./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--renesas--sh_eth.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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--renesas--sh_eth.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 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 16:39:02,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:39:02,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:39:02,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:39:02,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:39:02,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:39:02,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:39:02,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:39:02,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:39:02,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:39:02,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:39:02,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:39:02,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:39:02,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:39:02,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:39:02,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:39:02,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:39:02,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:39:02,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:39:02,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:39:02,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:39:02,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:39:02,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:39:02,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:39:02,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:39:02,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:39:02,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:39:02,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:39:02,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:39:02,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:39:02,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:39:02,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:39:02,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:39:02,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:39:02,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:39:02,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:39:02,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:39:02,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:39:02,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:39:02,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:39:02,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:39:02,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:39:02,969 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:39:02,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:39:02,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:39:02,970 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:39:02,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:39:02,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:39:02,972 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:39:02,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:39:02,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:39:02,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:39:02,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:39:02,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:39:02,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:39:02,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:39:02,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:39:02,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:39:02,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:39:02,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:39:02,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:39:02,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:39:02,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:39:02,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:39:02,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:39:02,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:39:02,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:39:02,975 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:39:02,976 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:39:02,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:39:02,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:39:02,976 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d [2021-11-05 16:39:03,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:39:03,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:39:03,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:39:03,250 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:39:03,251 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:39:03,251 INFO L432 ainManager$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--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-05 16:39:03,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbceca1df/41d66713e2844b1182c5e0ede143d4d4/FLAG2f7d0cc9e [2021-11-05 16:39:03,891 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:39:03,892 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--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-05 16:39:03,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbceca1df/41d66713e2844b1182c5e0ede143d4d4/FLAG2f7d0cc9e [2021-11-05 16:39:04,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbceca1df/41d66713e2844b1182c5e0ede143d4d4 [2021-11-05 16:39:04,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:39:04,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:39:04,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:39:04,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:39:04,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:39:04,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:39:04" (1/1) ... [2021-11-05 16:39:04,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e1144f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:39:04, skipping insertion in model container [2021-11-05 16:39:04,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:39:04" (1/1) ... [2021-11-05 16:39:04,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:39:04,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:39:04,900 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-05 16:39:05,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:39:05,840 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:39:05,947 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-05 16:39:06,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:39:06,402 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:39:06,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:39:06 WrapperNode [2021-11-05 16:39:06,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:39:06,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:39:06,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:39:06,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:39:06,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:39:06" (1/1) ... [2021-11-05 16:39:06,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:39:06" (1/1) ... [2021-11-05 16:39:07,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:39:07,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:39:07,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:39:07,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:39:07,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:39:06" (1/1) ... [2021-11-05 16:39:07,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:39:06" (1/1) ... [2021-11-05 16:39:07,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:39:06" (1/1) ... [2021-11-05 16:39:07,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:39:06" (1/1) ... [2021-11-05 16:39:08,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:39:06" (1/1) ... [2021-11-05 