./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 ff03de63 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-dev-ff03de6 [2021-12-21 16:10:49,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:10:49,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:10:49,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:10:49,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:10:49,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:10:49,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:10:49,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:10:49,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:10:49,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:10:49,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:10:49,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:10:49,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:10:49,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:10:49,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:10:49,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:10:49,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:10:49,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:10:49,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:10:49,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:10:49,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:10:49,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:10:49,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:10:49,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:10:49,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:10:49,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:10:49,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:10:49,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:10:49,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:10:49,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:10:49,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:10:49,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:10:49,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:10:49,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:10:49,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:10:49,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:10:49,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:10:49,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:10:49,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:10:49,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:10:49,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:10:49,680 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:10:49,705 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:10:49,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:10:49,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:10:49,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:10:49,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:10:49,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:10:49,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:10:49,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:10:49,714 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:10:49,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:10:49,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:10:49,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:10:49,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:10:49,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:10:49,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:10:49,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:10:49,716 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:10:49,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:10:49,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:10:49,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:10:49,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:10:49,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:10:49,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:10:49,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:10:49,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:10:49,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:10:49,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:10:49,718 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:10:49,719 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:10:49,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:10:49,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:10:49,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc [2021-12-21 16:10:49,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:10:50,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:10:50,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:10:50,003 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:10:50,004 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:10:50,005 INFO L432 ainManager$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 [2021-12-21 16:10:50,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade17ac17/6b332d5dc2b24422808f220cbccd769f/FLAGab9082efb [2021-12-21 16:10:50,786 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:10:50,786 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 [2021-12-21 16:10:50,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade17ac17/6b332d5dc2b24422808f220cbccd769f/FLAGab9082efb [2021-12-21 16:10:51,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade17ac17/6b332d5dc2b24422808f220cbccd769f [2021-12-21 16:10:51,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:10:51,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:10:51,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:10:51,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:10:51,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:10:51,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:10:51" (1/1) ... [2021-12-21 16:10:51,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@712649db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:51, skipping insertion in model container [2021-12-21 16:10:51,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:10:51" (1/1) ... [2021-12-21 16:10:51,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:10:51,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:10:51,955 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] [2021-12-21 16:10:52,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:10:52,521 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:10:52,640 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] [2021-12-21 16:10:52,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:10:52,897 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:10:52,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:52 WrapperNode [2021-12-21 16:10:52,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:10:52,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:10:52,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:10:52,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:10:52,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:52" (1/1) ... [2021-12-21 16:10:52,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:52" (1/1) ... [2021-12-21 16:10:53,115 INFO L137 Inliner]: procedures = 220, calls = 1799, calls flagged for inlining = 81, calls inlined = 72, statements flattened = 3206 [2021-12-21 16:10:53,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:10:53,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:10:53,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:10:53,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:10:53,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:52" (1/1) ... [2021-12-21 16:10:53,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:52" (1/1) ... [2021-12-21 16:10:53,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:52" (1/1) ... [2021-12-21 16:10:53,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:52" (1/1) ... [2021-12-21 16:10:53,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:52" (1/1) ... [2021-12-21 16:10:53,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:52" (1/1) ... [2021-12-21 16:10:53,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:52" (1/1) ... [2021-12-21 16:10:53,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:10:53,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:10:53,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:10:53,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:10:53,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:52" (1/1) ... [2021-12-21 16:10:53,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:10:53,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:10:53,341 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) [2021-12-21 16:10:53,361 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 [2021-12-21 16:10:53,376 INFO L130 BoogieDeclarations]: Found specification of procedure nla_get_u32 [2021-12-21 16:10:53,376 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_get_u32 [2021-12-21 16:10:53,377 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_xmit [2021-12-21 16:10:53,377 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_xmit [2021-12-21 