./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.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 a50782c14122c4e96fba85550d8baa150b55d4da62dbebbee116fe7764246c85 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 23:13:56,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 23:13:56,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 23:13:56,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 23:13:56,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 23:13:56,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 23:13:56,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 23:13:56,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 23:13:56,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 23:13:56,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 23:13:56,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 23:13:56,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 23:13:56,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 23:13:56,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 23:13:56,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 23:13:56,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 23:13:56,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 23:13:56,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 23:13:56,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 23:13:56,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 23:13:56,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 23:13:56,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 23:13:56,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 23:13:56,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 23:13:56,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 23:13:56,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 23:13:56,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 23:13:56,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 23:13:56,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 23:13:56,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 23:13:56,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 23:13:56,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 23:13:56,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 23:13:56,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 23:13:56,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 23:13:56,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 23:13:56,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 23:13:56,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 23:13:56,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 23:13:56,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 23:13:56,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 23:13:56,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 23:13:56,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 23:13:56,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 23:13:56,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 23:13:56,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 23:13:56,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 23:13:56,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 23:13:56,994 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 23:13:56,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 23:13:56,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 23:13:56,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 23:13:56,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 23:13:56,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 23:13:56,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 23:13:56,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 23:13:56,996 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 23:13:56,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 23:13:56,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 23:13:56,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 23:13:56,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 23:13:56,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:13:56,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 23:13:56,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 23:13:56,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 23:13:56,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 23:13:56,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 23:13:56,997 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 23:13:56,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 23:13:56,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 23:13:56,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 23:13:56,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50782c14122c4e96fba85550d8baa150b55d4da62dbebbee116fe7764246c85 [2021-11-22 23:13:57,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 23:13:57,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 23:13:57,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 23:13:57,213 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 23:13:57,214 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 23:13:57,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i [2021-11-22 23:13:57,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa7c44a9d/80a409ee1b0a41e892a89d5d58bd0d07/FLAGbf77a03a1 [2021-11-22 23:13:57,971 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 23:13:57,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i [2021-11-22 23:13:58,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa7c44a9d/80a409ee1b0a41e892a89d5d58bd0d07/FLAGbf77a03a1 [2021-11-22 23:13:58,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa7c44a9d/80a409ee1b0a41e892a89d5d58bd0d07 [2021-11-22 23:13:58,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 23:13:58,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 23:13:58,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 23:13:58,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 23:13:58,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 23:13:58,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:13:58" (1/1) ... [2021-11-22 23:13:58,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d300e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58, skipping insertion in model container [2021-11-22 23:13:58,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:13:58" (1/1) ... [2021-11-22 23:13:58,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 23:13:58,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 23:13:59,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i[198904,198917] [2021-11-22 23:14:00,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:14:00,915 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 23:14:01,029 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i[198904,198917] [2021-11-22 23:14:01,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:14:01,353 INFO L208 MainTranslator]: Completed translation [2021-11-22 23:14:01,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:01 WrapperNode [2021-11-22 23:14:01,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 23:14:01,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 23:14:01,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 23:14:01,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 23:14:01,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:01" (1/1) ... [2021-11-22 23:14:01,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:01" (1/1) ... [2021-11-22 23:14:02,783 INFO L137 Inliner]: procedures = 398, calls = 3556, calls flagged for inlining = 837, calls inlined = 4279, statements flattened = 53886 [2021-11-22 23:14:02,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 23:14:02,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 23:14:02,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 23:14:02,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 23:14:02,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:01" (1/1) ... [2021-11-22 23:14:02,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:01" (1/1) ... [2021-11-22 23:14:03,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:01" (1/1) ... [2021-11-22 23:14:03,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:01" (1/1) ... [2021-11-22 23:14:03,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:01" (1/1) ... [2021-11-22 23:14:03,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:01" (1/1) ... [2021-11-22 23:14:03,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:01" (1/1) ... [2021-11-22 23:14:04,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 