./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--team--team.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--team--team.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 fd0809ab472c07ecac4481f79234cefe77a263df35fd70312ac385669cfbdfaf --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 16:41:03,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:41:03,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:41:03,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:41:03,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:41:03,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:41:03,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:41:03,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:41:03,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:41:03,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:41:03,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:41:03,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:41:03,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:41:03,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:41:03,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:41:03,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:41:03,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:41:03,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:41:03,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:41:03,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:41:03,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:41:03,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:41:03,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:41:03,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:41:03,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:41:03,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:41:03,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:41:03,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:41:03,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:41:03,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:41:03,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:41:03,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:41:03,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:41:03,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:41:03,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:41:03,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:41:03,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:41:03,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:41:03,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:41:03,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:41:03,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:41:03,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:41:03,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:41:03,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:41:03,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:41:03,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:41:03,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:41:03,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:41:03,881 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:41:03,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:41:03,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:41:03,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:41:03,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:41:03,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:41:03,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:41:03,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:41:03,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:41:03,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:41:03,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:41:03,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:41:03,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:41:03,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:41:03,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:41:03,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:41:03,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:41:03,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:41:03,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:41:03,885 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:41:03,885 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:41:03,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:41:03,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:41:03,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd0809ab472c07ecac4481f79234cefe77a263df35fd70312ac385669cfbdfaf [2021-11-05 16:41:04,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:41:04,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:41:04,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:41:04,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:41:04,174 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:41:04,175 INFO L432 ainManager$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--team--team.ko-entry_point.cil.out.i [2021-11-05 16:41:04,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c421121/b8905546569a4ef6bc71dba45af003ac/FLAGace113c42 [2021-11-05 16:41:04,844 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:41:04,844 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--team--team.ko-entry_point.cil.out.i [2021-11-05 16:41:04,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c421121/b8905546569a4ef6bc71dba45af003ac/FLAGace113c42 [2021-11-05 16:41:05,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c421121/b8905546569a4ef6bc71dba45af003ac [2021-11-05 16:41:05,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:41:05,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:41:05,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:41:05,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:41:05,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:41:05,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:41:05" (1/1) ... [2021-11-05 16:41:05,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c13f649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:05, skipping insertion in model container [2021-11-05 16:41:05,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:41:05" (1/1) ... [2021-11-05 16:41:05,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:41:05,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:41:06,121 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--team--team.ko-entry_point.cil.out.i[177976,177989] [2021-11-05 16:41:07,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:41:07,377 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:41:07,473 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--team--team.ko-entry_point.cil.out.i[177976,177989] [2021-11-05 16:41:07,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:41:07,892 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:41:07,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:07 WrapperNode [2021-11-05 16:41:07,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:41:07,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:41:07,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:41:07,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:41:07,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:07" (1/1) ... [2021-11-05 16:41:07,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:07" (1/1) ... [2021-11-05 16:41:08,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:41:08,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:41:08,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:41:08,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:41:08,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:07" (1/1) ... [2021-11-05 16:41:08,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:07" (1/1) ... [2021-11-05 16:41:08,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:07" (1/1) ... [2021-11-05 16:41:08,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:07" (1/1) ... [2021-11-05 16:41:09,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:07" (1/1) ... [2021-11-05 16:41:09,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:07" (1/1) ... [2021-11-05 16:41:09,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:07" (1/1) ... [2021-11-05 