16:10:53,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:10:53,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:10:53,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:10:53,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:10:53,378 INFO L130 BoogieDeclarations]: Found specification of procedure nla_put_u32 [2021-12-21 16:10:53,378 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_put_u32 [2021-12-21 16:10:53,378 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_start_tx [2021-12-21 16:10:53,378 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_start_tx [2021-12-21 16:10:53,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:10:53,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:10:53,379 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-12-21 16:10:53,379 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-12-21 16:10:53,379 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_bits [2021-12-21 16:10:53,379 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_bits [2021-12-21 16:10:53,379 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-12-21 16:10:53,379 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-12-21 16:10:53,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-21 16:10:53,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-21 16:10:53,380 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2021-12-21 16:10:53,380 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2021-12-21 16:10:53,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:10:53,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:10:53,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2021-12-21 16:10:53,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2021-12-21 16:10:53,381 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-21 16:10:53,381 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-21 16:10:53,381 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-21 16:10:53,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-21 16:10:53,381 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:10:53,382 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:10:53,382 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-21 16:10:53,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-21 16:10:53,382 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-21 16:10:53,383 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-21 16:10:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_fill_info [2021-12-21 16:10:53,383 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_fill_info [2021-12-21 16:10:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:10:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-21 16:10:53,383 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-21 16:10:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_desc [2021-12-21 16:10:53,384 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_desc [2021-12-21 16:10:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_update_aggregation_stats [2021-12-21 16:10:53,384 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_update_aggregation_stats [2021-12-21 16:10:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:10:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-21 16:10:53,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-21 16:10:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:10:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_tx_frm [2021-12-21 16:10:53,385 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_tx_frm [2021-12-21 16:10:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:10:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-21 16:10:53,386 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-21 16:10:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_dequeue [2021-12-21 16:10:53,387 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_dequeue [2021-12-21 16:10:53,387 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-21 16:10:53,388 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-21 16:10:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-21 16:10:53,388 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-21 16:10:53,388 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-21 16:10:53,388 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-21 16:10:53,389 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_desc_len [2021-12-21 16:10:53,389 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_desc_len [2021-12-21 16:10:53,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:10:53,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-21 16:10:53,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-21 16:10:53,389 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_tx_queue_len [2021-12-21 16:10:53,390 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_tx_queue_len [2021-12-21 16:10:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-21 16:10:53,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-21 16:10:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:10:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-21 16:10:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-21 16:10:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:10:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_21 [2021-12-21 16:10:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_21 [2021-12-21 16:10:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-21 16:10:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-21 16:10:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 16:10:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 16:10:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-21 16:10:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-21 16:10:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-21 16:10:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-21 16:10:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_get_size [2021-12-21 16:10:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_get_size [2021-12-21 16:10:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_netlink_parms [2021-12-21 16:10:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_netlink_parms [2021-12-21 16:10:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-12-21 16:10:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-12-21 16:10:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:10:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:10:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:10:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:10:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:10:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:10:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-21 16:10:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-21 16:10:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-21 16:10:53,450 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-21 16:10:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2021-12-21 16:10:53,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2021-12-21 16:10:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:10:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-21 16:10:53,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-21 16:10:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_changelink [2021-12-21 16:10:53,450 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_changelink [2021-12-21 16:10:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:10:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-21 16:10:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-21 16:10:53,450 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-21 16:10:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-21 16:10:53,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-21 16:10:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-12-21 16:10:53,451 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-12-21 16:10:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_open [2021-12-21 16:10:53,451 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_open [2021-12-21 16:10:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_done [2021-12-21 16:10:53,452 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_done [2021-12-21 16:10:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-21 16:10:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-21 16:10:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_is_locked [2021-12-21 16:10:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_is_locked [2021-12-21 16:10:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-21 16:10:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-21 16:10:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_can_send_aggregate [2021-12-21 16:10:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_can_send_aggregate [2021-12-21 16:10:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-21 16:10:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-21 16:10:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-21 16:10:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-21 16:10:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:10:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:10:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-12-21 16:10:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-12-21 