./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.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 ecea5961d53d2608898d65c83a7bf6d9a36712172eaf67bd828ea354982e0e3d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:31:20,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:31:20,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:31:20,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:31:20,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:31:20,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:31:20,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:31:20,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:31:20,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:31:20,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:31:20,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:31:20,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:31:20,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:31:20,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:31:20,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:31:20,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:31:20,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:31:20,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:31:20,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:31:20,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:31:20,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:31:20,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:31:20,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:31:20,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:31:20,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:31:20,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:31:20,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:31:20,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:31:20,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:31:20,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:31:20,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:31:20,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:31:20,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:31:20,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:31:20,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:31:20,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:31:20,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:31:20,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:31:20,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:31:20,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:31:20,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:31:20,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:31:20,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:31:20,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:31:20,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:31:20,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:31:20,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:31:20,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:31:20,650 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:31:20,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:31:20,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:31:20,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:31:20,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:31:20,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:31:20,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:31:20,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:31:20,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:31:20,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:31:20,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:31:20,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:31:20,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:31:20,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:31:20,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:31:20,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:31:20,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:31:20,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:31:20,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:31:20,654 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:31:20,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:31:20,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:31:20,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:31:20,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecea5961d53d2608898d65c83a7bf6d9a36712172eaf67bd828ea354982e0e3d [2021-11-07 13:31:20,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:31:20,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:31:20,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:31:20,831 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:31:20,832 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:31:20,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2021-11-07 13:31:20,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e34b121a/18f39153c4bd4155be649d95768aaa4c/FLAG18348f798 [2021-11-07 13:31:21,578 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:31:21,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2021-11-07 13:31:21,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e34b121a/18f39153c4bd4155be649d95768aaa4c/FLAG18348f798 [2021-11-07 13:31:21,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e34b121a/18f39153c4bd4155be649d95768aaa4c [2021-11-07 13:31:21,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:31:21,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:31:21,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:31:21,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:31:21,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:31:21,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:31:21" (1/1) ... [2021-11-07 13:31:21,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b2f78ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:21, skipping insertion in model container [2021-11-07 13:31:21,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:31:21" (1/1) ... [2021-11-07 13:31:21,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:31:22,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:31:22,398 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5338] [2021-11-07 13:31:22,399 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5339-5340] [2021-11-07 13:31:22,499 WARN L228 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-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i[158055,158068] [2021-11-07 13:31:23,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:31:23,987 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:31:24,069 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5338] [2021-11-07 13:31:24,070 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5339-5340] [2021-11-07 13:31:24,072 WARN L228 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-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i[158055,158068] [2021-11-07 13:31:24,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:31:24,517 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:31:24,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:24 WrapperNode [2021-11-07 13:31:24,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:31:24,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:31:24,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:31:24,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:31:24,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:24" (1/1) ... [2021-11-07 13:31:24,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:24" (1/1) ... [2021-11-07 13:31:26,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:31:26,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:31:26,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:31:26,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:31:26,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:24" (1/1) ... [2021-11-07 13:31:26,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:24" (1/1) ... [2021-11-07 13:31:27,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:24" (1/1) ... [2021-11-07 13:31:27,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:24" (1/1) ... [2021-11-07 13:31:28,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:24" (1/1) ... [2021-11-07 13:31:28,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:24" (1/1) ... [2021-11-07 13:31:28,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:24" (1/1) ... [2021-11-07 