16:41:09,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:41:09,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:41:09,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:41:09,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:41:09,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:07" (1/1) ... [2021-11-05 16:41:09,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:41:09,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:41:09,640 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 16:41:09,674 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 16:41:09,694 INFO L130 BoogieDeclarations]: Found specification of procedure __team_change_mode [2021-11-05 16:41:09,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_change_mode [2021-11-05 16:41:09,695 INFO L130 BoogieDeclarations]: Found specification of procedure team_init [2021-11-05 16:41:09,695 INFO L138 BoogieDeclarations]: Found implementation of procedure team_init [2021-11-05 16:41:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure team_del_slave [2021-11-05 16:41:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure team_del_slave [2021-11-05 16:41:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_set [2021-11-05 16:41:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_set [2021-11-05 16:41:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_add [2021-11-05 16:41:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_add [2021-11-05 16:41:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:41:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure team_add_slave [2021-11-05 16:41:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure team_add_slave [2021-11-05 16:41:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:41:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:41:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:41:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure team_mode_option_set [2021-11-05 16:41:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure team_mode_option_set [2021-11-05 16:41:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure team_change_mode [2021-11-05 16:41:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure team_change_mode [2021-11-05 16:41:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-05 16:41:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:41:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:41:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 16:41:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:41:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:41:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-05 16:41:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-05 16:41:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_set [2021-11-05 16:41:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_set [2021-11-05 16:41:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_del [2021-11-05 16:41:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_del [2021-11-05 16:41:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:41:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:41:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_register [2021-11-05 16:41:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_register [2021-11-05 16:41:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_change_check [2021-11-05 16:41:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_change_check [2021-11-05 16:41:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:41:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:41:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_register [2021-11-05 16:41:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_register [2021-11-05 16:41:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_option [2021-11-05 16:41:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_option [2021-11-05 16:41:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-05 16:41:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:41:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:41:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_get [2021-11-05 16:41:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_get [2021-11-05 16:41:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:41:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_fill_one_option_get [2021-11-05 16:41:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_fill_one_option_get [2021-11-05 16:41:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:41:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_get [2021-11-05 16:41:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_get [2021-11-05 16:41:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_options_get [2021-11-05 16:41:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_options_get [2021-11-05 16:41:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_port [2021-11-05 16:41:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_port [2021-11-05 16:41:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_change_check [2021-11-05 16:41:09,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_change_check [2021-11-05 16:41:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 16:41:09,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 16:41:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_enter [2021-11-05 16:41:09,704 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_enter [2021-11-05 16:41:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:41:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_event_options_get [2021-11-05 16:41:09,705 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_event_options_get [2021-11-05 16:41:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure team_uninit [2021-11-05 16:41:09,705 INFO L138 BoogieDeclarations]: Found implementation of procedure team_uninit [2021-11-05 16:41:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add [2021-11-05 16:41:09,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add [2021-11-05 16:41:23,206 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:41:23,207 INFO L299 CfgBuilder]: Removed 5565 assume(true) statements. [2021-11-05 16:41:23,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:41:23 BoogieIcfgContainer [2021-11-05 16:41:23,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:41:23,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:41:23,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:41:23,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:41:23,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:41:05" (1/3) ... [2021-11-05 16:41:23,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e3de28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:41:23, skipping insertion in model container [2021-11-05 16:41:23,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:07" (2/3) ... [2021-11-05 16:41:23,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e3de28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:41:23, skipping insertion in model container [2021-11-05 16:41:23,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:41:23" (3/3) ... [2021-11-05 16:41:23,221 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i [2021-11-05 16:41:23,225 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:41:23,225 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-05 16:41:23,279 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:41:23,283 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 16:41:23,283 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-05 16:41:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 6373 states, 6296 states have (on average 1.4866581956797966) internal successors, (9360), 6300 states have internal predecessors, (9360), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-05 16:41:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-05 16:41:23,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:41:23,352 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 16:41:23,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:41:23,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:41:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1443674913, now seen corresponding path program 1 times [2021-11-05 16:41:23,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:41:23,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589857900] [2021-11-05 16:41:23,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:41:23,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:41:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:41:23,874 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 16:41:23,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:41:23,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589857900] [2021-11-05 16:41:23,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589857900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:41:23,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:41:23,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:41:23,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185497631] [2021-11-05 16:41:23,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:41:23,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:41:23,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:41:23,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:41:23,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:41:23,914 INFO L87 Difference]: Start difference. First operand has 6373 states, 6296 states have (on average 1.4866581956797966) internal successors, (9360), 6300 states have internal predecessors, (9360), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 16:41:25,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:41:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:41:26,494 INFO L93 Difference]: Finished difference Result 18999 states and 28304 transitions. [2021-11-05 16:41:26,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:41:26,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 16:41:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:41:26,580 INFO L225 Difference]: With dead ends: 18999 [2021-11-05 16:41:26,583 INFO L226 Difference]: Without dead ends: 12601 [2021-11-05 16:41:26,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:41:26,623 INFO L933 BasicCegarLoop]: 9363 mSDtfsCounter, 9187 mSDsluCounter, 9292 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2064.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9187 SdHoareTripleChecker+Valid, 18655 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.61ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2170.65ms IncrementalHoareTripleChecker+Time [2021-11-05 16:41:26,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9187 Valid, 18655 Invalid, 15 Unknown, 0 Unchecked, 46.61ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2170.65ms Time] [2021-11-05 16:41:26,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-11-05 16:41:26,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 12601. [2021-11-05 16:41:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12601 states, 12450 states have (on average 1.46570281124498) internal successors, (18248), 12456 states have internal predecessors, (18248), 96 states have call successors, (96), 54 states have call predecessors, (96), 54 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-05 16:41:26,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12601 states to 12601 states and 18440 transitions. [2021-11-05 16:41:26,984 INFO L78 Accepts]: Start accepts. Automaton has 12601 states and 18440 transitions. Word has length 47 [2021-11-05 16:41:26,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:41:26,989 INFO L470 AbstractCegarLoop]: Abstraction has 12601 states and 18440 transitions. [2021-11-05 16:41:26,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 16:41:26,990 INFO L276 IsEmpty]: Start isEmpty. Operand 12601 states and 18440 transitions. [2021-11-05 16:41:26,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 16:41:26,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:41:26,996 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, 1, 1] [2021-11-05 16:41:26,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:41:26,997 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:41:26,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:41:26,999 INFO L85 PathProgramCache]: Analyzing trace with hash 457393101, now seen corresponding path program 1 times [2021-11-05 16:41:26,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:41:26,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351618626] [2021-11-05 16:41:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:41:27,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:41:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:41:27,235 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 16:41:27,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:41:27,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351618626] [2021-11-05 16:41:27,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351618626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:41:27,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:41:27,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:41:27,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306706947] [2021-11-05 16:41:27,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:41:27,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:41:27,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:41:27,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:41:27,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:41:27,242 INFO L87 Difference]: Start difference. First operand 12601 states and 18440 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 16:41:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:41:28,202 INFO L93 Difference]: Finished difference Result 37679 states and 55361 transitions. [2021-11-05 16:41:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:41:28,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 50 [2021-11-05 16:41:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:41:28,319 INFO L225 Difference]: With dead ends: 37679 [2021-11-05 16:41:28,319 INFO L226 Difference]: Without dead ends: 25131 [2021-11-05 16:41:28,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.95ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:41:28,364 INFO L933 BasicCegarLoop]: 9300 mSDtfsCounter, 9223 mSDsluCounter, 27759 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 242.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9223 SdHoareTripleChecker+Valid, 37059 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.81ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 293.43ms IncrementalHoareTripleChecker+Time [2021-11-05 16:41:28,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9223 Valid, 37059 Invalid, 379 Unknown, 0 Unchecked, 49.81ms Time], IncrementalHoareTripleChecker [16 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 293.43ms Time] [2021-11-05 16:41:28,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25131 states. [2021-11-05 16:41:28,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25131 to 25067. [2021-11-05 16:41:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25067 states, 24766 states have (on average 1.4657191310667852) internal successors, (36300), 24778 states have internal predecessors, (36300), 192 states have call successors, (192), 108 states have call predecessors, (192), 108 states have return successors, (288), 188 states have call predecessors, (288), 192 states have call successors, (288) [2021-11-05 16:41:28,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25067 states to 25067 states and 36780 transitions. [2021-11-05 16:41:28,963 INFO L78 Accepts]: Start accepts. Automaton has 25067 states and 36780 transitions. Word has length 50 [2021-11-05 16:41:28,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:41:28,963 INFO L470 AbstractCegarLoop]: Abstraction has 25067 states and 36780 transitions. [2021-11-05 16:41:28,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 16:41:28,964 INFO L276 IsEmpty]: Start isEmpty. Operand 25067 states and 36780 transitions. [2021-11-05 16:41:28,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-05 16:41:28,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:41:28,984 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:41:28,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:41:28,984 