16:39:08,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:39:06" (1/1) ... [2021-11-05 16:39:08,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:39:06" (1/1) ... [2021-11-05 16:39:08,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:39:08,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:39:08,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:39:08,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:39:08,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:39:06" (1/1) ... [2021-11-05 16:39:08,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:39:08,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:39:08,384 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) [2021-11-05 16:39:08,402 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 [2021-11-05 16:39:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:39:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:39:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-05 16:39:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:39:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:39:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-05 16:39:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tx_timeout [2021-11-05 16:39:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tx_timeout [2021-11-05 16:39:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:39:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:39:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:39:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:39:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:39:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_dev_init [2021-11-05 16:39:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_dev_init [2021-11-05 16:39:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:39:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_adjust_link [2021-11-05 16:39:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_adjust_link [2021-11-05 16:39:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-05 16:39:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:39:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:39:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 16:39:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:39:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:39:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:39:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:39:08,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:40:08,071 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:40:08,071 INFO L299 CfgBuilder]: Removed 6872 assume(true) statements. [2021-11-05 16:40:08,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:40:08 BoogieIcfgContainer [2021-11-05 16:40:08,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:40:08,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:40:08,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:40:08,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:40:08,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:39:04" (1/3) ... [2021-11-05 16:40:08,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f55e027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:40:08, skipping insertion in model container [2021-11-05 16:40:08,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:39:06" (2/3) ... [2021-11-05 16:40:08,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f55e027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:40:08, skipping insertion in model container [2021-11-05 16:40:08,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:40:08" (3/3) ... [2021-11-05 16:40:08,096 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-05 16:40:08,099 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:40:08,100 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-05 16:40:08,146 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:40:08,150 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 [2021-11-05 16:40:08,151 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-05 16:40:08,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 5535 states, 5508 states have (on average 1.3169934640522876) internal successors, (7254), 5511 states have internal predecessors, (7254), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-05 16:40:08,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-05 16:40:08,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:40:08,227 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] [2021-11-05 16:40:08,228 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:40:08,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:40:08,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2021068076, now seen corresponding path program 1 times [2021-11-05 16:40:08,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:40:08,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999631351] [2021-11-05 16:40:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:40:08,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:40:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:40:08,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:40:08,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999631351] [2021-11-05 16:40:08,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999631351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:40:08,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:40:08,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:40:08,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070625939] [2021-11-05 16:40:08,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:40:08,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:40:08,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:40:08,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:40:08,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:40:08,858 INFO L87 Difference]: Start difference. First operand has 5535 states, 5508 states have (on average 1.3169934640522876) internal successors, (7254), 5511 states have internal predecessors, (7254), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-05 16:40:10,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:40:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:40:11,357 INFO L93 Difference]: Finished difference Result 16284 states and 21510 transitions. [2021-11-05 16:40:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:40:11,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-11-05 16:40:11,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:40:11,409 INFO L225 Difference]: With dead ends: 16284 [2021-11-05 16:40:11,409 INFO L226 Difference]: Without dead ends: 10658 [2021-11-05 16:40:11,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:40:11,439 INFO L933 BasicCegarLoop]: 7116 mSDtfsCounter, 6825 mSDsluCounter, 7072 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2085.