23:14:04,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 23:14:04,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 23:14:04,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 23:14:04,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:01" (1/1) ... [2021-11-22 23:14:04,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:14:04,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 23:14:04,365 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) [2021-11-22 23:14:04,396 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 [2021-11-22 23:14:04,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-22 23:14:04,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 23:14:04,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 23:14:04,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 23:14:04,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 23:14:04,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 23:14:04,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 23:14:04,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 23:14:04,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 23:14:04,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 23:14:04,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 23:14:04,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 23:14:04,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 23:14:04,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 23:14:04,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 23:14:04,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 23:14:04,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 23:14:05,301 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 23:14:05,302 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 23:24:36,746 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 23:24:36,774 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 23:24:36,775 INFO L301 CfgBuilder]: Removed 44 assume(true) statements. [2021-11-22 23:24:36,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:24:36 BoogieIcfgContainer [2021-11-22 23:24:36,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 23:24:36,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 23:24:36,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 23:24:36,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 23:24:36,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:13:58" (1/3) ... [2021-11-22 23:24:36,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b880ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:24:36, skipping insertion in model container [2021-11-22 23:24:36,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:14:01" (2/3) ... [2021-11-22 23:24:36,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b880ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:24:36, skipping insertion in model container [2021-11-22 23:24:36,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:24:36" (3/3) ... [2021-11-22 23:24:36,789 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i [2021-11-22 23:24:36,793 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 23:24:36,793 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 23:24:36,855 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 23:24:36,870 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 [2021-11-22 23:24:36,871 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 23:24:36,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 8741 states, 8739 states have (on average 1.3636571690124728) internal successors, (11917), 8740 states have internal predecessors, (11917), 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) [2021-11-22 23:24:36,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-22 23:24:36,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:24:36,976 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] [2021-11-22 23:24:36,977 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:24:36,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:24:36,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1894360525, now seen corresponding path program 1 times [2021-11-22 23:24:36,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:24:36,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680772758] [2021-11-22 23:24:36,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:24:36,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:24:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:24:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:24:38,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:24:38,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680772758] [2021-11-22 23:24:38,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680772758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:24:38,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:24:38,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:24:38,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655427746] [2021-11-22 23:24:38,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:24:38,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:24:38,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:24:38,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:24:38,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:24:38,432 INFO L87 Difference]: Start difference. First operand has 8741 states, 8739 states have (on average 1.3636571690124728) internal successors, (11917), 8740 states have internal predecessors, (11917), 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 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-22 23:24:40,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 23:24:41,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:24:41,388 INFO L93 Difference]: Finished difference Result 26104 states and 35592 transitions. [2021-11-22 23:24:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:24:41,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-22 23:24:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:24:41,470 INFO L225 Difference]: With dead ends: 26104 [2021-11-22 23:24:41,470 INFO L226 Difference]: Without dead ends: 17216 [2021-11-22 23:24:41,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:24:41,501 INFO L933 BasicCegarLoop]: 11782 mSDtfsCounter, 11647 mSDsluCounter, 11769 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11647 SdHoareTripleChecker+Valid, 23551 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-22 23:24:41,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11647 Valid, 23551 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-22 23:24:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17216 states. [2021-11-22 23:24:41,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17216 to 17216. [2021-11-22 23:24:41,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17216 states, 17215 states have (on average 1.3438861458030786) internal successors, (23135), 17215 states have internal predecessors, (23135), 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) [2021-11-22 23:24:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17216 states to 17216 states and 23135 transitions. [2021-11-22 23:24:41,926 INFO L78 Accepts]: Start accepts. Automaton has 17216 states and 23135 transitions. Word has length 43 [2021-11-22 23:24:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:24:41,926 INFO L470 AbstractCegarLoop]: Abstraction has 17216 states and 23135 transitions. [2021-11-22 23:24:41,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-22 23:24:41,928 INFO L276 IsEmpty]: Start isEmpty. Operand 17216 states and 23135 transitions. [2021-11-22 23:24:41,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 23:24:41,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:24:41,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:24:41,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 23:24:41,931 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:24:41,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:24:41,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1279393616, now seen corresponding path program 1 times [2021-11-22 23:24:41,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:24:41,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878183498] [2021-11-22 23:24:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:24:41,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:24:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:24:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:24:42,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:24:42,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878183498] [2021-11-22 