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:41:28,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:41:28,985 INFO L85 PathProgramCache]: Analyzing trace with hash 509003370, now seen corresponding path program 1 times [2021-11-05 16:41:28,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:41:28,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141661278] [2021-11-05 16:41:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:41:28,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:41:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:41:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:41:29,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:41:29,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141661278] [2021-11-05 16:41:29,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141661278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:41:29,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:41:29,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:41:29,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099295050] [2021-11-05 16:41:29,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:41:29,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:41:29,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:41:29,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:41:29,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:41:29,159 INFO L87 Difference]: Start difference. First operand 25067 states and 36780 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 16:41:30,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:41:30,037 INFO L93 Difference]: Finished difference Result 71177 states and 105022 transitions. [2021-11-05 16:41:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:41:30,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-11-05 16:41:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:41:30,217 INFO L225 Difference]: With dead ends: 71177 [2021-11-05 16:41:30,217 INFO L226 Difference]: Without dead ends: 46171 [2021-11-05 16:41:30,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:41:30,496 INFO L933 BasicCegarLoop]: 9346 mSDtfsCounter, 7976 mSDsluCounter, 9207 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7976 SdHoareTripleChecker+Valid, 18553 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.65ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.00ms IncrementalHoareTripleChecker+Time [2021-11-05 16:41:30,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7976 Valid, 18553 Invalid, 8 Unknown, 0 Unchecked, 23.65ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 55.00ms Time] [2021-11-05 16:41:30,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46171 states. [2021-11-05 16:41:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46171 to 46117. [2021-11-05 16:41:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46117 states, 45520 states have (on average 1.4785149384885765) internal successors, (67302), 45544 states have internal predecessors, (67302), 380 states have call successors, (380), 216 states have call predecessors, (380), 216 states have return successors, (570), 372 states have call predecessors, (570), 380 states have call successors, (570) [2021-11-05 16:41:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46117 states to 46117 states and 68252 transitions. [2021-11-05 16:41:31,653 INFO L78 Accepts]: Start accepts. Automaton has 46117 states and 68252 transitions. Word has length 108 [2021-11-05 16:41:31,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:41:31,653 INFO L470 AbstractCegarLoop]: Abstraction has 46117 states and 68252 transitions. [2021-11-05 16:41:31,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 16:41:31,654 INFO L276 IsEmpty]: Start isEmpty. Operand 46117 states and 68252 transitions. [2021-11-05 16:41:31,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-05 16:41:31,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:41:31,699 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 16:41:31,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:41:31,699 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:41:31,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:41:31,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1771568411, now seen corresponding path program 1 times [2021-11-05 16:41:31,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:41:31,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408475853] [2021-11-05 16:41:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:41:31,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:41:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:41:31,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-05 16:41:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:41:31,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-05 16:41:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:41:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-05 16:41:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:41:31,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-05 16:41:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:41:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:41:31,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:41:31,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408475853] [2021-11-05 16:41:31,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408475853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:41:31,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:41:31,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:41:31,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720063291] [2021-11-05 16:41:31,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:41:31,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:41:31,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:41:31,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:41:31,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:41:31,989 INFO L87 Difference]: Start difference. First operand 46117 states and 68252 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-05 16:41:34,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:41:43,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:41:43,782 INFO L93 Difference]: Finished difference Result 113935 states and 168662 transitions. [2021-11-05 16:41:43,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 16:41:43,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 134 [2021-11-05 16:41:43,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:41:44,168 INFO L225 Difference]: With dead ends: 113935 [2021-11-05 16:41:44,169 INFO L226 Difference]: Without dead ends: 67879 [2021-11-05 16:41:44,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.54ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:41:44,285 INFO L933 BasicCegarLoop]: 14975 mSDtfsCounter, 7526 mSDsluCounter, 35218 mSDsCounter, 0 mSdLazyCounter, 4381 mSolverCounterSat, 213 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9275.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7536 SdHoareTripleChecker+Valid, 50193 SdHoareTripleChecker+Invalid, 4595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.80ms SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 4381 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10266.20ms IncrementalHoareTripleChecker+Time [2021-11-05 16:41:44,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7536 Valid, 50193 Invalid, 4595 Unknown, 0 Unchecked, 68.80ms Time], IncrementalHoareTripleChecker [213 Valid, 4381 Invalid, 1 Unknown, 0 Unchecked, 10266.20ms Time] [2021-11-05 16:41:44,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67879 states. [2021-11-05 16:41:45,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67879 to 65467. [2021-11-05 16:41:45,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65467 states, 64494 states have (on average 1.46317486898006) internal successors, (94366), 64566 states have internal predecessors, (94366), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-05 16:41:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65467 states to 65467 states and 95918 transitions. [2021-11-05 16:41:46,017 INFO L78 Accepts]: Start accepts. Automaton has 65467 states and 95918 transitions. Word has length 134 [2021-11-05 16:41:46,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:41:46,017 