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6825 SdHoareTripleChecker+Valid, 14188 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.41ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2179.32ms IncrementalHoareTripleChecker+Time [2021-11-05 16:40:11,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6825 Valid, 14188 Invalid, 15 Unknown, 0 Unchecked, 36.41ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2179.32ms Time] [2021-11-05 16:40:11,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10658 states. [2021-11-05 16:40:11,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10658 to 10658. [2021-11-05 16:40:11,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10658 states, 10607 states have (on average 1.2864146318468936) internal successors, (13645), 10611 states have internal predecessors, (13645), 42 states have call successors, (42), 8 states have call predecessors, (42), 8 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-05 16:40:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10658 states to 10658 states and 13729 transitions. [2021-11-05 16:40:11,745 INFO L78 Accepts]: Start accepts. Automaton has 10658 states and 13729 transitions. Word has length 40 [2021-11-05 16:40:11,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:40:11,745 INFO L470 AbstractCegarLoop]: Abstraction has 10658 states and 13729 transitions. [2021-11-05 16:40:11,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-05 16:40:11,747 INFO L276 IsEmpty]: Start isEmpty. Operand 10658 states and 13729 transitions. [2021-11-05 16:40:11,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-05 16:40:11,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:40:11,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:40:11,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:40:11,754 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:40:11,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:40:11,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1447356308, now seen corresponding path program 1 times [2021-11-05 16:40:11,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:40:11,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630750139] [2021-11-05 16:40:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:40:11,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:40:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:40:12,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:40:12,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630750139] [2021-11-05 16:40:12,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630750139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:40:12,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:40:12,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:40:12,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282070516] [2021-11-05 16:40:12,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:40:12,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:40:12,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:40:12,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:40:12,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:40:12,080 INFO L87 Difference]: Start difference. First operand 10658 states and 13729 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-05 16:40:13,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:40:13,128 INFO L93 Difference]: Finished difference Result 31796 states and 41072 transitions. [2021-11-05 16:40:13,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:40:13,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 47 [2021-11-05 16:40:13,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:40:13,231 INFO L225 Difference]: With dead ends: 31796 [2021-11-05 16:40:13,232 INFO L226 Difference]: Without dead ends: 21221 [2021-11-05 16:40:13,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.51ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:40:13,276 INFO L933 BasicCegarLoop]: 6977 mSDtfsCounter, 6960 mSDsluCounter, 20802 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 308.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6960 SdHoareTripleChecker+Valid, 27779 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.76ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 372.31ms IncrementalHoareTripleChecker+Time [2021-11-05 16:40:13,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6960 Valid, 27779 Invalid, 303 Unknown, 0 Unchecked, 36.76ms Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 372.31ms Time] [2021-11-05 16:40:13,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21221 states. [2021-11-05 16:40:13,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21221 to 21109. [2021-11-05 16:40:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21109 states, 21008 states have (on average 1.2871287128712872) internal successors, (27040), 21016 states have internal predecessors, (27040), 84 states have call successors, (84), 16 states have call predecessors, (84), 16 states have return successors, (126), 80 states have call predecessors, (126), 84 states have call successors, (126) [2021-11-05 16:40:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21109 states to 21109 states and 27250 transitions. [2021-11-05 16:40:13,755 INFO L78 Accepts]: Start accepts. Automaton has 21109 states and 27250 transitions. Word has length 47 [2021-11-05 16:40:13,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:40:13,760 INFO L470 AbstractCegarLoop]: Abstraction has 21109 states and 27250 transitions. [2021-11-05 16:40:13,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-05 16:40:13,761 INFO L276 IsEmpty]: Start isEmpty. Operand 21109 states and 27250 transitions. [2021-11-05 16:40:13,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-05 16:40:13,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:40:13,789 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:40:13,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:40:13,789 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:40:13,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:40:13,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1167649304, now seen corresponding path program 1 times [2021-11-05 16:40:13,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:40:13,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049545969] [2021-11-05 16:40:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:40:13,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:40:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:14,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-05 16:40:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:40:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:40:14,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:40:14,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049545969] [2021-11-05 16:40:14,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049545969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:40:14,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:40:14,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:40:14,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73170957] [2021-11-05 16:40:14,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:40:14,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:40:14,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:40:14,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:40:14,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:40:14,153 INFO L87 Difference]: Start difference. First operand 21109 states and 27250 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-05 16:40:16,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:40:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:40:20,835 INFO L93 Difference]: Finished difference Result 56447 states and 73120 transitions. [2021-11-05 16:40:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:40:20,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 136 [2021-11-05 16:40:20,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:40:20,960 INFO L225 Difference]: With dead ends: 56447 [2021-11-05 16:40:20,960 INFO L226 Difference]: Without dead ends: 35426 [2021-11-05 16:40:21,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:40:21,053 INFO L933 BasicCegarLoop]: 6941 mSDtfsCounter, 5416 mSDsluCounter, 11637 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5417.