./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 fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--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-dev-fcb8e13 [2021-11-22 23:18:20,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 23:18:20,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 23:18:20,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 23:18:20,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 23:18:20,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 23:18:20,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 23:18:20,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 23:18:20,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 23:18:20,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 23:18:20,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 23:18:20,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 23:18:20,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 23:18:20,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 23:18:20,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 23:18:20,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 23:18:20,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 23:18:20,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 23:18:20,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 23:18:20,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 23:18:20,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 23:18:20,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 23:18:20,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 23:18:20,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 23:18:20,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 23:18:20,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 23:18:20,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 23:18:20,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 23:18:20,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 23:18:20,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 23:18:20,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 23:18:20,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 23:18:20,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 23:18:20,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 23:18:20,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 23:18:20,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 23:18:20,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 23:18:20,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 23:18:20,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 23:18:20,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 23:18:20,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 23:18:20,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 23:18:20,664 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 23:18:20,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 23:18:20,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 23:18:20,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 23:18:20,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 23:18:20,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 23:18:20,666 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 23:18:20,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 23:18:20,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 23:18:20,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 23:18:20,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 23:18:20,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 23:18:20,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 23:18:20,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 23:18:20,668 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 23:18:20,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 23:18:20,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 23:18:20,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 23:18:20,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 23:18:20,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:18:20,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 23:18:20,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 23:18:20,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 23:18:20,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 23:18:20,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 23:18:20,670 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 23:18:20,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 23:18:20,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 23:18:20,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 23:18:20,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d [2021-11-22 23:18:20,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 23:18:20,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 23:18:20,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 23:18:20,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 23:18:20,907 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 23:18:20,908 INFO L432 ainManager$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 [2021-11-22 23:18:20,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76fe2e36c/65469e4f79cf4624b359ab95f9f0285a/FLAG20040c03b [2021-11-22 23:18:21,551 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 23:18:21,552 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 [2021-11-22 23:18:21,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76fe2e36c/65469e4f79cf4624b359ab95f9f0285a/FLAG20040c03b [2021-11-22 23:18:21,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76fe2e36c/65469e4f79cf4624b359ab95f9f0285a [2021-11-22 23:18:21,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 23:18:21,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 23:18:21,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 23:18:21,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 23:18:21,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 23:18:21,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:21" (1/1) ... [2021-11-22 23:18:21,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f72a302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:21, skipping insertion in model container [2021-11-22 23:18:21,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:21" (1/1) ... [2021-11-22 23:18:21,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 23:18:21,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 23:18:22,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-22 23:18:23,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:18:23,408 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 23:18:23,499 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-22 23:18:23,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:18:23,818 INFO L208 MainTranslator]: Completed translation [2021-11-22 23:18:23,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:23 WrapperNode [2021-11-22 23:18:23,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 23:18:23,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 23:18:23,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 23:18:23,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 23:18:23,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:23" (1/1) ... [2021-11-22 23:18:23,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:23" (1/1) ... [2021-11-22 23:18:24,543 INFO L137 Inliner]: procedures = 347, calls = 3093, calls flagged for inlining = 811, calls inlined = 3417, statements flattened = 38525 [2021-11-22 23:18:24,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 23:18:24,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 23:18:24,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 23:18:24,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 23:18:24,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:23" (1/1) ... [2021-11-22 23:18:24,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:23" (1/1) ... [2021-11-22 23:18:24,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:23" (1/1) ... [2021-11-22 23:18:24,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:23" (1/1) ... [2021-11-22 23:18:25,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:23" (1/1) ... [2021-11-22 23:18:25,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:23" (1/1) ... [2021-11-22 23:18:25,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:23" (1/1) ... [2021-11-22 23:18:25,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 23:18:25,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 23:18:25,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 