,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3830 states and 5425 transitions. [2021-12-16 03:57:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-16 03:57:58,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:57:58,403 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:57:58,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 03:57:58,404 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:57:58,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:57:58,404 INFO L85 PathProgramCache]: Analyzing trace with hash -300217313, now seen corresponding path program 1 times [2021-12-16 03:57:58,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:57:58,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189225238] [2021-12-16 03:57:58,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:58,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:57:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:57:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 03:57:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:57:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:57:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:57:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 03:57:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 03:57:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:57:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:57:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:58,758 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 03:57:58,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:57:58,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189225238] [2021-12-16 03:57:58,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189225238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:57:58,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:57:58,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:57:58,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189517534] [2021-12-16 03:57:58,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:57:58,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:57:58,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:57:58,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:57:58,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:57:58,761 INFO L87 Difference]: Start difference. First operand 3830 states and 5425 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 03:58:01,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:58:01,506 INFO L93 Difference]: Finished difference Result 8092 states and 11694 transitions. [2021-12-16 03:58:01,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:58:01,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2021-12-16 03:58:01,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:58:01,533 INFO L225 Difference]: With dead ends: 8092 [2021-12-16 03:58:01,533 INFO L226 Difference]: Without dead ends: 4272 [2021-12-16 03:58:01,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:58:01,550 INFO L933 BasicCegarLoop]: 1488 mSDtfsCounter, 471 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 3871 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:58:01,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 3871 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-16 03:58:01,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2021-12-16 03:58:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 3846. [2021-12-16 03:58:01,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 2780 states have (on average 1.3122302158273382) internal successors, (3648), 2817 states have internal predecessors, (3648), 799 states have call successors, (799), 235 states have call predecessors, (799), 266 states have return successors, (994), 836 states have call predecessors, (994), 798 states have call successors, (994) [2021-12-16 03:58:01,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 5441 transitions. [2021-12-16 03:58:01,748 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 5441 transitions. Word has length 151 [2021-12-16 03:58:01,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:58:01,749 INFO L470 AbstractCegarLoop]: Abstraction has 3846 states and 5441 transitions. [2021-12-16 03:58:01,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 03:58:01,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 5441 transitions. [2021-12-16 03:58:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 03:58:01,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:58:01,759 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:58:01,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 03:58:01,759 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:58:01,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:58:01,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1408103459, now seen corresponding path program 1 times [2021-12-16 03:58:01,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:58:01,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027018957] [2021-12-16 03:58:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:58:01,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:58:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:01,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:58:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:01,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:58:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:01,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:58:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:01,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:58:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:58:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:01,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:58:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:58:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:58:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:02,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:58:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:02,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:58:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:58:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:02,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:58:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:58:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:02,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:58:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:02,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 03:58:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:58:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 03:58:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:02,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:58:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:02,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:58:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-16 03:58:02,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:58:02,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027018957] [2021-12-16 03:58:02,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027018957] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:58:02,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354136797] [2021-12-16 03:58:02,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:58:02,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:58:02,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:58:02,097 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:58:02,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:58:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:02,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:58:02,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:58:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-16 03:58:02,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:58:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-16 03:58:03,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354136797] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:58:03,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:58:03,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2021-12-16 03:58:03,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737059250] [2021-12-16 03:58:03,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:58:03,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 03:58:03,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:58:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 03:58:03,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:58:03,320 INFO L87 Difference]: Start difference. First operand 3846 states and 5441 transitions. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-16 03:58:07,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:58:07,629 INFO L93 Difference]: Finished difference Result 8264 states and 11914 transitions. [2021-12-16 03:58:07,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:58:07,636 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 156 [2021-12-16 03:58:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:58:07,656 INFO L225 Difference]: With dead ends: 8264 [2021-12-16 03:58:07,656 INFO L226 Difference]: Without dead ends: 4428 [2021-12-16 03:58:07,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:58:07,667 INFO L933 BasicCegarLoop]: 1468 mSDtfsCounter, 813 mSDsluCounter, 5379 mSDsCounter, 0 mSdLazyCounter, 3000 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 6847 SdHoareTripleChecker+Invalid, 3685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 3000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:58:07,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 6847 Invalid, 3685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 3000 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-16 03:58:07,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2021-12-16 03:58:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 3882. [2021-12-16 03:58:07,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2816 states have (on average 1.3082386363636365) internal successors, (3684), 2853 states have internal predecessors, (3684), 799 states have call successors, (799), 235 states have call predecessors, (799), 266 states have return successors, (994), 836 states have call predecessors, (994), 798 states have call successors, (994) [2021-12-16 03:58:07,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5477 transitions. [2021-12-16 03:58:07,823 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5477 transitions. Word has length 156 [2021-12-16 03:58:07,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:58:07,823 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 5477 transitions. [2021-12-16 03:58:07,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-16 03:58:07,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5477 transitions. [2021-12-16 03:58:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-16 03:58:07,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:58:07,833 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:58:07,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:58:08,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:58:08,048 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:58:08,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:58:08,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1310354671, now seen corresponding path program 1 times [2021-12-16 03:58:08,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:58:08,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111632211] [2021-12-16 03:58:08,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:58:08,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:58:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:58:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:58:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:58:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:58:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:58:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:58:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:58:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:58:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:58:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:58:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 03:58:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:58:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 03:58:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:58:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 03:58:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:58:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:58:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:58:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:58:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 03:58:08,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:58:08,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111632211] [2021-12-16 03:58:08,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111632211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:58:08,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:58:08,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:58:08,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934353608] [2021-12-16 03:58:08,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:58:08,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:58:08,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:58:08,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:58:08,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:58:08,523 INFO L87 Difference]: Start difference. First operand 3882 states and 5477 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 03:58:14,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:58:14,697 INFO L93 Difference]: Finished difference Result 13272 states and 19349 transitions. [2021-12-16 03:58:14,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 03:58:14,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 159 [2021-12-16 03:58:14,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:58:14,739 INFO L225 Difference]: With dead ends: 13272 [2021-12-16 03:58:14,740 INFO L226 Difference]: Without dead ends: 9400 [2021-12-16 03:58:14,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:58:14,753 INFO L933 BasicCegarLoop]: 2155 mSDtfsCounter, 3331 mSDsluCounter, 4403 mSDsCounter, 0 mSdLazyCounter, 3896 mSolverCounterSat, 2083 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3573 SdHoareTripleChecker+Valid, 6558 SdHoareTripleChecker+Invalid, 5979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2083 IncrementalHoareTripleChecker+Valid, 3896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-16 03:58:14,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3573 Valid, 6558 Invalid, 5979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2083 Valid, 3896 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-12-16 03:58:14,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9400 states.