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5420 SdHoareTripleChecker+Valid, 18578 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.52ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6066.52ms IncrementalHoareTripleChecker+Time [2021-11-05 16:40:21,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5420 Valid, 18578 Invalid, 2166 Unknown, 0 Unchecked, 33.52ms Time], IncrementalHoareTripleChecker [60 Valid, 2105 Invalid, 1 Unknown, 0 Unchecked, 6066.52ms Time] [2021-11-05 16:40:21,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35426 states. [2021-11-05 16:40:21,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35426 to 35143. [2021-11-05 16:40:21,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35143 states, 34946 states have (on average 1.2917930521375838) internal successors, (45143), 34974 states have internal predecessors, (45143), 152 states have call successors, (152), 32 states have call predecessors, (152), 44 states have return successors, (282), 148 states have call predecessors, (282), 152 states have call successors, (282) [2021-11-05 16:40:22,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35143 states to 35143 states and 45577 transitions. [2021-11-05 16:40:22,056 INFO L78 Accepts]: Start accepts. Automaton has 35143 states and 45577 transitions. Word has length 136 [2021-11-05 16:40:22,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:40:22,057 INFO L470 AbstractCegarLoop]: Abstraction has 35143 states and 45577 transitions. [2021-11-05 16:40:22,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-05 16:40:22,057 INFO L276 IsEmpty]: Start isEmpty. Operand 35143 states and 45577 transitions. [2021-11-05 16:40:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-05 16:40:22,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:40:22,080 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:40:22,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:40:22,081 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:40:22,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:40:22,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1313962223, now seen corresponding path program 1 times [2021-11-05 16:40:22,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:40:22,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181753420] [2021-11-05 16:40:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:40:22,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:40:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:22,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-05 16:40:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:22,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:40:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:40:22,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:40:22,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181753420] [2021-11-05 16:40:22,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181753420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:40:22,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:40:22,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:40:22,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88782143] [2021-11-05 16:40:22,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:40:22,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:40:22,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:40:22,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:40:22,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:40:22,370 INFO L87 Difference]: Start difference. First operand 35143 states and 45577 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-05 16:40:24,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:40:29,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:40:29,314 INFO L93 Difference]: Finished difference Result 65446 states and 84913 transitions. [2021-11-05 16:40:29,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:40:29,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 135 [2021-11-05 16:40:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:40:29,428 INFO L225 Difference]: With dead ends: 65446 [2021-11-05 16:40:29,428 INFO L226 Difference]: Without dead ends: 30391 [2021-11-05 16:40:29,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:40:29,514 INFO L933 BasicCegarLoop]: 6097 mSDtfsCounter, 6544 mSDsluCounter, 4332 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5510.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6548 SdHoareTripleChecker+Valid, 10429 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.81ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6247.02ms IncrementalHoareTripleChecker+Time [2021-11-05 16:40:29,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6548 Valid, 10429 Invalid, 1703 Unknown, 0 Unchecked, 25.81ms Time], IncrementalHoareTripleChecker [33 Valid, 1669 Invalid, 1 Unknown, 0 Unchecked, 6247.02ms Time] [2021-11-05 16:40:29,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30391 states. [2021-11-05 16:40:30,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30391 to 30143. [2021-11-05 16:40:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30143 states, 29978 states have (on average 1.2918473547267997) internal successors, (38727), 30006 states have internal predecessors, (38727), 120 states have call successors, (120), 32 states have call predecessors, (120), 44 states have return successors, (230), 116 states have call predecessors, (230), 120 states have call successors, (230) [2021-11-05 16:40:30,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30143 states to 30143 states and 39077 transitions. [2021-11-05 16:40:30,411 INFO L78 Accepts]: Start accepts. Automaton has 30143 states and 39077 transitions. Word has length 135 [2021-11-05 16:40:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:40:30,412 INFO L470 AbstractCegarLoop]: Abstraction has 30143 states and 39077 transitions. [2021-11-05 16:40:30,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-05 16:40:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 30143 states and 39077 transitions. [2021-11-05 16:40:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-05 16:40:30,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:40:30,431 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:40:30,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:40:30,431 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:40:30,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:40:30,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1915740303, now seen corresponding path program 1 times [2021-11-05 16:40:30,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:40:30,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532312012] [2021-11-05 16:40:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:40:30,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:40:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:40:30,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:40:30,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532312012] [2021-11-05 16:40:30,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532312012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:40:30,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:40:30,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:40:30,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899454930] [2021-11-05 16:40:30,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:40:30,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:40:30,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:40:30,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:40:30,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:40:30,656 INFO L87 Difference]: Start difference. First operand 30143 states and 39077 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-05 16:40:31,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:40:31,983 INFO L93 Difference]: Finished difference Result 87125 states and 112723 transitions. [2021-11-05 16:40:31,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:40:31,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 118 [2021-11-05 16:40:31,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:40:32,163 INFO L225 Difference]: With dead ends: 87125 [2021-11-05 16:40:32,164 INFO L226 Difference]: Without dead ends: 57070 [2021-11-05 16:40:32,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:40:32,247 INFO L933 BasicCegarLoop]: 6201 mSDtfsCounter, 5608 mSDsluCounter, 6047 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5608 SdHoareTripleChecker+Valid, 12248 