23:18:25,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 23:18:25,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:23" (1/1) ... [2021-11-22 23:18:25,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:18:25,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 23:18:25,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 23:18:25,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 23:18:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 23:18:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 23:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-22 23:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 23:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 23:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-22 23:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tx_timeout [2021-11-22 23:18:25,973 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tx_timeout [2021-11-22 23:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 23:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 23:18:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 23:18:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 23:18:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 23:18:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_dev_init [2021-11-22 23:18:25,974 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_dev_init [2021-11-22 23:18:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 23:18:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_adjust_link [2021-11-22 23:18:25,974 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_adjust_link [2021-11-22 23:18:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-22 23:18:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 23:18:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 23:18:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 23:18:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-22 23:18:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 23:18:25,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 23:18:25,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 23:18:25,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 23:18:25,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 23:18:26,693 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 23:18:26,694 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 23:19:20,482 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 23:19:20,503 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 23:19:20,504 INFO L301 CfgBuilder]: Removed 40 assume(true) statements. [2021-11-22 23:19:20,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:19:20 BoogieIcfgContainer [2021-11-22 23:19:20,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 23:19:20,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 23:19:20,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 23:19:20,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 23:19:20,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:18:21" (1/3) ... [2021-11-22 23:19:20,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c8ce77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:19:20, skipping insertion in model container [2021-11-22 23:19:20,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:23" (2/3) ... [2021-11-22 23:19:20,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c8ce77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:19:20, skipping insertion in model container [2021-11-22 23:19:20,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:19:20" (3/3) ... [2021-11-22 23:19:20,515 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 [2021-11-22 23:19:20,518 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 23:19:20,518 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 23:19:20,561 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 23:19:20,565 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 23:19:20,566 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 23:19:20,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 5858 states, 5831 states have (on average 1.299434059338021) internal successors, (7577), 5834 states have internal predecessors, (7577), 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) [2021-11-22 23:19:20,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 23:19:20,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:19:20,634 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] [2021-11-22 23:19:20,635 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:19:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:19:20,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1260514407, now seen corresponding path program 1 times [2021-11-22 23:19:20,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:19:20,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257169187] [2021-11-22 23:19:20,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:19:20,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:21,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:19:21,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:19:21,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257169187] [2021-11-22 23:19:21,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257169187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:19:21,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:19:21,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:19:21,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412259839] [2021-11-22 23:19:21,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:19:21,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:19:21,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:19:21,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:19:21,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:19:21,202 INFO L87 Difference]: Start difference. First operand has 5858 states, 5831 states have (on average 1.299434059338021) internal successors, (7577), 5834 states have internal predecessors, (7577), 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 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:19:23,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 23:19:23,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:19:23,663 INFO L93 Difference]: Finished difference Result 17226 states and 22452 transitions. [2021-11-22 23:19:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:19:23,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-22 23:19:23,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:19:23,722 INFO L225 Difference]: With dead ends: 17226 [2021-11-22 23:19:23,722 INFO L226 Difference]: Without dead ends: 11277 [2021-11-22 23:19:23,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:19:23,757 INFO L933 BasicCegarLoop]: 7427 mSDtfsCounter, 7133 mSDsluCounter, 7383 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7133 SdHoareTripleChecker+Valid, 14810 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:19:23,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7133 Valid, 14810 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-22 23:19:23,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11277 states. [2021-11-22 23:19:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11277 to 11277. [2021-11-22 23:19:23,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11277 states, 11226 states have (on average 1.2706217708890077) internal successors, (14264), 11230 states have internal predecessors, (14264), 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) [2021-11-22 23:19:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11277 states to 11277 states and 14348 transitions. [2021-11-22 23:19:24,038 INFO L78 Accepts]: Start accepts. Automaton has 11277 states and 14348 transitions. Word has length 42 [2021-11-22 23:19:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:19:24,038 INFO L470 AbstractCegarLoop]: Abstraction has 11277 states and 14348 transitions. [2021-11-22 23:19:24,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:19:24,039 INFO L276 IsEmpty]: Start isEmpty. Operand 11277 states and 14348 transitions. [2021-11-22 23:19:24,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-22 23:19:24,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:19:24,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:19:24,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 23:19:24,044 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:19:24,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:19:24,045 INFO L85 PathProgramCache]: Analyzing trace with hash 