./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 c36dfa3b 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-c36dfa3 [2021-11-04 04:50:42,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 04:50:42,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 04:50:42,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 04:50:42,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 04:50:42,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 04:50:42,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 04:50:42,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 04:50:42,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 04:50:42,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 04:50:42,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 04:50:42,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 04:50:42,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 04:50:42,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 04:50:42,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 04:50:42,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 04:50:42,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 04:50:42,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 04:50:42,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 04:50:42,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 04:50:42,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 04:50:42,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 04:50:42,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 04:50:42,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 04:50:42,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 04:50:42,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 04:50:42,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 04:50:42,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 04:50:42,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 04:50:42,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 04:50:42,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 04:50:42,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 04:50:42,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 04:50:42,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 04:50:42,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 04:50:42,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 04:50:42,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 04:50:42,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 04:50:42,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 04:50:42,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 04:50:42,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 04:50:42,748 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 04:50:42,762 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 04:50:42,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 04:50:42,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 04:50:42,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 04:50:42,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 04:50:42,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 04:50:42,764 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 04:50:42,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 04:50:42,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 04:50:42,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 04:50:42,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 04:50:42,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 04:50:42,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 04:50:42,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 04:50:42,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 04:50:42,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 04:50:42,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 04:50:42,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 04:50:42,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 04:50:42,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:50:42,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 04:50:42,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 04:50:42,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 04:50:42,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 04:50:42,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 04:50:42,768 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 04:50:42,768 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 04:50:42,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 04:50:42,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 04:50:42,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecea5961d53d2608898d65c83a7bf6d9a36712172eaf67bd828ea354982e0e3d [2021-11-04 04:50:42,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 04:50:42,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 04:50:42,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 04:50:42,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 04:50:42,980 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 04:50:42,982 INFO L432 ainManager$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 [2021-11-04 04:50:43,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1821c0244/ac758ce0e26a420ebd5a302f2651f76d/FLAGe64c25961 [2021-11-04 04:50:43,773 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 04:50:43,773 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 [2021-11-04 04:50:43,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1821c0244/ac758ce0e26a420ebd5a302f2651f76d/FLAGe64c25961 [2021-11-04 04:50:44,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1821c0244/ac758ce0e26a420ebd5a302f2651f76d [2021-11-04 04:50:44,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 04:50:44,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 04:50:44,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 04:50:44,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 04:50:44,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 04:50:44,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:50:44" (1/1) ... [2021-11-04 04:50:44,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22899ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:50:44, skipping insertion in model container [2021-11-04 04:50:44,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:50:44" (1/1) ... [2021-11-04 04:50:44,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 04:50:44,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 04:50:44,499 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5338] [2021-11-04 04:50:44,499 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] [2021-11-04 04:50:44,652 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] [2021-11-04 04:50:47,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:50:47,099 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 04:50:47,180 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5338] [2021-11-04 04:50:47,181 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] [2021-11-04 04:50:47,184 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] [2021-11-04 04:50:47,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:50:47,618 INFO L208 MainTranslator]: Completed translation [2021-11-04 04:50:47,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:50:47 WrapperNode [2021-11-04 04:50:47,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 04:50:47,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 04:50:47,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 04:50:47,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 04:50:47,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:50:47" (1/1) ... [2021-11-04 04:50:47,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:50:47" (1/1) ... [2021-11-04 04:50:50,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 04:50:50,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 04:50:50,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 04:50:50,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 04:50:50,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:50:47" (1/1) ... [2021-11-04 04:50:50,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:50:47" (1/1) ... [2021-11-04 04:50:50,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:50:47" (1/1) ... [2021-11-04 04:50:50,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:50:47" (1/1) ... [2021-11-04 04:50:51,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:50:47" (1/1) ... [2021-11-04 04:50:52,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:50:47" (1/1) ... [2021-11-04 04:50:52,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:50:47" (1/1) ... [2021-11-04 04:50:52,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 04:50:52,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 04:50:52,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 