16:10:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-21 16:10:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-21 16:10:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-21 16:10:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-21 16:10:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_newlink [2021-12-21 16:10:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_newlink [2021-12-21 16:10:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-21 16:10:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-21 16:10:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:10:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-12-21 16:10:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-12-21 16:10:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_close [2021-12-21 16:10:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_close [2021-12-21 16:10:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-12-21 16:10:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-12-21 16:10:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_abort_tx [2021-12-21 16:10:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_abort_tx [2021-12-21 16:10:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-21 16:10:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-21 16:10:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:10:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:10:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-21 16:10:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-21 16:10:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-12-21 16:10:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-12-21 16:10:53,959 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:10:53,961 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:10:54,339 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:10:56,568 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:10:56,580 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:10:56,580 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-21 16:10:56,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:10:56 BoogieIcfgContainer [2021-12-21 16:10:56,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:10:56,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:10:56,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:10:56,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:10:56,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:10:51" (1/3) ... [2021-12-21 16:10:56,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a647315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:10:56, skipping insertion in model container [2021-12-21 16:10:56,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:10:52" (2/3) ... [2021-12-21 16:10:56,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a647315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:10:56, skipping insertion in model container [2021-12-21 16:10:56,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:10:56" (3/3) ... [2021-12-21 16:10:56,589 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 [2021-12-21 16:10:56,593 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:10:56,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:10:56,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:10:56,676 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 [2021-12-21 16:10:56,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:10:56,715 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) [2021-12-21 16:10:56,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-21 16:10:56,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:10:56,727 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] [2021-12-21 16:10:56,727 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:10:56,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:10:56,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1207697296, now seen corresponding path program 1 times [2021-12-21 16:10:56,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:10:56,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691580912] [2021-12-21 16:10:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:10:56,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:10:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:10:57,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:10:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:10:57,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:10:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:10:57,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:10:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:10:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 16:10:57,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:10:57,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691580912] [2021-12-21 16:10:57,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691580912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:10:57,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:10:57,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:10:57,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029950833] [2021-12-21 16:10:57,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:10:57,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:10:57,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:10:57,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:10:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:10:57,260 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) [2021-12-21 16:11:00,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:11:00,982 INFO L93 Difference]: Finished difference Result 3524 states and 5199 transitions. [2021-12-21 16:11:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:11:00,984 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 [2021-12-21 16:11:00,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:11:01,017 INFO L225 Difference]: With dead ends: 3524 [2021-12-21 16:11:01,018 INFO L226 Difference]: Without dead ends: 2417 [2021-12-21 16:11:01,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:11:01,032 INFO L933 BasicCegarLoop]: 1794 mSDtfsCounter, 2061 mSDsluCounter, 5371 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2255 SdHoareTripleChecker+Valid, 7165 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:11:01,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2255 Valid, 7165 Invalid, 2577 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [752 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-21 16:11:01,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2021-12-21 16:11:01,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2213. [2021-12-21 16:11:01,238 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) [2021-12-21 16:11:01,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 3140 transitions. [2021-12-21 16:11:01,257 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 3140 transitions. Word has length 39 [2021-12-21 16:11:01,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:11:01,257 INFO L470 AbstractCegarLoop]: Abstraction has 2213 states and 3140 transitions. [2021-12-21 16:11:01,258 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) [2021-12-21 16:11:01,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 3140 transitions. [2021-12-21 16:11:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-21 16:11:01,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:11:01,271 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] [2021-12-21 16:11:01,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:11:01,272 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:11:01,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:11:01,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1372830722, now seen corresponding path program 1 times [2021-12-21 16:11:01,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:11:01,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837280038] [2021-12-21 16:11:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:11:01,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:11:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:01,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:11:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:01,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:11:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:01,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:11:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:01,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:11:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:01,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:11:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:01,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:11:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:01,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:01,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 16:11:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:11:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:01,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:01,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:11:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:02,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 