INFO L470 AbstractCegarLoop]: Abstraction has 65467 states and 95918 transitions. [2021-11-05 16:41:46,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-05 16:41:46,018 INFO L276 IsEmpty]: Start isEmpty. Operand 65467 states and 95918 transitions. [2021-11-05 16:41:46,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-05 16:41:46,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:41:46,061 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 16:41:46,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:41:46,061 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:41:46,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:41:46,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1472630836, now seen corresponding path program 1 times [2021-11-05 16:41:46,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:41:46,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143689185] [2021-11-05 16:41:46,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:41:46,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:41:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:41:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:41:46,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:41:46,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143689185] [2021-11-05 16:41:46,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143689185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:41:46,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:41:46,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:41:46,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942405985] [2021-11-05 16:41:46,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:41:46,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:41:46,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:41:46,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:41:46,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:41:46,287 INFO L87 Difference]: Start difference. First operand 65467 states and 95918 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 16:41:48,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:41:48,988 INFO L93 Difference]: Finished difference Result 200796 states and 295031 transitions. [2021-11-05 16:41:48,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:41:48,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 133 [2021-11-05 16:41:48,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:41:49,679 INFO L225 Difference]: With dead ends: 200796 [2021-11-05 16:41:49,691 INFO L226 Difference]: Without dead ends: 135390 [2021-11-05 16:41:49,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:41:49,839 INFO L933 BasicCegarLoop]: 13289 mSDtfsCounter, 12379 mSDsluCounter, 22371 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 140.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12397 SdHoareTripleChecker+Valid, 35660 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.03ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180.89ms IncrementalHoareTripleChecker+Time [2021-11-05 16:41:49,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12397 Valid, 35660 Invalid, 204 Unknown, 0 Unchecked, 31.03ms Time], IncrementalHoareTripleChecker [56 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 180.89ms Time] [2021-11-05 16:41:49,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135390 states. [2021-11-05 16:41:52,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135390 to 65563. [2021-11-05 16:41:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65563 states, 64590 states have (on average 1.462486453011302) internal successors, (94462), 64662 states have internal predecessors, (94462), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-05 16:41:52,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65563 states to 65563 states and 96014 transitions. [2021-11-05 16:41:52,369 INFO L78 Accepts]: Start accepts. Automaton has 65563 states and 96014 transitions. Word has length 133 [2021-11-05 16:41:52,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:41:52,370 INFO L470 AbstractCegarLoop]: Abstraction has 65563 states and 96014 transitions. [2021-11-05 16:41:52,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 16:41:52,370 INFO L276 IsEmpty]: Start isEmpty. Operand 65563 states and 96014 transitions. [2021-11-05 16:41:52,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-05 16:41:52,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:41:52,414 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 16:41:52,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:41:52,414 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:41:52,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:41:52,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1926288880, now seen corresponding path program 1 times [2021-11-05 16:41:52,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:41:52,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540802199] [2021-11-05 16:41:52,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:41:52,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:41:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:41:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:41:52,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:41:52,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540802199] [2021-11-05 16:41:52,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540802199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:41:52,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:41:52,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 16:41:52,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918306076] [2021-11-05 16:41:52,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:41:52,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 16:41:52,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:41:52,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 16:41:52,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:41:52,635 INFO L87 Difference]: Start difference. First operand 65563 states and 96014 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 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 16:41:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:41:58,062 INFO L93 Difference]: Finished difference Result 246740 states and 362935 transitions. [2021-11-05 16:41:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 16:41:58,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 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 136 [2021-11-05 16:41:58,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:41:58,674 INFO L225 Difference]: With dead ends: 246740 [2021-11-05 16:41:58,675 INFO L226 Difference]: Without dead ends: 181238 [2021-11-05 16:41:58,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 139.37ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-05 16:41:58,839 INFO L933 BasicCegarLoop]: 25432 mSDtfsCounter, 41480 mSDsluCounter, 116256 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 624.