./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--net--ethernet--3com--3c59x.ko-main.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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--net--ethernet--3com--3c59x.ko-main.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 3c7180be0629e9a0656fd9fc52d5b3ae804deb1e2c1641d5e88fc72d6eeae4e4 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 12:20:05,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:20:05,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:20:05,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:20:05,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:20:05,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:20:05,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:20:05,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:20:05,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:20:05,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:20:05,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:20:05,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:20:05,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:20:05,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:20:05,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:20:05,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:20:05,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:20:05,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:20:05,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:20:05,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:20:05,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:20:05,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:20:05,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:20:05,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:20:05,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:20:05,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:20:05,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:20:05,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:20:05,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:20:05,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:20:05,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:20:05,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:20:05,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:20:05,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:20:05,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:20:05,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:20:05,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:20:05,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:20:05,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:20:05,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:20:05,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:20:05,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:20:05,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:20:05,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:20:05,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:20:05,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:20:05,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:20:05,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:20:05,479 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:20:05,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:20:05,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:20:05,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:20:05,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:20:05,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:20:05,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:20:05,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:20:05,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:20:05,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:20:05,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:20:05,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:20:05,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:20:05,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:20:05,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:20:05,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:20:05,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:20:05,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:20:05,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:20:05,483 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:20:05,483 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:20:05,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:20:05,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:20:05,483 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c7180be0629e9a0656fd9fc52d5b3ae804deb1e2c1641d5e88fc72d6eeae4e4 [2021-11-07 12:20:05,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:20:05,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:20:05,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:20:05,707 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:20:05,708 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:20:05,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--net--ethernet--3com--3c59x.ko-main.cil.out.i [2021-11-07 12:20:05,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ab6e42e6/844053efc64c40069085288f380b1b59/FLAGb3d9fa1d9 [2021-11-07 12:20:06,434 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:20:06,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--net--ethernet--3com--3c59x.ko-main.cil.out.i [2021-11-07 12:20:06,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ab6e42e6/844053efc64c40069085288f380b1b59/FLAGb3d9fa1d9 [2021-11-07 12:20:06,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ab6e42e6/844053efc64c40069085288f380b1b59 [2021-11-07 12:20:06,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:20:06,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:20:06,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:20:06,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:20:06,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:20:06,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:20:06" (1/1) ... [2021-11-07 12:20:06,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e66a122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:06, skipping insertion in model container [2021-11-07 12:20:06,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:20:06" (1/1) ... [2021-11-07 12:20:06,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:20:06,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:20:08,404 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--net--ethernet--3com--3c59x.ko-main.cil.out.i[346956,346969] [2021-11-07 12:20:08,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:20:08,557 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:20:08,821 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--net--ethernet--3com--3c59x.ko-main.cil.out.i[346956,346969] [2021-11-07 12:20:08,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:20:08,987 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:20:08,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:08 WrapperNode [2021-11-07 12:20:08,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:20:08,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:20:08,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:20:08,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:20:08,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:08" (1/1) ... [2021-11-07 12:20:09,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:08" (1/1) ... [2021-11-07 12:20:17,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:20:17,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:20:17,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:20:17,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:20:17,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:08" (1/1) ... [2021-11-07 12:20:17,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:08" (1/1) ... [2021-11-07 12:20:18,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:08" (1/1) ... [2021-11-07 12:20:18,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:08" (1/1) ... [2021-11-07 12:20:20,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:08" (1/1) ... [2021-11-07 12:20:21,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:08" (1/1) ... [2021-11-07 12:20:21,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:08" (1/1) ... [2021-11-07 12:20:22,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:20:22,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:20:22,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:20:22,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:20:22,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:08" (1/1) ... [2021-11-07 12:20:22,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:20:23,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:20:23,009 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 12:20:23,014 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 12:20:23,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 12:20:23,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 12:20:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:20:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:20:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:20:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:20:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 12:20:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 12:20:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:20:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:20:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:20:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:20:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:20:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:20:23,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:21:41,390 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:21:41,390 INFO L299 CfgBuilder]: Removed 61348 assume(true) statements. [2021-11-07 12:21:41,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:21:41 BoogieIcfgContainer [2021-11-07 12:21:41,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:21:41,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:21:41,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:21:41,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:21:41,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:20:06" (1/3) ... [2021-11-07 12:21:41,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570267c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:21:41, skipping insertion in model container [2021-11-07 12:21:41,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:08" (2/3) ... [2021-11-07 12:21:41,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570267c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:21:41, skipping insertion in model container [2021-11-07 