16:11:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:02,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:11:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:02,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 16:11:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 16:11:02,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:11:02,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837280038] [2021-12-21 16:11:02,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837280038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:11:02,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:11:02,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 16:11:02,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50375955] [2021-12-21 16:11:02,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:11:02,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 16:11:02,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:11:02,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 16:11:02,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-21 16:11:02,051 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) [2021-12-21 16:11:07,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:11:07,475 INFO L93 Difference]: Finished difference Result 4788 states and 7042 transitions. [2021-12-21 16:11:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 16:11:07,475 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 [2021-12-21 16:11:07,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:11:07,493 INFO L225 Difference]: With dead ends: 4788 [2021-12-21 16:11:07,493 INFO L226 Difference]: Without dead ends: 2585 [2021-12-21 16:11:07,507 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 [2021-12-21 16:11:07,508 INFO L933 BasicCegarLoop]: 1479 mSDtfsCounter, 481 mSDsluCounter, 10041 mSDsCounter, 0 mSdLazyCounter, 3825 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 11520 SdHoareTripleChecker+Invalid, 4169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 3825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-21 16:11:07,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 11520 Invalid, 4169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 3825 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-21 16:11:07,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2021-12-21 16:11:07,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2241. [2021-12-21 16:11:07,603 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) [2021-12-21 16:11:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 3189 transitions. [2021-12-21 16:11:07,616 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 3189 transitions. Word has length 126 [2021-12-21 16:11:07,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:11:07,618 INFO L470 AbstractCegarLoop]: Abstraction has 2241 states and 3189 transitions. [2021-12-21 16:11:07,619 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) [2021-12-21 16:11:07,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 3189 transitions. [2021-12-21 16:11:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-21 16:11:07,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:11:07,627 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] [2021-12-21 16:11:07,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:11:07,628 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:11:07,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:11:07,628 INFO L85 PathProgramCache]: Analyzing trace with hash 828082038, now seen corresponding path program 1 times [2021-12-21 16:11:07,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:11:07,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474113239] [2021-12-21 16:11:07,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:11:07,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:11:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:07,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:11:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:07,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:11:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:07,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:11:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:07,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:11:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:07,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:11:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:07,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:11:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:07,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:07,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 16:11:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:11:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:07,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:11:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:08,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:11:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:11:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 16:11:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-21 16:11:08,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:11:08,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474113239] [2021-12-21 16:11:08,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474113239] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:11:08,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540821030] [2021-12-21 16:11:08,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:11:08,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:11:08,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:11:08,055 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) [2021-12-21 16:11:08,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 16:11:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:08,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 16:11:08,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:11:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 16:11:08,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 16:11:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-21 16:11:09,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540821030] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 16:11:09,280 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 16:11:09,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 9 [2021-12-21 16:11:09,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062300960] [2021-12-21 16:11:09,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 16:11:09,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 16:11:09,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:11:09,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 16:11:09,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:11:09,289 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) [2021-12-21 16:11:12,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:11:12,785 INFO L93 Difference]: Finished difference Result 4892 states and 7224 transitions. [2021-12-21 16:11:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 16:11:12,792 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 [2021-12-21 16:11:12,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:11:12,809 INFO L225 Difference]: With dead ends: 4892 [2021-12-21 16:11:12,810 INFO L226 Difference]: Without dead ends: 2661 [2021-12-21 16:11:12,820 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 [2021-12-21 16:11:12,821 INFO L933 BasicCegarLoop]: 1489 mSDtfsCounter, 511 mSDsluCounter, 3692 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:11:12,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 5181 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-21 16:11:12,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2021-12-21 16:11:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 2313. [2021-12-21 16:11:12,914 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) [2021-12-21 16:11:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3294 transitions. [2021-12-21 16:11:12,924 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3294 transitions. Word has length 127 [2021-12-21 16:11:12,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:11:12,925 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 3294 transitions. [2021-12-21 16:11:12,925 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) [2021-12-21 16:11:12,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3294 transitions. [2021-12-21 16:11:12,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-21 16:11:12,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:11:12,933 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] [2021-12-21 16:11:12,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 16:11:13,147 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 [2021-12-21 16:11:13,147 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:11:13,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:11:13,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1635970812, now seen corresponding path program 1 times [2021-12-21 16:11:13,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:11:13,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693813016] [2021-12-21 