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.93ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.63ms IncrementalHoareTripleChecker+Time [2021-11-05 16:40:32,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5608 Valid, 12248 Invalid, 38 Unknown, 0 Unchecked, 10.93ms Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 133.63ms Time] [2021-11-05 16:40:32,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57070 states. [2021-11-05 16:40:33,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57070 to 56623. [2021-11-05 16:40:33,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56623 states, 56310 states have (on average 1.289202628307583) internal successors, (72595), 56366 states have internal predecessors, (72595), 224 states have call successors, (224), 64 states have call predecessors, (224), 88 states have return successors, (428), 216 states have call predecessors, (428), 224 states have call successors, (428) [2021-11-05 16:40:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56623 states to 56623 states and 73247 transitions. [2021-11-05 16:40:33,827 INFO L78 Accepts]: Start accepts. Automaton has 56623 states and 73247 transitions. Word has length 118 [2021-11-05 16:40:33,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:40:33,828 INFO L470 AbstractCegarLoop]: Abstraction has 56623 states and 73247 transitions. [2021-11-05 16:40:33,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-05 16:40:33,829 INFO L276 IsEmpty]: Start isEmpty. Operand 56623 states and 73247 transitions. [2021-11-05 16:40:33,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 16:40:33,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:40:33,850 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] [2021-11-05 16:40:33,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:40:33,851 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:40:33,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:40:33,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1475299326, now seen corresponding path program 1 times [2021-11-05 16:40:33,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:40:33,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592918709] [2021-11-05 16:40:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:40:33,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:40:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:34,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-05 16:40:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-05 16:40:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:34,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:40:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:34,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:40:34,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:40:34,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592918709] [2021-11-05 16:40:34,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592918709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:40:34,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:40:34,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:40:34,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248036305] [2021-11-05 16:40:34,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:40:34,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:40:34,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:40:34,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:40:34,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:40:34,242 INFO L87 Difference]: Start difference. First operand 56623 states and 73247 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-05 16:40:36,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:40:44,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:40:44,129 INFO L93 Difference]: Finished difference Result 170293 states and 220885 transitions. [2021-11-05 16:40:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 16:40:44,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 122 [2021-11-05 16:40:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:40:44,517 INFO L225 Difference]: With dead ends: 170293 [2021-11-05 16:40:44,517 INFO L226 Difference]: Without dead ends: 113758 [2021-11-05 16:40:44,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 38.29ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:40:44,828 INFO L933 BasicCegarLoop]: 7637 mSDtfsCounter, 6462 mSDsluCounter, 18849 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6743.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6470 SdHoareTripleChecker+Valid, 26486 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.77ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7585.64ms IncrementalHoareTripleChecker+Time [2021-11-05 16:40:44,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6470 Valid, 26486 Invalid, 2537 Unknown, 0 Unchecked, 41.77ms Time], IncrementalHoareTripleChecker [47 Valid, 2489 Invalid, 1 Unknown, 0 Unchecked, 7585.64ms Time] [2021-11-05 16:40:44,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113758 states. [2021-11-05 16:40:47,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113758 to 111959. [2021-11-05 16:40:47,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111959 states, 111398 states have (on average 1.289457620424065) internal successors, (143643), 111510 states have internal predecessors, (143643), 384 states have call successors, (384), 128 states have call predecessors, (384), 176 states have return successors, (728), 368 states have call predecessors, (728), 384 states have call successors, (728) [2021-11-05 16:40:48,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111959 states to 111959 states and 144755 transitions. [2021-11-05 16:40:48,005 INFO L78 Accepts]: Start accepts. Automaton has 111959 states and 144755 transitions. Word has length 122 [2021-11-05 16:40:48,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:40:48,005 INFO L470 AbstractCegarLoop]: Abstraction has 111959 states and 144755 transitions. [2021-11-05 16:40:48,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-05 16:40:48,006 INFO L276 IsEmpty]: Start isEmpty. Operand 111959 states and 144755 transitions. [2021-11-05 16:40:48,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-05 16:40:48,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:40:48,077 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:40:48,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:40:48,080 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:40:48,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:40:48,081 INFO L85 PathProgramCache]: Analyzing trace with hash -441464138, now seen corresponding path program 1 times [2021-11-05 16:40:48,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:40:48,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623275782] [2021-11-05 16:40:48,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:40:48,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:40:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-05 16:40:48,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:40:48,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623275782] [2021-11-05 16:40:48,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623275782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:40:48,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:40:48,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:40:48,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732555279] [2021-11-05 16:40:48,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:40:48,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:40:48,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:40:48,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:40:48,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:40:48,270 INFO L87 Difference]: Start difference. First operand 111959 states and 144755 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-05 16:40:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:40:50,996 INFO L93 