732312126, now seen corresponding path program 1 times [2021-11-22 23:19:24,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:19:24,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608788896] [2021-11-22 23:19:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:19:24,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:19:24,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:19:24,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608788896] [2021-11-22 23:19:24,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608788896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:19:24,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:19:24,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 23:19:24,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358651310] [2021-11-22 23:19:24,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:19:24,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 23:19:24,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:19:24,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 23:19:24,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 23:19:24,334 INFO L87 Difference]: Start difference. First operand 11277 states and 14348 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:19:25,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:19:25,070 INFO L93 Difference]: Finished difference Result 33651 states and 42927 transitions. [2021-11-22 23:19:25,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 23:19:25,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 48 [2021-11-22 23:19:25,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:19:25,179 INFO L225 Difference]: With dead ends: 33651 [2021-11-22 23:19:25,180 INFO L226 Difference]: Without dead ends: 22457 [2021-11-22 23:19:25,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 23:19:25,228 INFO L933 BasicCegarLoop]: 7260 mSDtfsCounter, 7270 mSDsluCounter, 21678 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7270 SdHoareTripleChecker+Valid, 28938 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 23:19:25,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7270 Valid, 28938 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 23:19:25,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22457 states. [2021-11-22 23:19:25,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22457 to 22345. [2021-11-22 23:19:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22345 states, 22244 states have (on average 1.271174249235749) internal successors, (28276), 22252 states have internal predecessors, (28276), 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) [2021-11-22 23:19:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22345 states to 22345 states and 28486 transitions. [2021-11-22 23:19:25,737 INFO L78 Accepts]: Start accepts. Automaton has 22345 states and 28486 transitions. Word has length 48 [2021-11-22 23:19:25,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:19:25,738 INFO L470 AbstractCegarLoop]: Abstraction has 22345 states and 28486 transitions. [2021-11-22 23:19:25,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:19:25,738 INFO L276 IsEmpty]: Start isEmpty. Operand 22345 states and 28486 transitions. [2021-11-22 23:19:25,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-22 23:19:25,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:19:25,770 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, 1, 1, 1] [2021-11-22 23:19:25,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 23:19:25,771 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:19:25,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:19:25,771 INFO L85 PathProgramCache]: Analyzing trace with hash -845272367, now seen corresponding path program 1 times [2021-11-22 23:19:25,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:19:25,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057918325] [2021-11-22 23:19:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:19:25,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-22 23:19:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:26,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-22 23:19:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 23:19:26,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:19:26,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057918325] [2021-11-22 23:19:26,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057918325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:19:26,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:19:26,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 23:19:26,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719193742] [2021-11-22 23:19:26,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:19:26,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 23:19:26,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:19:26,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 23:19:26,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 23:19:26,137 INFO L87 Difference]: Start difference. First operand 22345 states and 28486 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-22 23:19:28,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 23:19:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:19:32,694 INFO L93 Difference]: Finished difference Result 59989 states and 76662 transitions. [2021-11-22 23:19:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 23:19:32,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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 139 [2021-11-22 23:19:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:19:32,805 INFO L225 Difference]: With dead ends: 59989 [2021-11-22 23:19:32,805 INFO L226 Difference]: Without dead ends: 37733 [2021-11-22 23:19:32,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 23:19:32,886 INFO L933 BasicCegarLoop]: 7250 mSDtfsCounter, 5770 mSDsluCounter, 12214 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5775 SdHoareTripleChecker+Valid, 19464 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-22 23:19:32,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5775 Valid, 19464 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2105 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-22 23:19:32,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37733 states. [2021-11-22 23:19:33,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37733 to 37433. [2021-11-22 23:19:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37433 states, 37236 states have (on average 1.2738478891395424) internal successors, (47433), 37264 states have internal predecessors, (47433), 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) [2021-11-22 23:19:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37433 states to 37433 states and 47867 transitions. [2021-11-22 23:19:33,670 INFO L78 Accepts]: Start accepts. Automaton has 37433 states and 47867 transitions. Word has length 139 [2021-11-22 23:19:33,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:19:33,671 INFO L470 AbstractCegarLoop]: Abstraction has 37433 states and 47867 transitions. [2021-11-22 23:19:33,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-22 23:19:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand 37433 states and 47867 transitions. [2021-11-22 23:19:33,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-22 23:19:33,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:19:33,695 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, 1, 1] [2021-11-22 23:19:33,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 23:19:33,696 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:19:33,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:19:33,698 INFO L85 PathProgramCache]: Analyzing trace with hash -187002136, now seen corresponding path program 1 times [2021-11-22 23:19:33,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:19:33,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422184583] [2021-11-22 23:19:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:19:33,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:33,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-22 23:19:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:33,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-22 23:19:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 23:19:33,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:19:33,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422184583] [2021-11-22 