04:50:52,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 04:50:52,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:50:47" (1/1) ... [2021-11-04 04:50:52,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:50:52,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:50:52,622 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) [2021-11-04 04:50:52,635 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 [2021-11-04 04:50:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 04:50:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 04:50:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 04:50:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 04:50:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 04:50:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 04:50:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 04:50:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 04:50:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 04:50:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 04:50:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 04:50:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 04:50:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 04:50:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 04:50:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 04:51:19,351 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 04:51:19,352 INFO L299 CfgBuilder]: Removed 20027 assume(true) statements. [2021-11-04 04:51:19,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:51:19 BoogieIcfgContainer [2021-11-04 04:51:19,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 04:51:19,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 04:51:19,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 04:51:19,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 04:51:19,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:50:44" (1/3) ... [2021-11-04 04:51:19,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134cdcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:51:19, skipping insertion in model container [2021-11-04 04:51:19,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:50:47" (2/3) ... [2021-11-04 04:51:19,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134cdcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:51:19, skipping insertion in model container [2021-11-04 04:51:19,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:51:19" (3/3) ... [2021-11-04 04:51:19,376 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 [2021-11-04 04:51:19,380 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 04:51:19,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-04 04:51:19,456 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 04:51:19,460 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 [2021-11-04 04:51:19,461 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-04 04:51:19,634 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) [2021-11-04 04:51:19,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-04 04:51:19,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:51:19,649 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] [2021-11-04 04:51:19,649 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)] === [2021-11-04 04:51:19,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:51:19,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2025150548, now seen corresponding path program 1 times [2021-11-04 04:51:19,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:51:19,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55072431] [2021-11-04 04:51:19,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:51:19,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:51:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:51:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:51:20,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:51:20,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55072431] [2021-11-04 04:51:20,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55072431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:51:20,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:51:20,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:51:20,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252807086] [2021-11-04 04:51:20,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:51:20,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:51:20,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:51:20,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:51:20,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:51:20,453 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) [2021-11-04 04:51:22,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:56:00,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:56:00,489 INFO L93 Difference]: Finished difference Result 36632 states and 50207 transitions. [2021-11-04 04:56:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:56:00,491 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 [2021-11-04 04:56:00,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:56:00,571 INFO L225 Difference]: With dead ends: 36632 [2021-11-04 04:56:00,572 INFO L226 Difference]: Without dead ends: 18225 [2021-11-04 04:56:00,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:56:00,613 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 24989 mSDsCounter, 0 mSdLazyCounter, 49913 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 264975.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 49914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 320.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49913 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 277253.49ms IncrementalHoareTripleChecker+Time [2021-11-04 04:56:00,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 49914 Unknown, 0 Unchecked, 320.08ms Time], IncrementalHoareTripleChecker [0 Valid, 49913 Invalid, 1 Unknown, 0 Unchecked, 277253.49ms Time] [2021-11-04 04:56:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18225 states. [2021-11-04 04:56:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18225 to 18225. [2021-11-04 04:56:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18225 states, 18218 states have (on average 1.3662860906795478) internal successors, (24891), 18224 states have internal predecessors, (24891), 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) [2021-11-04 04:56:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18225 states to 18225 states and 24891 transitions. [2021-11-04 04:56:01,103 INFO L78 Accepts]: Start accepts. Automaton has 18225 states and 24891 transitions. Word has length 36 [2021-11-04 04:56:01,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:56:01,104 INFO L470 AbstractCegarLoop]: Abstraction has 18225 states and 24891 transitions. [2021-11-04 04:56:01,104 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) [2021-11-04 04:56:01,105 INFO L276 IsEmpty]: Start isEmpty. Operand 18225 states and 24891 transitions. [2021-11-04 04:56:01,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-04 04:56:01,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:56:01,110 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] [2021-11-04 04:56:01,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 04:56:01,110 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-04 04:56:01,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:56:01,112 INFO L85 PathProgramCache]: Analyzing trace with hash 721741364, now seen corresponding path program 1 times [2021-11-04 04:56:01,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:56:01,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943119225] [2021-11-04 04:56:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:56:01,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:56:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:56:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 04:56:01,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:56:01,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943119225] [2021-11-04 04:56:01,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943119225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:56:01,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:56:01,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:56:01,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748668341] [2021-11-04 04:56:01,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:56:01,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:56:01,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:56:01,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:56:01,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:56:01,928 INFO L87 Difference]: Start difference. First operand 18225 states and 24891 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-11-04 04:56:04,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:01:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:01:27,305 INFO L93 Difference]: Finished difference Result 48934 states and 66850 transitions. [2021-11-04 05:01:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:01:27,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2021-11-04 05:01:27,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:01:27,395 INFO L225 Difference]: With dead ends: 48934 [2021-11-04 05:01:27,395 INFO L226 Difference]: Without dead ends: 30740 [2021-11-04 05:01:27,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:01:27,421 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 17155 mSDsluCounter, 24737 mSDsCounter, 0 mSdLazyCounter, 49712 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 307878.