Difference]: Finished difference Result 223846 states and 289443 transitions. [2021-11-05 16:40:51,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:40:51,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 168 [2021-11-05 16:40:51,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:40:51,360 INFO L225 Difference]: With dead ends: 223846 [2021-11-05 16:40:51,361 INFO L226 Difference]: Without dead ends: 111975 [2021-11-05 16:40:51,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:40:51,752 INFO L933 BasicCegarLoop]: 6181 mSDtfsCounter, 0 mSDsluCounter, 6176 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12357 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.50ms IncrementalHoareTripleChecker+Time [2021-11-05 16:40:51,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12357 Invalid, 6 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 10.50ms Time] [2021-11-05 16:40:51,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111975 states. [2021-11-05 16:40:54,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111975 to 111975. [2021-11-05 16:40:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111975 states, 111414 states have (on average 1.289416051842677) internal successors, (143659), 111526 states have internal predecessors, (143659), 384 states have call successors, (384), 128 states have call predecessors, (384), 176 states have return successors, (728), 368 states have call predecessors, (728), 384 states have call successors, (728) [2021-11-05 16:40:54,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111975 states to 111975 states and 144771 transitions. [2021-11-05 16:40:54,546 INFO L78 Accepts]: Start accepts. Automaton has 111975 states and 144771 transitions. Word has length 168 [2021-11-05 16:40:54,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:40:54,547 INFO L470 AbstractCegarLoop]: Abstraction has 111975 states and 144771 transitions. [2021-11-05 16:40:54,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-05 16:40:54,547 INFO L276 IsEmpty]: Start isEmpty. Operand 111975 states and 144771 transitions. [2021-11-05 16:40:54,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-05 16:40:54,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:40:54,586 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:40:54,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:40:54,586 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:40:54,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:40:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash -239640204, now seen corresponding path program 1 times [2021-11-05 16:40:54,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:40:54,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504576886] [2021-11-05 16:40:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:40:54,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:40:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:40:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-05 16:40:54,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:40:54,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504576886] [2021-11-05 16:40:54,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504576886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:40:54,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:40:54,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:40:54,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073320311] [2021-11-05 16:40:54,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:40:54,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:40:54,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:40:54,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:40:54,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:40:54,755 INFO L87 Difference]: Start difference. First operand 111975 states and 144771 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-05 16:40:57,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:40:57,527 INFO L93 Difference]: Finished difference Result 223878 states and 289475 transitions. [2021-11-05 16:40:57,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:40:57,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 168 [2021-11-05 16:40:57,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:40:57,945 INFO L225 Difference]: With dead ends: 223878 [2021-11-05 16:40:57,945 INFO L226 Difference]: Without dead ends: 111991 [2021-11-05 16:40:58,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:40:58,221 INFO L933 BasicCegarLoop]: 6181 mSDtfsCounter, 0 mSDsluCounter, 6176 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12357 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.42ms IncrementalHoareTripleChecker+Time [2021-11-05 16:40:58,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12357 Invalid, 6 Unknown, 0 Unchecked, 6.43ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 11.42ms Time] [2021-11-05 16:40:58,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111991 states. [2021-11-05 16:41:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111991 to 111991. [2021-11-05 16:41:00,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111991 states, 111430 states have (on average 1.2893744951987796) internal successors, (143675), 111542 states have internal predecessors, (143675), 384 states have call successors, (384), 128 states have call predecessors, (384), 176 states have return successors, (728), 368 states have call predecessors, (728), 384 states have call successors, (728) [2021-11-05 16:41:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111991 states to 111991 states and 144787 transitions. [2021-11-05 16:41:01,182 INFO L78 Accepts]: Start accepts. Automaton has 111991 states and 144787 transitions. Word has length 168 [2021-11-05 16:41:01,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:41:01,183 INFO L470 AbstractCegarLoop]: Abstraction has 111991 states and 144787 transitions. [2021-11-05 16:41:01,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-05 16:41:01,183 INFO L276 IsEmpty]: Start isEmpty. Operand 111991 states and 144787 transitions. [2021-11-05 16:41:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-05 16:41:01,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:41:01,225 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:41:01,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 16:41:01,226 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:41:01,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:41:01,226 INFO L85 PathProgramCache]: Analyzing trace with hash 194088882, now seen corresponding path program 1 times [2021-11-05 16:41:01,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:41:01,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249331667] [2021-11-05 16:41:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:41:01,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:41:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:41:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-05 16:41:01,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:41:01,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249331667] [2021-11-05 16:41:01,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249331667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:41:01,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:41:01,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:41:01,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855335410] [2021-11-05 16:41:01,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:41:01,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:41:01,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:41:01,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:41:01,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:41:01,413 INFO L87 Difference]: Start difference. First operand 111991 states and 144787 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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)