23:19:33,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422184583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:19:33,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:19:33,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 23:19:33,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14699690] [2021-11-22 23:19:33,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:19:33,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 23:19:33,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:19:33,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 23:19:33,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 23:19:33,964 INFO L87 Difference]: Start difference. First operand 37433 states and 47867 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-22 23:19:36,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 23:19:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:19:39,671 INFO L93 Difference]: Finished difference Result 69769 states and 89236 transitions. [2021-11-22 23:19:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 23:19:39,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 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 138 [2021-11-22 23:19:39,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:19:39,788 INFO L225 Difference]: With dead ends: 69769 [2021-11-22 23:19:39,789 INFO L226 Difference]: Without dead ends: 32425 [2021-11-22 23:19:39,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 23:19:39,878 INFO L933 BasicCegarLoop]: 6373 mSDtfsCounter, 6868 mSDsluCounter, 4569 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6873 SdHoareTripleChecker+Valid, 10942 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-22 23:19:39,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6873 Valid, 10942 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1669 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-22 23:19:39,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32425 states. [2021-11-22 23:19:40,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32425 to 32161. [2021-11-22 23:19:40,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32161 states, 31996 states have (on average 1.2734404300537567) internal successors, (40745), 32024 states have internal predecessors, (40745), 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) [2021-11-22 23:19:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32161 states to 32161 states and 41095 transitions. [2021-11-22 23:19:40,857 INFO L78 Accepts]: Start accepts. Automaton has 32161 states and 41095 transitions. Word has length 138 [2021-11-22 23:19:40,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:19:40,858 INFO L470 AbstractCegarLoop]: Abstraction has 32161 states and 41095 transitions. [2021-11-22 23:19:40,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-22 23:19:40,858 INFO L276 IsEmpty]: Start isEmpty. Operand 32161 states and 41095 transitions. [2021-11-22 23:19:40,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-22 23:19:40,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:19:40,878 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] [2021-11-22 23:19:40,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 23:19:40,879 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:19:40,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:19:40,879 INFO L85 PathProgramCache]: Analyzing trace with hash -219804576, now seen corresponding path program 1 times [2021-11-22 23:19:40,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:19:40,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085466056] [2021-11-22 23:19:40,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:19:40,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 23:19:41,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:19:41,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085466056] [2021-11-22 23:19:41,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085466056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:19:41,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:19:41,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:19:41,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837990356] [2021-11-22 23:19:41,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:19:41,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:19:41,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:19:41,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:19:41,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:19:41,127 INFO L87 Difference]: Start difference. First operand 32161 states and 41095 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:19:42,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:19:42,282 INFO L93 Difference]: Finished difference Result 92989 states and 118587 transitions. [2021-11-22 23:19:42,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:19:42,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 120 [2021-11-22 23:19:42,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:19:42,486 INFO L225 Difference]: With dead ends: 92989 [2021-11-22 23:19:42,486 INFO L226 Difference]: Without dead ends: 60917 [2021-11-22 23:19:42,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:19:42,583 INFO L933 BasicCegarLoop]: 6479 mSDtfsCounter, 5861 mSDsluCounter, 6323 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5861 SdHoareTripleChecker+Valid, 12802 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:19:42,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5861 Valid, 12802 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 23:19:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60917 states. [2021-11-22 23:19:44,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60917 to 60469. [2021-11-22 23:19:44,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60469 states, 60156 states have (on average 1.2707128133519516) internal successors, (76441), 60212 states have internal predecessors, (76441), 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) [2021-11-22 23:19:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60469 states to 60469 states and 77093 transitions. [2021-11-22 23:19:44,547 INFO L78 Accepts]: Start accepts. Automaton has 60469 states and 77093 transitions. Word has length 120 [2021-11-22 23:19:44,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:19:44,548 INFO L470 AbstractCegarLoop]: Abstraction has 60469 states and 77093 transitions. [2021-11-22 23:19:44,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:19:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 60469 states and 77093 transitions. [2021-11-22 23:19:44,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-22 23:19:44,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:19:44,570 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:19:44,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 23:19:44,571 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:19:44,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:19:44,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1983592271, now seen corresponding path program 1 times [2021-11-22 23:19:44,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:19:44,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303261217] [2021-11-22 23:19:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:19:44,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:44,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-22 23:19:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:44,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-22 23:19:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-22 23:19:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:19:44,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:19:44,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303261217] [2021-11-22 23:19:44,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303261217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:19:44,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:19:44,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 23:19:44,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342795159] [2021-11-22 23:19:44,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:19:44,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 23:19:44,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:19:44,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 23:19:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 23:19:44,839 INFO L87 Difference]: Start difference. First operand 60469 states and 77093 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-11-22 23:19:46,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 