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41489 SdHoareTripleChecker+Valid, 141688 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.91ms SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 760.57ms IncrementalHoareTripleChecker+Time [2021-11-05 16:41:58,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41489 Valid, 141688 Invalid, 1414 Unknown, 0 Unchecked, 101.91ms Time], IncrementalHoareTripleChecker [303 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 760.57ms Time] [2021-11-05 16:41:58,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181238 states. [2021-11-05 16:42:01,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181238 to 65659. [2021-11-05 16:42:01,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65659 states, 64686 states have (on average 1.4618000803883375) internal successors, (94558), 64758 states have internal predecessors, (94558), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-05 16:42:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65659 states to 65659 states and 96110 transitions. [2021-11-05 16:42:02,035 INFO L78 Accepts]: Start accepts. Automaton has 65659 states and 96110 transitions. Word has length 136 [2021-11-05 16:42:02,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:42:02,036 INFO L470 AbstractCegarLoop]: Abstraction has 65659 states and 96110 transitions. [2021-11-05 16:42:02,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 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 16:42:02,036 INFO L276 IsEmpty]: Start isEmpty. Operand 65659 states and 96110 transitions. [2021-11-05 16:42:02,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 16:42:02,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:42:02,071 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 16:42:02,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:42:02,071 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:42:02,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:42:02,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1620447595, now seen corresponding path program 1 times [2021-11-05 16:42:02,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:42:02,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275089794] [2021-11-05 16:42:02,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:42:02,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:42:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:42:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 16:42:02,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:42:02,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275089794] [2021-11-05 16:42:02,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275089794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:42:02,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:42:02,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:42:02,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65194583] [2021-11-05 16:42:02,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:42:02,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:42:02,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:42:02,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:42:02,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:42:02,479 INFO L87 Difference]: Start difference. First operand 65659 states and 96110 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 16:42:04,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:42:04,169 INFO L93 Difference]: Finished difference Result 131266 states and 192159 transitions. [2021-11-05 16:42:04,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:42:04,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 138 [2021-11-05 16:42:04,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:42:04,380 INFO L225 Difference]: With dead ends: 131266 [2021-11-05 16:42:04,381 INFO L226 Difference]: Without dead ends: 65661 [2021-11-05 16:42:04,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:42:04,520 INFO L933 BasicCegarLoop]: 9202 mSDtfsCounter, 0 mSDsluCounter, 9192 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18394 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.15ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.48ms IncrementalHoareTripleChecker+Time [2021-11-05 16:42:04,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18394 Invalid, 14 Unknown, 0 Unchecked, 10.15ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 27.48ms Time] [2021-11-05 16:42:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65661 states. [2021-11-05 16:42:06,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65661 to 65661. [2021-11-05 16:42:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65661 states, 64688 states have (on average 1.4617858026218156) internal successors, (94560), 64760 states have internal predecessors, (94560), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-05 16:42:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65661 states to 65661 states and 96112 transitions. [2021-11-05 16:42:06,429 INFO L78 Accepts]: Start accepts. Automaton has 65661 states and 96112 transitions. Word has length 138 [2021-11-05 16:42:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:42:06,430 INFO L470 AbstractCegarLoop]: Abstraction has 65661 states and 96112 transitions. [2021-11-05 16:42:06,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 16:42:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 65661 states and 96112 transitions. [2021-11-05 16:42:06,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-05 16:42:06,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:42:06,461 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 16:42:06,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:42:06,461 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:42:06,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:42:06,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1871301679, now seen corresponding path program 1 times [2021-11-05 16:42:06,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:42:06,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5667830] [2021-11-05 16:42:06,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:42:06,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:42:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:42:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 16:42:06,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:42:06,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5667830] [2021-11-05 16:42:06,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5667830] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:42:06,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752731249] [2021-11-05 16:42:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:42:06,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:42:06,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:42:06,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:42:06,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 16:42:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:42:08,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 3495 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 16:42:08,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:42:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 16:42:08,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:42:08,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752731249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:42:08,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:42:08,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-05 16:42:08,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249330612] [2021-11-05 16:42:08,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:42:08,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:42:08,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:42:08,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:42:08,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:42:08,685 INFO L87 Difference]: Start difference. First operand 65661 states and 96112 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 16:42:10,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:42:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:42:12,883 INFO L93 Difference]: Finished difference Result 131515 states and 192487 transitions. [2021-11-05 16:42:12,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 16:42:12,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 140 [2021-11-05 16:42:12,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:42:13,091 INFO L225 Difference]: With dead ends: 131515 [2021-11-05 16:42:13,092 INFO L226 Difference]: Without dead ends: 65881 [2021-11-05 16:42:13,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.98ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-05 16:42:13,199 INFO L933 BasicCegarLoop]: 18284 mSDtfsCounter, 9103 mSDsluCounter, 45747 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2083.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9103 SdHoareTripleChecker+Valid, 64031 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.98ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2168.14ms IncrementalHoareTripleChecker+Time [2021-11-05 16:42:13,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9103 Valid, 64031 Invalid, 30 Unknown, 0 Unchecked, 35.98ms Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2168.14ms Time] [2021-11-05 16:42:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65881 states.