13:31:29,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:31:29,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:31:29,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:31:29,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:31:29,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:24" (1/1) ... [2021-11-07 13:31:29,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:31:29,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:31:29,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 13:31:29,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 13:31:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:31:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:31:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:31:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:31:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:31:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:31:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:31:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:31:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:31:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:31:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:31:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:31:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:31:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:31:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:34:44,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:34:44,433 INFO L299 CfgBuilder]: Removed 20027 assume(true) statements. [2021-11-07 13:34:44,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:44 BoogieIcfgContainer [2021-11-07 13:34:44,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:34:44,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:34:44,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:34:44,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:34:44,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:31:21" (1/3) ... [2021-11-07 13:34:44,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631517bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:44, skipping insertion in model container [2021-11-07 13:34:44,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:24" (2/3) ... [2021-11-07 13:34:44,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631517bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:44, skipping insertion in model container [2021-11-07 13:34:44,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:44" (3/3) ... [2021-11-07 13:34:44,454 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2021-11-07 13:34:44,457 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:34:44,457 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 13:34:44,529 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:34:44,536 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 13:34:44,536 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 13:34:44,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 18345 states, 18337 states have (on average 1.3711075966624857) internal successors, (25142), 18344 states have internal predecessors, (25142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:34:44,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 13:34:44,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:34:44,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:34:44,707 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 13:34:44,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:34:44,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2025150548, now seen corresponding path program 1 times [2021-11-07 13:34:44,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:34:44,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553464143] [2021-11-07 13:34:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:34:44,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:34:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:34:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:34:45,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:34:45,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553464143] [2021-11-07 13:34:45,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553464143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:34:45,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:34:45,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:34:45,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337990947] [2021-11-07 13:34:45,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:34:45,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:34:45,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:34:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:34:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:34:45,592 INFO L87 Difference]: Start difference. First operand has 18345 states, 18337 states have (on average 1.3711075966624857) internal successors, (25142), 18344 states have internal predecessors, (25142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:34:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:34:47,012 INFO L93 Difference]: Finished difference Result 49189 states and 67424 transitions. [2021-11-07 13:34:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:34:47,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-07 13:34:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:34:47,155 INFO L225 Difference]: With dead ends: 49189 [2021-11-07 13:34:47,155 INFO L226 Difference]: Without dead ends: 30739 [2021-11-07 13:34:47,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:34:47,208 INFO L933 BasicCegarLoop]: 25019 mSDtfsCounter, 17275 mSDsluCounter, 24829 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 659.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17275 SdHoareTripleChecker+Valid, 49848 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.83ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 716.09ms IncrementalHoareTripleChecker+Time [2021-11-07 13:34:47,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17275 Valid, 49848 Invalid, 97 Unknown, 0 Unchecked, 72.83ms Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 716.09ms Time] [2021-11-07 13:34:47,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30739 states. [2021-11-07 13:34:47,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30739 to 29791. [2021-11-07 13:34:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29791 states, 29784 states have (on average 1.3668412570507655) internal successors, (40710), 29790 states have internal predecessors, (40710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:34:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29791 states to 29791 states and 40710 transitions. [2021-11-07 13:34:47,905 INFO L78 Accepts]: Start accepts. Automaton has 29791 states and 40710 transitions. Word has length 36 [2021-11-07 13:34:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:34:47,907 INFO L470 AbstractCegarLoop]: Abstraction has 29791 states and 40710 transitions. [2021-11-07 13:34:47,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:34:47,909 INFO L276 IsEmpty]: Start isEmpty. Operand 29791 states and 40710 transitions. [2021-11-07 13:34:47,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 13:34:47,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:34:47,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:34:47,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:34:47,916 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 13:34:47,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:34:47,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1849816215, now seen corresponding path program 1 times [2021-11-07 13:34:47,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:34:47,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702258196] [2021-11-07 13:34:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:34:47,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:34:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:34:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:34:48,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:34:48,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702258196] [2021-11-07 13:34:48,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702258196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:34:48,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:34:48,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:34:48,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883449476] [2021-11-07 13:34:48,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:34:48,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:34:48,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:34:48,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:34:48,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:34:48,333 INFO L87 Difference]: Start difference. First operand 29791 states and 40710 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:34:53,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:34:53,576 INFO L93 Difference]: Finished difference Result 57269 states and 78230 transitions. [2021-11-07 13:34:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:34:53,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 13:34:53,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:34:53,630 INFO L225 Difference]: With dead ends: 57269 [2021-11-07 13:34:53,631 INFO L226 Difference]: Without dead ends: 27508 [2021-11-07 13:34:53,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:34:53,677 INFO L933 BasicCegarLoop]: 21821 mSDtfsCounter, 22399 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4347.