16:11:13,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:11:13,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:11:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:11:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:11:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:11:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 16:11:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:11:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:11:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 16:11:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:11:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:11:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:11:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 16:11:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 16:11:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 16:11:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-21 16:11:13,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:11:13,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693813016] [2021-12-21 16:11:13,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693813016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:11:13,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:11:13,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 16:11:13,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832060659] [2021-12-21 16:11:13,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:11:13,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 16:11:13,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:11:13,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 16:11:13,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-21 16:11:13,626 INFO L87 Difference]: Start difference. First operand 2313 states and 3294 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 6 states have internal predecessors, (89), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 16:11:17,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:11:17,208 INFO L93 Difference]: Finished difference Result 4986 states and 7307 transitions. [2021-12-21 16:11:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 16:11:17,209 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 6 states have internal predecessors, (89), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2021-12-21 16:11:17,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:11:17,234 INFO L225 Difference]: With dead ends: 4986 [2021-12-21 16:11:17,234 INFO L226 Difference]: Without dead ends: 2683 [2021-12-21 16:11:17,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-21 16:11:17,248 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 828 mSDsluCounter, 8355 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 9854 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:11:17,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 9854 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 2978 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-21 16:11:17,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-12-21 16:11:17,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2331. [2021-12-21 16:11:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 1646 states have (on average 1.3043742405832321) internal successors, (2147), 1673 states have internal predecessors, (2147), 526 states have call successors, (526), 141 states have call predecessors, (526), 158 states have return successors, (648), 545 states have call predecessors, (648), 525 states have call successors, (648) [2021-12-21 16:11:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3321 transitions. [2021-12-21 16:11:17,405 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3321 transitions. Word has length 136 [2021-12-21 16:11:17,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:11:17,406 INFO L470 AbstractCegarLoop]: Abstraction has 2331 states and 3321 transitions. [2021-12-21 16:11:17,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 6 states have internal predecessors, (89), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 16:11:17,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3321 transitions. [2021-12-21 16:11:17,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-21 16:11:17,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:11:17,418 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] [2021-12-21 16:11:17,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:11:17,418 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:11:17,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:11:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1432107075, now seen corresponding path program 1 times [2021-12-21 16:11:17,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:11:17,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409422708] [2021-12-21 16:11:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:11:17,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:11:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:11:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:11:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:11:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 16:11:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:11:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:11:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 16:11:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:11:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:11:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:11:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 16:11:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 16:11:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 16:11:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 16:11:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-21 16:11:17,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:11:17,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409422708] [2021-12-21 16:11:17,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409422708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:11:17,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:11:17,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:11:17,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274790815] [2021-12-21 16:11:17,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:11:17,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:11:17,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:11:17,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:11:17,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:11:17,760 INFO L87 Difference]: Start difference. First operand 2331 states and 3321 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) [2021-12-21 16:11:21,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:11:21,593 INFO L93 Difference]: Finished difference Result 5022 states and 7353 transitions. [2021-12-21 16:11:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:11:21,595 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 [2021-12-21 16:11:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:11:21,612 INFO L225 Difference]: With dead ends: 5022 [2021-12-21 16:11:21,612 INFO L226 Difference]: Without dead ends: 2701 [2021-12-21 16:11:21,622 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 [2021-12-21 16:11:21,623 INFO L933 BasicCegarLoop]: 1504 mSDtfsCounter, 761 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 3979 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:11:21,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [830 Valid, 3979 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-21 16:11:21,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-12-21 16:11:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2343. [2021-12-21 16:11:21,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 1656 states have (on average 1.303743961352657) internal successors, (2159), 1683 states have internal predecessors, (2159), 528 states have call successors, (528), 141 states have call predecessors, (528), 158 states have return successors, (655), 547 states have call predecessors, (655), 527 states have call successors, (655) [2021-12-21 16:11:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3342 transitions. [2021-12-21 16:11:21,730 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3342 transitions. Word has length 147 [2021-12-21 16:11:21,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:11:21,730 INFO L470 AbstractCegarLoop]: Abstraction has 2343 states and 3342 transitions. [2021-12-21 16:11:21,731 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) [2021-12-21 16:11:21,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3342 transitions. [2021-12-21 16:11:21,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-21 16:11:21,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:11:21,739 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] [2021-12-21 16:11:21,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 16:11:21,739 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:11:21,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:11:21,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1266616076, now seen corresponding path program 1 times [2021-12-21 16:11:21,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:11:21,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105368794] [2021-12-21 16:11:21,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:11:21,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:11:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:21,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:11:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:21,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:11:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:21,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:11:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:21,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-21 16:11:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:11:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:21,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 16:11:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:21,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 16:11:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:21,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 16:11:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:21,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 16:11:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:21,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 16:11:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:21,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 16:11:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:21,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:11:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:22,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:22,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:11:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:22,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:11:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:22,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:22,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:11:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:22,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 16:11:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:22,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:11:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 16:11:22,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:11:22,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105368794] [2021-12-21 16:11:22,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105368794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:11:22,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:11:22,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:11:22,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710593567] [2021-12-21 16:11:22,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:11:22,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:11:22,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:11:22,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:11:22,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:11:22,074 INFO L87 Difference]: Start difference. First operand 2343 states and 3342 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) [2021-12-21 16:11:25,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:11:25,738 INFO L93 Difference]: Finished difference Result 6739 states and 9712 transitions. [2021-12-21 16:11:25,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 16:11:25,739 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 [2021-12-21 16:11:25,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:11:25,762 INFO L225 Difference]: With dead ends: 6739 [2021-12-21 16:11:25,763 INFO L226 Difference]: Without dead ends: 4406 [2021-12-21 16:11:25,772 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 [2021-12-21 16:11:25,773 INFO L933 BasicCegarLoop]: 1612 mSDtfsCounter, 2225 mSDsluCounter, 2563 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 1107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 4175 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1107 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:11:25,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2386 Valid, 4175 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1107 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-21 16:11:25,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4406 states. [2021-12-21 16:11:25,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4406 to 3842. [2021-12-21 16:11:25,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3842 states, 2776 states have (on average 1.3126801152737753) internal successors, (3644), 2813 states have internal predecessors, (3644), 799 states have call successors, (799), 235 states have call predecessors, (799), 266 states have return successors, (1005), 836 states have call predecessors, (1005), 798 states have call successors, (1005) [2021-12-21 16:11:25,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3842 states to 3842 states and 5448 transitions. [2021-12-21 16:11:25,982 INFO L78 Accepts]: Start accepts. Automaton has 3842 states and 5448 transitions. Word has length 162 [2021-12-21 16:11:25,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:11:25,983 INFO L470 AbstractCegarLoop]: Abstraction has 3842 states and 5448 transitions. [2021-12-21 16:11:25,984 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) [2021-12-21 16:11:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3842 states and 5448 transitions. [2021-12-21 16:11:25,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 16:11:25,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:11:25,993 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:11:25,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 16:11:25,993 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:11:25,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:11:25,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1971329257, now seen corresponding path program 1 times [2021-12-21 16:11:25,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:11:25,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26264636] [2021-12-21 16:11:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:11:25,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:11:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:11:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:11:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:11:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 16:11:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:11:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 16:11:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 16:11:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:11:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:11:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 16:11:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 16:11:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 16:11:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 16:11:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:11:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 16:11:26,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:11:26,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26264636] [2021-12-21 16:11:26,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26264636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:11:26,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:11:26,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 16:11:26,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195092667] [2021-12-21 16:11:26,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:11:26,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 16:11:26,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:11:26,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 16:11:26,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:11:26,417 INFO L87 Difference]: Start difference. First operand 3842 states and 5448 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-21 16:11:32,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:11:32,031 INFO L93 Difference]: Finished difference Result 13152 states and 19261 transitions. [2021-12-21 16:11:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 16:11:32,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 155 [2021-12-21 16:11:32,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:11:32,075 INFO L225 Difference]: With dead ends: 13152 [2021-12-21 16:11:32,075 INFO L226 Difference]: Without dead ends: 9320 [2021-12-21 16:11:32,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-21 16:11:32,091 INFO L933 BasicCegarLoop]: 2174 mSDtfsCounter, 2751 mSDsluCounter, 4485 mSDsCounter, 0 mSdLazyCounter, 3936 mSolverCounterSat, 1484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2993 SdHoareTripleChecker+Valid, 6659 SdHoareTripleChecker+Invalid, 5420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1484 IncrementalHoareTripleChecker+Valid, 3936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:11:32,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2993 Valid, 6659 Invalid, 5420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1484 Valid, 3936 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-12-21 16:11:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9320 states. [2021-12-21 16:11:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9320 to 7908. [2021-12-21 16:11:32,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7908 states, 5713 states have (on average 1.3120952214248205) internal successors, (7496), 5809 states have internal predecessors, (7496), 1646 states have call successors, (1646), 461 states have call predecessors, (1646), 548 states have return successors, (2273), 1733 states have call predecessors, (2273), 1645 states have call successors, (2273) [2021-12-21 16:11:32,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7908 states to 7908 states and 11415 transitions. [2021-12-21 16:11:32,523 INFO L78 Accepts]: Start accepts. Automaton has 7908 states and 11415 transitions. Word has length 155 [2021-12-21 16:11:32,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:11:32,524 INFO L470 AbstractCegarLoop]: Abstraction has 7908 states and 11415 transitions. [2021-12-21 16:11:32,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-21 16:11:32,525 INFO L276 IsEmpty]: Start isEmpty. Operand 7908 states and 11415 transitions. [2021-12-21 16:11:32,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-21 16:11:32,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:11:32,542 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-21 16:11:32,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 16:11:32,543 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:11:32,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:11:32,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2091971660, now seen corresponding path program 1 times [2021-12-21 16:11:32,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:11:32,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341039836] [2021-12-21 16:11:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:11:32,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:11:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:11:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:11:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:11:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:11:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:11:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 16:11:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 16:11:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:11:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:11:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 16:11:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 16:11:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 16:11:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 16:11:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:11:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 16:11:32,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:11:32,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341039836] [2021-12-21 16:11:32,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341039836] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:11:32,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:11:32,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 16:11:32,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839601642] [2021-12-21 16:11:32,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:11:32,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 16:11:32,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:11:32,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 16:11:32,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-21 16:11:32,965 INFO L87 Difference]: Start difference. First operand 7908 states and 11415 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-21 16:11:42,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:11:42,051 INFO L93 Difference]: Finished difference Result 16906 states and 24718 transitions. [2021-12-21 16:11:42,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 16:11:42,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 152 [2021-12-21 16:11:42,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:11:42,097 INFO L225 Difference]: With dead ends: 16906 [2021-12-21 16:11:42,097 INFO L226 Difference]: Without dead ends: 9008 [2021-12-21 16:11:42,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-12-21 16:11:42,126 INFO L933 BasicCegarLoop]: 2072 mSDtfsCounter, 3192 mSDsluCounter, 7761 mSDsCounter, 0 mSdLazyCounter, 7421 mSolverCounterSat, 1962 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3410 SdHoareTripleChecker+Valid, 9833 SdHoareTripleChecker+Invalid, 9383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1962 IncrementalHoareTripleChecker+Valid, 7421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-12-21 16:11:42,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3410 Valid, 9833 Invalid, 9383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1962 Valid, 7421 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2021-12-21 16:11:42,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9008 states. [2021-12-21 16:11:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9008 to 8012. [2021-12-21 16:11:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8012 states, 5801 states have (on average 1.3128770901568696) internal successors, (7616), 5889 states have internal predecessors, (7616), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 556 states have return successors, (2313), 1757 states have call predecessors, (2313), 1653 states have call successors, (2313) [2021-12-21 16:11:42,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8012 states to 8012 states and 11583 transitions. [2021-12-21 16:11:42,594 INFO L78 Accepts]: Start accepts. Automaton has 8012 states and 11583 transitions. Word has length 152 [2021-12-21 16:11:42,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:11:42,595 INFO L470 AbstractCegarLoop]: Abstraction has 8012 states and 11583 transitions. [2021-12-21 16:11:42,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-21 16:11:42,595 INFO L276 IsEmpty]: Start isEmpty. Operand 8012 states and 11583 transitions. [2021-12-21 16:11:42,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-21 16:11:42,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:11:42,615 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:11:42,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 16:11:42,616 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:11:42,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:11:42,616 INFO L85 PathProgramCache]: Analyzing trace with hash 442906612, now seen corresponding path program 1 times [2021-12-21 16:11:42,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:11:42,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21455424] [2021-12-21 16:11:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:11:42,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:11:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:11:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:11:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:11:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 16:11:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:11:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 16:11:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 16:11:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:11:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:11:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 16:11:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 16:11:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:11:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 16:11:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:11:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 16:11:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:42,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:43,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:11:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:43,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:11:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:11:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-21 16:11:43,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:11:43,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21455424] [2021-12-21 16:11:43,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21455424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:11:43,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:11:43,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-21 16:11:43,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010867786] [2021-12-21 16:11:43,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:11:43,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 16:11:43,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:11:43,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 16:11:43,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-21 16:11:43,079 INFO L87 Difference]: Start difference. First operand 8012 states and 11583 transitions. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 9 states have internal predecessors, (119), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19)