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17155 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 281.19ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 49712 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 321769.19ms IncrementalHoareTripleChecker+Time [2021-11-04 05:01:27,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17155 Valid, 0 Invalid, 49722 Unknown, 0 Unchecked, 281.19ms Time], IncrementalHoareTripleChecker [9 Valid, 49712 Invalid, 1 Unknown, 0 Unchecked, 321769.19ms Time] [2021-11-04 05:01:27,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30740 states. [2021-11-04 05:01:27,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30740 to 29792. [2021-11-04 05:01:27,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29792 states, 29785 states have (on average 1.3668289407419842) internal successors, (40711), 29791 states have internal predecessors, (40711), 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) [2021-11-04 05:01:28,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29792 states to 29792 states and 40711 transitions. [2021-11-04 05:01:28,011 INFO L78 Accepts]: Start accepts. Automaton has 29792 states and 40711 transitions. Word has length 37 [2021-11-04 05:01:28,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:01:28,011 INFO L470 AbstractCegarLoop]: Abstraction has 29792 states and 40711 transitions. [2021-11-04 05:01:28,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-11-04 05:01:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 29792 states and 40711 transitions. [2021-11-04 05:01:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-04 05:01:28,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:01:28,018 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] [2021-11-04 05:01:28,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 05:01:28,018 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)] === [2021-11-04 05:01:28,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:01:28,019 INFO L85 PathProgramCache]: Analyzing trace with hash -332296433, now seen corresponding path program 1 times [2021-11-04 05:01:28,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:01:28,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341086252] [2021-11-04 05:01:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:01:28,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:01:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:01:28,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 05:01:28,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:01:28,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341086252] [2021-11-04 05:01:28,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341086252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:01:28,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:01:28,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:01:28,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412803078] [2021-11-04 05:01:28,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:01:28,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:01:28,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:01:28,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:01:28,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:01:28,512 INFO L87 Difference]: Start difference. First operand 29792 states and 40711 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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) [2021-11-04 05:01:30,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:03:56,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:03:56,647 INFO L93 Difference]: Finished difference Result 57270 states and 78231 transitions. [2021-11-04 05:03:56,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:03:56,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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 46 [2021-11-04 05:03:56,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:03:56,712 INFO L225 Difference]: With dead ends: 57270 [2021-11-04 05:03:56,713 INFO L226 Difference]: Without dead ends: 27509 [2021-11-04 05:03:56,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:03:56,763 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22398 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22433 mSolverCounterSat, 611 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139142.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22398 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 102.12ms SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 22433 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 145656.71ms IncrementalHoareTripleChecker+Time [2021-11-04 05:03:56,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22398 Valid, 0 Invalid, 23045 Unknown, 0 Unchecked, 102.12ms Time], IncrementalHoareTripleChecker [611 Valid, 22433 Invalid, 1 Unknown, 0 Unchecked, 145656.71ms Time] [2021-11-04 05:03:56,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27509 states. [2021-11-04 05:03:57,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27509 to 27509. [2021-11-04 05:03:57,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27509 states, 27502 states have (on average 1.328085230165079) internal successors, (36525), 27508 states have internal predecessors, (36525), 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) [2021-11-04 05:03:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27509 states to 27509 states and 36525 transitions. [2021-11-04 05:03:57,437 INFO L78 Accepts]: Start accepts. Automaton has 27509 states and 36525 transitions. Word has length 46 [2021-11-04 05:03:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:03:57,438 INFO L470 AbstractCegarLoop]: Abstraction has 27509 states and 36525 transitions. [2021-11-04 05:03:57,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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) [2021-11-04 05:03:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 27509 states and 36525 transitions. [2021-11-04 05:03:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-04 05:03:57,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:03:57,446 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] [2021-11-04 05:03:57,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 05:03:57,446 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-04 05:03:57,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:03:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash -725323443, now seen corresponding path program 1 times [2021-11-04 05:03:57,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:03:57,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516167780] [2021-11-04 05:03:57,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:03:57,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:03:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:03:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 05:03:57,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:03:57,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516167780] [2021-11-04 05:03:57,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516167780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:03:57,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:03:57,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:03:57,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658457676] [2021-11-04 05:03:57,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:03:57,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:03:57,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:03:57,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:03:57,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:03:57,884 INFO L87 Difference]: Start difference. First operand 27509 states and 36525 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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) [2021-11-04 05:04:00,007 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 [] Killed by 15