23:24:42,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878183498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:24:42,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:24:42,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 23:24:42,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439224716] [2021-11-22 23:24:42,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:24:42,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 23:24:42,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:24:42,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 23:24:42,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 23:24:42,905 INFO L87 Difference]: Start difference. First operand 17216 states and 23135 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:24:45,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:24:45,168 INFO L93 Difference]: Finished difference Result 34373 states and 46199 transitions. [2021-11-22 23:24:45,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 23:24:45,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-22 23:24:45,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:24:45,271 INFO L225 Difference]: With dead ends: 34373 [2021-11-22 23:24:45,271 INFO L226 Difference]: Without dead ends: 34366 [2021-11-22 23:24:45,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 23:24:45,291 INFO L933 BasicCegarLoop]: 11521 mSDtfsCounter, 11589 mSDsluCounter, 34492 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11589 SdHoareTripleChecker+Valid, 46013 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-22 23:24:45,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11589 Valid, 46013 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-22 23:24:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34366 states. [2021-11-22 23:24:45,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34366 to 34190. [2021-11-22 23:24:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34190 states, 34189 states have (on average 1.3446137646611482) internal successors, (45971), 34189 states have internal predecessors, (45971), 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) [2021-11-22 23:24:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34190 states to 34190 states and 45971 transitions. [2021-11-22 23:24:45,972 INFO L78 Accepts]: Start accepts. Automaton has 34190 states and 45971 transitions. Word has length 45 [2021-11-22 23:24:45,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:24:45,973 INFO L470 AbstractCegarLoop]: Abstraction has 34190 states and 45971 transitions. [2021-11-22 23:24:45,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:24:45,974 INFO L276 IsEmpty]: Start isEmpty. Operand 34190 states and 45971 transitions. [2021-11-22 23:24:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 23:24:46,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:24:46,006 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:24:46,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 23:24:46,010 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:24:46,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:24:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1106689570, now seen corresponding path program 1 times [2021-11-22 23:24:46,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:24:46,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568474197] [2021-11-22 23:24:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:24:46,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:24:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:24:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 23:24:47,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:24:47,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568474197] [2021-11-22 23:24:47,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568474197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:24:47,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:24:47,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:24:47,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871051881] [2021-11-22 23:24:47,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:24:47,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:24:47,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:24:47,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:24:47,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:24:47,264 INFO L87 Difference]: Start difference. First operand 34190 states and 45971 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-22 23:24:48,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:24:48,275 INFO L93 Difference]: Finished difference Result 94736 states and 127369 transitions. [2021-11-22 23:24:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:24:48,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 154 [2021-11-22 23:24:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:24:48,412 INFO L225 Difference]: With dead ends: 94736 [2021-11-22 23:24:48,412 INFO L226 Difference]: Without dead ends: 60605 [2021-11-22 23:24:48,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:24:48,478 INFO L933 BasicCegarLoop]: 11637 mSDtfsCounter, 9007 mSDsluCounter, 11499 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9007 SdHoareTripleChecker+Valid, 23136 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 23:24:48,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9007 Valid, 23136 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 23:24:48,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60605 states. [2021-11-22 23:24:49,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60605 to 60534. [2021-11-22 23:24:49,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60534 states, 60533 states have (on average 1.3444402226884509) internal successors, (81383), 60533 states have internal predecessors, (81383), 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) [2021-11-22 23:24:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60534 states to 60534 states and 81383 transitions. [2021-11-22 23:24:49,622 INFO L78 Accepts]: Start accepts. Automaton has 60534 states and 81383 transitions. Word has length 154 [2021-11-22 23:24:49,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:24:49,623 INFO L470 AbstractCegarLoop]: Abstraction has 60534 states and 81383 transitions. [2021-11-22 23:24:49,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-22 23:24:49,623 INFO L276 IsEmpty]: Start isEmpty. Operand 60534 states and 81383 transitions. [2021-11-22 23:24:49,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-22 23:24:49,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:24:49,673 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:24:49,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 23:24:49,673 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:24:49,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:24:49,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1163728965, now seen corresponding path program 1 times [2021-11-22 23:24:49,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:24:49,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766767026] [2021-11-22 23:24:49,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:24:49,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:24:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:24:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 23:24:51,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:24:51,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766767026] [2021-11-22 23:24:51,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766767026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:24:51,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:24:51,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:24:51,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919168253] [2021-11-22 23:24:51,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:24:51,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:24:51,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:24:51,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:24:51,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:24:51,098 INFO L87 Difference]: Start difference. First operand 60534 states and 81383 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-22 23:24:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:24:53,188 INFO L93 Difference]: Finished difference Result 176036 states and 236583 transitions. [2021-11-22 23:24:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:24:53,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 159 [2021-11-22 23:24:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:24:53,654 INFO L225 Difference]: With dead ends: 176036 [2021-11-22 23:24:53,655 INFO L226 Difference]: Without dead ends: 115561 [2021-11-22 23:24:53,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:24:53,951 INFO L933 BasicCegarLoop]: 14250 mSDtfsCounter, 10684 mSDsluCounter, 11547 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10684 SdHoareTripleChecker+Valid, 25797 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 23:24:53,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10684 Valid, 25797 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 23:24:54,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115561 states. [2021-11-22 23:24:56,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115561 to 115502. [2021-11-22 23:24:56,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115502 states, 115501 states have (on average 1.3436680201903013) internal successors, (155195), 115501 states have internal predecessors, (155195), 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) [2021-11-22 23:24:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115502 states to 115502 states and 155195 transitions. [2021-11-22 23:24:56,852 INFO L78 Accepts]: Start accepts. Automaton has 115502 states and 155195 transitions. Word has length 159 [2021-11-22 23:24:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:24:56,853 INFO L470 AbstractCegarLoop]: Abstraction has 115502 states and 155195 transitions. [2021-11-22 23:24:56,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-22 23:24:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand 115502 states and 155195 transitions. [2021-11-22 23:24:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-22 23:24:56,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:24:56,937 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:24:56,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 23:24:56,937 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:24:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:24:56,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1579425598, now seen corresponding path program 1 times [2021-11-22 23:24:56,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:24:56,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728404213] [2021-11-22 23:24:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:24:56,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:24:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:24:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 23:24:57,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:24:57,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728404213] [2021-11-22 23:24:57,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728404213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:24:57,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:24:57,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:24:57,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130652136] [2021-11-22 23:24:57,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:24:57,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:24:57,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:24:57,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:24:57,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:24:57,946 INFO L87 Difference]: Start difference. First operand 115502 states and 155195 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-22 23:25:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:25:01,534 INFO L93 Difference]: Finished difference Result 307048 states and 411961 transitions. [2021-11-22 23:25:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:25:01,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 159 [2021-11-22 23:25:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:25:01,987 INFO L225 Difference]: With dead ends: 307048 [2021-11-22 23:25:01,987 INFO L226 Difference]: Without dead ends: 191605 [2021-11-22 23:25:02,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:25:02,133 INFO L933 BasicCegarLoop]: 15178 mSDtfsCounter, 8220 mSDsluCounter, 11505 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8220 SdHoareTripleChecker+Valid, 26683 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 23:25:02,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8220 Valid, 26683 Invalid, 59 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 23:25:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191605 states. [2021-11-22 23:25:05,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191605 to 191598. [2021-11-22 23:25:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191598 states, 191597 states have (on average 1.3403915510159345) internal successors, (256815), 191597 states have internal predecessors, (256815), 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) [2021-11-22 23:25:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191598 states to 191598 states and 256815 transitions. [2021-11-22 23:25:06,233 INFO L78 Accepts]: Start accepts. Automaton has 191598 states and 256815 transitions. Word has length 159 [2021-11-22 23:25:06,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:25:06,234 INFO L470 AbstractCegarLoop]: Abstraction has 191598 states and 256815 transitions. [2021-11-22 23:25:06,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-22 23:25:06,235 INFO L276 IsEmpty]: Start isEmpty. Operand 191598 states and 256815 transitions. [2021-11-22 23:25:06,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-22 23:25:06,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:25:06,349 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:25:06,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 23:25:06,349 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:25:06,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:25:06,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1390363736, now seen corresponding path program 1 times [2021-11-22 23:25:06,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:25:06,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257406610] [2021-11-22 23:25:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:25:06,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:25:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:25:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 23:25:07,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:25:07,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257406610] [2021-11-22 23:25:07,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257406610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:25:07,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:25:07,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:25:07,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45748187] [2021-11-22 23:25:07,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:25:07,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:25:07,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:25:07,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:25:07,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:25:07,503 INFO L87 Difference]: Start difference. First operand 191598 states and 256815 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2021-11-22 23:25:12,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:25:12,720 INFO L93 Difference]: Finished difference Result 485716 states and 651935 transitions. [2021-11-22 23:25:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:25:12,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 172 [2021-11-22 23:25:12,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:25:13,351 INFO L225 Difference]: With dead ends: 485716 [2021-11-22 23:25:13,352 INFO L226 Difference]: Without dead ends: 294177 [2021-11-22 23:25:13,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:25:13,574 INFO L933 BasicCegarLoop]: 11632 mSDtfsCounter, 7898 mSDsluCounter, 11450 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7898 SdHoareTripleChecker+Valid, 23082 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 23:25:13,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7898 Valid, 23082 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 23:25:13,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294177 states.