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22399 SdHoareTripleChecker+Valid, 21821 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.25ms SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4692.50ms IncrementalHoareTripleChecker+Time [2021-11-07 13:34:53,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22399 Valid, 21821 Invalid, 1224 Unknown, 0 Unchecked, 39.25ms Time], IncrementalHoareTripleChecker [611 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 4692.50ms Time] [2021-11-07 13:34:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27508 states. [2021-11-07 13:34:55,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27508 to 27508. [2021-11-07 13:34:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27508 states, 27501 states have (on average 1.328097160103269) internal successors, (36524), 27507 states have internal predecessors, (36524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:34:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27508 states to 27508 states and 36524 transitions. [2021-11-07 13:34:55,490 INFO L78 Accepts]: Start accepts. Automaton has 27508 states and 36524 transitions. Word has length 45 [2021-11-07 13:34:55,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:34:55,493 INFO L470 AbstractCegarLoop]: Abstraction has 27508 states and 36524 transitions. [2021-11-07 13:34:55,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:34:55,493 INFO L276 IsEmpty]: Start isEmpty. Operand 27508 states and 36524 transitions. [2021-11-07 13:34:55,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 13:34:55,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:34:55,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:34:55,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:34:55,500 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 13:34:55,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:34:55,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1456789205, now seen corresponding path program 1 times [2021-11-07 13:34:55,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:34:55,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153539652] [2021-11-07 13:34:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:34:55,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:34:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:34:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:34:55,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:34:55,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153539652] [2021-11-07 13:34:55,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153539652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:34:55,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:34:55,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:34:55,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921675347] [2021-11-07 13:34:55,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:34:55,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:34:55,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:34:55,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:34:55,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:34:55,892 INFO L87 Difference]: Start difference. First operand 27508 states and 36524 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:34:57,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:34:57,631 INFO L93 Difference]: Finished difference Result 28920 states and 38542 transitions. [2021-11-07 13:34:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:34:57,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 13:34:57,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:34:57,703 INFO L225 Difference]: With dead ends: 28920 [2021-11-07 13:34:57,704 INFO L226 Difference]: Without dead ends: 28910 [2021-11-07 13:34:57,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:34:57,721 INFO L933 BasicCegarLoop]: 23548 mSDtfsCounter, 15946 mSDsluCounter, 7090 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1311.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15946 SdHoareTripleChecker+Valid, 30638 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.38ms SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1407.50ms IncrementalHoareTripleChecker+Time [2021-11-07 13:34:57,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15946 Valid, 30638 Invalid, 469 Unknown, 0 Unchecked, 22.38ms Time], IncrementalHoareTripleChecker [277 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 1407.50ms Time] [2021-11-07 13:34:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28910 states. [2021-11-07 13:34:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28910 to 27498. [2021-11-07 13:34:58,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27498 states, 27496 states have (on average 1.3278658713994762) internal successors, (36511), 27497 states have internal predecessors, (36511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:34:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27498 states to 27498 states and 36511 transitions. [2021-11-07 13:34:58,422 INFO L78 Accepts]: Start accepts. Automaton has 27498 states and 36511 transitions. Word has length 45 [2021-11-07 13:34:58,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:34:58,423 INFO L470 AbstractCegarLoop]: Abstraction has 27498 states and 36511 transitions. [2021-11-07 13:34:58,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:34:58,424 INFO L276 IsEmpty]: Start isEmpty. Operand 27498 states and 36511 transitions. [2021-11-07 13:34:58,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 13:34:58,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:34:58,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:34:58,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:34:58,432 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 13:34:58,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:34:58,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1265600915, now seen corresponding path program 1 times [2021-11-07 13:34:58,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:34:58,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278665898] [2021-11-07 13:34:58,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:34:58,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:34:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:34:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:34:58,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:34:58,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278665898] [2021-11-07 13:34:58,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278665898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:34:58,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:34:58,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:34:58,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815754155] [2021-11-07 13:34:58,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:34:58,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:34:58,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:34:58,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:34:58,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:34:58,792 INFO L87 Difference]: Start difference. First operand 27498 states and 36511 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:34:59,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:34:59,997 INFO L93 Difference]: Finished difference Result 78748 states and 104564 transitions. [2021-11-07 13:34:59,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:34:59,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 13:34:59,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:35:00,202 INFO L225 Difference]: With dead ends: 78748 [2021-11-07 13:35:00,202 INFO L226 Difference]: Without dead ends: 51280 [2021-11-07 13:35:00,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:35:00,240 INFO L933 BasicCegarLoop]: 29305 mSDtfsCounter, 19260 mSDsluCounter, 22370 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 261.