23:19:53,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:19:53,706 INFO L93 Difference]: Finished difference Result 181825 states and 232417 transitions. [2021-11-22 23:19:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 23:19:53,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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 126 [2021-11-22 23:19:53,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:19:54,394 INFO L225 Difference]: With dead ends: 181825 [2021-11-22 23:19:54,395 INFO L226 Difference]: Without dead ends: 121445 [2021-11-22 23:19:54,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 23:19:54,540 INFO L933 BasicCegarLoop]: 8003 mSDtfsCounter, 6783 mSDsluCounter, 19778 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6791 SdHoareTripleChecker+Valid, 27781 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-22 23:19:54,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6791 Valid, 27781 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2489 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-11-22 23:19:54,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121445 states. [2021-11-22 23:19:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121445 to 119549. [2021-11-22 23:19:57,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119549 states, 118988 states have (on average 1.2709937136517968) internal successors, (151233), 119100 states have internal predecessors, (151233), 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) [2021-11-22 23:19:57,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119549 states to 119549 states and 152345 transitions. [2021-11-22 23:19:57,832 INFO L78 Accepts]: Start accepts. Automaton has 119549 states and 152345 transitions. Word has length 126 [2021-11-22 23:19:57,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:19:57,833 INFO L470 AbstractCegarLoop]: Abstraction has 119549 states and 152345 transitions. [2021-11-22 23:19:57,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-11-22 23:19:57,833 INFO L276 IsEmpty]: Start isEmpty. Operand 119549 states and 152345 transitions. [2021-11-22 23:19:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-22 23:19:57,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:19:57,939 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, 1, 1, 1, 1] [2021-11-22 23:19:57,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 23:19:57,939 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:19:57,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:19:57,940 INFO L85 PathProgramCache]: Analyzing trace with hash -266513372, now seen corresponding path program 1 times [2021-11-22 23:19:57,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:19:57,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520496914] [2021-11-22 23:19:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:19:57,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 23:19:58,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:19:58,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520496914] [2021-11-22 23:19:58,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520496914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:19:58,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:19:58,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:19:58,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203067168] [2021-11-22 23:19:58,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:19:58,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:19:58,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:19:58,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:19:58,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:19:58,156 INFO L87 Difference]: Start difference. First operand 119549 states and 152345 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:20:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:20:01,036 INFO L93 Difference]: Finished difference Result 239025 states and 304622 transitions. [2021-11-22 23:20:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:20:01,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-11-22 23:20:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:20:01,622 INFO L225 Difference]: With dead ends: 239025 [2021-11-22 23:20:01,622 INFO L226 Difference]: Without dead ends: 119565 [2021-11-22 23:20:01,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:20:01,832 INFO L933 BasicCegarLoop]: 6458 mSDtfsCounter, 0 mSDsluCounter, 6453 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12911 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 23:20:01,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12911 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 23:20:01,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119565 states. [2021-11-22 23:20:04,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119565 to 119565. [2021-11-22 23:20:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119565 states, 119004 states have (on average 1.270957278746933) internal successors, (151249), 119116 states have internal predecessors, (151249), 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) [2021-11-22 23:20:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119565 states to 119565 states and 152361 transitions. [2021-11-22 23:20:04,975 INFO L78 Accepts]: Start accepts. Automaton has 119565 states and 152361 transitions. Word has length 172 [2021-11-22 23:20:04,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:20:04,977 INFO L470 AbstractCegarLoop]: Abstraction has 119565 states and 152361 transitions. [2021-11-22 23:20:04,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:20:04,977 INFO L276 IsEmpty]: Start isEmpty. Operand 119565 states and 152361 transitions. [2021-11-22 23:20:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-22 23:20:05,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:20:05,054 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, 1, 1, 1, 1] [2021-11-22 23:20:05,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 23:20:05,055 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:20:05,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:20:05,055 INFO L85 PathProgramCache]: Analyzing trace with hash 412758882, now seen corresponding path program 1 times [2021-11-22 23:20:05,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:20:05,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213240700] [2021-11-22 23:20:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:20:05,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:20:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:20:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 23:20:05,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:20:05,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213240700] [2021-11-22 23:20:05,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213240700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:20:05,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:20:05,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:20:05,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017831455] [2021-11-22 23:20:05,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:20:05,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:20:05,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:20:05,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:20:05,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:20:05,252 INFO L87 Difference]: Start difference. First operand 119565 states and 152361 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:20:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:20:08,024 INFO L93 Difference]: Finished difference Result 239057 states and 304654 transitions. [2021-11-22 23:20:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:20:08,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-11-22 23:20:08,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:20:08,463 INFO L225 Difference]: With dead ends: 239057 [2021-11-22 23:20:08,463 INFO L226 Difference]: Without dead ends: 119581 [2021-11-22 23:20:08,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:20:08,754 INFO L933 BasicCegarLoop]: 6458 mSDtfsCounter, 0 mSDsluCounter, 6453 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12911 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 23:20:08,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12911 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 23:20:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119581 states.