12:21:41,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:21:41" (3/3) ... [2021-11-07 12:21:41,429 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--net--ethernet--3com--3c59x.ko-main.cil.out.i [2021-11-07 12:21:41,434 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:21:41,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 12:21:41,555 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:21:41,563 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 12:21:41,563 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 12:21:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 41645 states, 41641 states have (on average 1.2740328042073918) internal successors, (53052), 41644 states have internal predecessors, (53052), 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 12:21:41,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 12:21:41,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:21:41,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:21:41,878 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 12:21:41,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:21:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash 509530574, now seen corresponding path program 1 times [2021-11-07 12:21:41,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:21:41,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253268402] [2021-11-07 12:21:41,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:21:41,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:21:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:21:42,723 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 12:21:42,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:21:42,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253268402] [2021-11-07 12:21:42,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253268402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:21:42,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:21:42,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:21:42,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021127957] [2021-11-07 12:21:42,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:21:42,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:21:42,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:21:42,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:21:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:21:42,795 INFO L87 Difference]: Start difference. First operand has 41645 states, 41641 states have (on average 1.2740328042073918) internal successors, (53052), 41644 states have internal predecessors, (53052), 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 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 12:21:44,909 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 12:21:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:21:46,639 INFO L93 Difference]: Finished difference Result 124005 states and 157981 transitions. [2021-11-07 12:21:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:21:46,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2021-11-07 12:21:46,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:21:46,893 INFO L225 Difference]: With dead ends: 124005 [2021-11-07 12:21:46,894 INFO L226 Difference]: Without dead ends: 81996 [2021-11-07 12:21:46,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:21:46,995 INFO L933 BasicCegarLoop]: 53048 mSDtfsCounter, 53006 mSDsluCounter, 51902 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2110.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53006 SdHoareTripleChecker+Valid, 104950 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 141.55ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2209.10ms IncrementalHoareTripleChecker+Time [2021-11-07 12:21:46,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53006 Valid, 104950 Invalid, 16 Unknown, 0 Unchecked, 141.55ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2209.10ms Time] [2021-11-07 12:21:47,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81996 states. [2021-11-07 12:21:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81996 to 81996. [2021-11-07 12:21:48,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81996 states, 81993 states have (on average 1.2707914090227215) internal successors, (104196), 81995 states have internal predecessors, (104196), 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 12:21:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81996 states to 81996 states and 104196 transitions. [2021-11-07 12:21:49,127 INFO L78 Accepts]: Start accepts. Automaton has 81996 states and 104196 transitions. Word has length 15 [2021-11-07 12:21:49,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:21:49,127 INFO L470 AbstractCegarLoop]: Abstraction has 81996 states and 104196 transitions. [2021-11-07 12:21:49,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 12:21:49,128 INFO L276 IsEmpty]: Start isEmpty. Operand 81996 states and 104196 transitions. [2021-11-07 12:21:49,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 12:21:49,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:21:49,133 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] [2021-11-07 12:21:49,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:21:49,134 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 12:21:49,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:21:49,134 INFO L85 PathProgramCache]: Analyzing trace with hash -399860118, now seen corresponding path program 1 times [2021-11-07 12:21:49,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:21:49,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689046119] [2021-11-07 12:21:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:21:49,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:21:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:21:49,482 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 12:21:49,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:21:49,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689046119] [2021-11-07 12:21:49,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689046119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:21:49,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:21:49,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:21:49,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804407577] [2021-11-07 12:21:49,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:21:49,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:21:49,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:21:49,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:21:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:21:49,485 INFO L87 Difference]: Start difference. First operand 81996 states and 104196 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 12:21:51,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:21:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:21:55,536 INFO L93 Difference]: Finished difference Result 327975 states and 416775 transitions. [2021-11-07 12:21:55,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:21:55,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2021-11-07 12:21:55,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:21:56,097 INFO L225 Difference]: With dead ends: 327975 [2021-11-07 12:21:56,098 INFO L226 Difference]: Without dead ends: 245982 [2021-11-07 12:21:56,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.96ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:21:56,380 INFO L933 BasicCegarLoop]: 105320 mSDtfsCounter, 158020 mSDsluCounter, 105345 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2111.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158020 SdHoareTripleChecker+Valid, 210665 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 158.53ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2274.01ms IncrementalHoareTripleChecker+Time [2021-11-07 12:21:56,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158020 Valid, 210665 Invalid, 20 Unknown, 0 Unchecked, 158.53ms Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 2274.01ms Time] [2021-11-07 12:21:56,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245982 states. [2021-11-07 12:22:01,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245982 to 245941. [2021-11-07 12:22:01,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245941 states, 245938 states have (on average 1.270783693451195) internal successors, (312534), 245940 states have internal predecessors, (312534), 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 12:22:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245941 states to 245941 states and 312534 transitions. [2021-11-07 12:22:02,583 INFO L78 Accepts]: Start accepts. Automaton has 245941 states and 312534 transitions. Word has length 24 [2021-11-07 12:22:02,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:02,584 INFO L470 AbstractCegarLoop]: Abstraction has 245941 states and 312534 transitions. [2021-11-07 12:22:02,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 12:22:02,584 INFO L276 IsEmpty]: Start isEmpty. Operand 245941 states and 312534 transitions. [2021-11-07 12:22:02,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 12:22:02,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:02,587 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] [2021-11-07 12:22:02,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:22:02,587 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 12:22:02,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:02,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2120099816, now seen corresponding path program 1 times [2021-11-07 12:22:02,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:02,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480810155] [2021-11-07 12:22:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:02,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:02,878 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 12:22:02,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:02,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480810155] [2021-11-07 12:22:02,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480810155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:02,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:02,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:22:02,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398708396] [2021-11-07 12:22:02,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:02,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:22:02,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:02,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:22:02,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:22:02,881 INFO L87 Difference]: Start difference. First operand 245941 states and 312534 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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)