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19260 SdHoareTripleChecker+Valid, 51675 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.61ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 289.42ms IncrementalHoareTripleChecker+Time [2021-11-07 13:35:00,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19260 Valid, 51675 Invalid, 20 Unknown, 0 Unchecked, 29.61ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 289.42ms Time] [2021-11-07 13:35:00,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51280 states. [2021-11-07 13:35:01,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51280 to 51278. [2021-11-07 13:35:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51278 states, 51276 states have (on average 1.3278336843747562) internal successors, (68086), 51277 states have internal predecessors, (68086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:35:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51278 states to 51278 states and 68086 transitions. [2021-11-07 13:35:01,234 INFO L78 Accepts]: Start accepts. Automaton has 51278 states and 68086 transitions. Word has length 57 [2021-11-07 13:35:01,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:35:01,234 INFO L470 AbstractCegarLoop]: Abstraction has 51278 states and 68086 transitions. [2021-11-07 13:35:01,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:35:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 51278 states and 68086 transitions. [2021-11-07 13:35:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 13:35:01,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:35:01,260 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:35:01,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:35:01,260 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 13:35:01,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:35:01,261 INFO L85 PathProgramCache]: Analyzing trace with hash 167429171, now seen corresponding path program 1 times [2021-11-07 13:35:01,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:35:01,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114301047] [2021-11-07 13:35:01,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:35:01,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:35:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:35:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:35:01,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:35:01,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114301047] [2021-11-07 13:35:01,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114301047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:35:01,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:35:01,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:35:01,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090441484] [2021-11-07 13:35:01,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:35:01,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:35:01,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:35:01,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:35:01,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:35:01,783 INFO L87 Difference]: Start difference. First operand 51278 states and 68086 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:35:03,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:35:05,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:35:05,290 INFO L93 Difference]: Finished difference Result 126330 states and 167754 transitions. [2021-11-07 13:35:05,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:35:05,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-07 13:35:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:35:05,417 INFO L225 Difference]: With dead ends: 126330 [2021-11-07 13:35:05,417 INFO L226 Difference]: Without dead ends: 75082 [2021-11-07 13:35:05,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:35:05,485 INFO L933 BasicCegarLoop]: 34764 mSDtfsCounter, 20647 mSDsluCounter, 20988 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2255.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20647 SdHoareTripleChecker+Valid, 55752 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.33ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2391.32ms IncrementalHoareTripleChecker+Time [2021-11-07 13:35:05,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20647 Valid, 55752 Invalid, 30 Unknown, 0 Unchecked, 33.33ms Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2391.32ms Time] [2021-11-07 13:35:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75082 states. [2021-11-07 13:35:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75082 to 75080. [2021-11-07 13:35:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75080 states, 75078 states have (on average 1.3278323876501772) internal successors, (99691), 75079 states have internal predecessors, (99691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:35:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75080 states to 75080 states and 99691 transitions. [2021-11-07 13:35:07,233 INFO L78 Accepts]: Start accepts. Automaton has 75080 states and 99691 transitions. Word has length 81 [2021-11-07 13:35:07,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:35:07,234 INFO L470 AbstractCegarLoop]: Abstraction has 75080 states and 99691 transitions. [2021-11-07 13:35:07,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:35:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 75080 states and 99691 transitions. [2021-11-07 13:35:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 13:35:07,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:35:07,260 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:35:07,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:35:07,260 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 13:35:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:35:07,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1190692929, now seen corresponding path program 1 times [2021-11-07 13:35:07,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:35:07,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981815743] [2021-11-07 13:35:07,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:35:07,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:35:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:35:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 13:35:07,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:35:07,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981815743] [2021-11-07 13:35:07,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981815743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:35:07,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:35:07,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:35:07,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588299235] [2021-11-07 13:35:07,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:35:07,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:35:07,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:35:07,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:35:07,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:35:07,664 INFO L87 Difference]: Start difference. First operand 75080 states and 99691 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:35:09,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:35:12,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:35:12,282 INFO L93 Difference]: Finished difference Result 175030 states and 232436 transitions. [2021-11-07 13:35:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:35:12,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-07 13:35:12,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted.