./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.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 8bd4d18c7774801c1dd2fcc01cd37afd9da2c99096cf08f4bd160d17156b286b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:33:25,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:33:25,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:33:25,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:33:25,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:33:25,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:33:25,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:33:25,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:33:25,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:33:25,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:33:25,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:33:25,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:33:25,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:33:25,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:33:25,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:33:25,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:33:25,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:33:25,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:33:25,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:33:25,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:33:25,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:33:25,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:33:25,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:33:25,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:33:25,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:33:25,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:33:25,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:33:25,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:33:25,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:33:25,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:33:25,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:33:25,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:33:25,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:33:25,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:33:25,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:33:25,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:33:25,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:33:25,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:33:25,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:33:25,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:33:25,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:33:25,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:33:25,785 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:33:25,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:33:25,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:33:25,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:33:25,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:33:25,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:33:25,788 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:33:25,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:33:25,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:33:25,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:33:25,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:33:25,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:33:25,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:33:25,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:33:25,790 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:33:25,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:33:25,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:33:25,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:33:25,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:33:25,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:33:25,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:33:25,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:33:25,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:33:25,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:33:25,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:33:25,792 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:33:25,792 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:33:25,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:33:25,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:33:25,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bd4d18c7774801c1dd2fcc01cd37afd9da2c99096cf08f4bd160d17156b286b [2021-11-06 15:33:26,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:33:26,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:33:26,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:33:26,043 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:33:26,044 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:33:26,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:33:26,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1408d29ce/d75ad0ca8c034981a29a58e47798e8f1/FLAGc70533cde [2021-11-06 15:33:26,589 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:33:26,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:33:26,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1408d29ce/d75ad0ca8c034981a29a58e47798e8f1/FLAGc70533cde [2021-11-06 15:33:27,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1408d29ce/d75ad0ca8c034981a29a58e47798e8f1 [2021-11-06 15:33:27,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:33:27,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:33:27,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:33:27,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:33:27,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:33:27,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:33:27" (1/1) ... [2021-11-06 15:33:27,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e17927c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:33:27, skipping insertion in model container [2021-11-06 15:33:27,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:33:27" (1/1) ... [2021-11-06 15:33:27,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:33:27,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:33:27,676 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-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113815,113828] [2021-11-06 15:33:27,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:33:27,741 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:33:27,876 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-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113815,113828] [2021-11-06 15:33:27,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:33:27,918 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:33:27,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:33:27 WrapperNode [2021-11-06 15:33:27,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:33:27,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:33:27,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:33:27,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:33:27,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:33:27" (1/1) ... [2021-11-06 15:33:27,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:33:27" (1/1) ... [2021-11-06 15:33:28,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:33:28,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:33:28,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:33:28,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:33:28,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:33:27" (1/1) ... [2021-11-06 15:33:28,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:33:27" (1/1) ... [2021-11-06 15:33:28,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:33:27" (1/1) ... [2021-11-06 15:33:28,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:33:27" (1/1) ... [2021-11-06 15:33:28,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:33:27" (1/1) ... [2021-11-06 15:33:28,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:33:27" (1/1) ... [2021-11-06 15:33:28,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:33:27" (1/1) ... [2021-11-06 15:33:28,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:33:28,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:33:28,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:33:28,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:33:28,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:33:27" (1/1) ... [2021-11-06 15:33:28,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:33:28,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:33:28,119 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) [2021-11-06 15:33:28,158 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 [2021-11-06 15:33:28,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:33:28,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:33:28,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:33:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:33:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:33:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:33:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:33:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:33:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:33:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:33:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:33:29,130 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:33:29,131 INFO L299 CfgBuilder]: Removed 194 assume(true) statements. [2021-11-06 15:33:29,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:33:29 BoogieIcfgContainer [2021-11-06 15:33:29,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:33:29,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:33:29,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:33:29,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:33:29,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:33:27" (1/3) ... [2021-11-06 15:33:29,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b5578e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:33:29, skipping insertion in model container [2021-11-06 15:33:29,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:33:27" (2/3) ... [2021-11-06 15:33:29,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b5578e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:33:29, skipping insertion in model container [2021-11-06 15:33:29,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:33:29" (3/3) ... [2021-11-06 15:33:29,140 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:33:29,144 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:33:29,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-06 15:33:29,188 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:33:29,192 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 [2021-11-06 15:33:29,193 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-06 15:33:29,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 174 states have (on average 1.396551724137931) internal successors, (243), 178 states have internal predecessors, (243), 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) [2021-11-06 15:33:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-06 15:33:29,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:29,221 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:33:29,221 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:29,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash -218290634, now seen corresponding path program 1 times [2021-11-06 15:33:29,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:29,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527961488] [2021-11-06 15:33:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:29,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:29,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:29,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:29,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527961488] [2021-11-06 15:33:29,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527961488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:29,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:29,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:33:29,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071611232] [2021-11-06 15:33:29,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:33:29,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:29,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:33:29,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:33:29,493 INFO L87 Difference]: Start difference. First operand has 179 states, 174 states have (on average 1.396551724137931) internal successors, (243), 178 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2021-11-06 15:33:29,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:29,534 INFO L93 Difference]: Finished difference Result 354 states and 481 transitions. [2021-11-06 15:33:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:33:29,535 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 17 [2021-11-06 15:33:29,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:29,544 INFO L225 Difference]: With dead ends: 354 [2021-11-06 15:33:29,545 INFO L226 Difference]: Without dead ends: 171 [2021-11-06 15:33:29,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:33:29,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-06 15:33:29,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-11-06 15:33:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 167 states have (on average 1.311377245508982) internal successors, (219), 170 states have internal predecessors, (219), 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) [2021-11-06 15:33:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 219 transitions. [2021-11-06 15:33:29,580 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 219 transitions. Word has length 17 [2021-11-06 15:33:29,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:29,580 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 219 transitions. [2021-11-06 15:33:29,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2021-11-06 15:33:29,580 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 219 transitions. [2021-11-06 15:33:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-06 15:33:29,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:29,583 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:33:29,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:33:29,584 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:29,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:29,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1229407884, now seen corresponding path program 1 times [2021-11-06 15:33:29,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:29,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958712702] [2021-11-06 15:33:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:29,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:29,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:29,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:29,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958712702] [2021-11-06 15:33:29,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958712702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:29,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:29,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:33:29,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169211310] [2021-11-06 15:33:29,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:33:29,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:29,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:33:29,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:29,711 INFO L87 Difference]: Start difference. First operand 171 states and 219 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-06 15:33:29,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:29,780 INFO L93 Difference]: Finished difference Result 473 states and 616 transitions. [2021-11-06 15:33:29,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:33:29,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-11-06 15:33:29,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:29,786 INFO L225 Difference]: With dead ends: 473 [2021-11-06 15:33:29,786 INFO L226 Difference]: Without dead ends: 309 [2021-11-06 15:33:29,789 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-06 15:33:29,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-11-06 15:33:29,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 305 states have (on average 1.3147540983606558) internal successors, (401), 308 states have internal predecessors, (401), 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) [2021-11-06 15:33:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 401 transitions. [2021-11-06 15:33:29,809 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 401 transitions. Word has length 17 [2021-11-06 15:33:29,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:29,810 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 401 transitions. [2021-11-06 15:33:29,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-06 15:33:29,811 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 401 transitions. [2021-11-06 15:33:29,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-06 15:33:29,812 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:29,812 INFO L513 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] [2021-11-06 15:33:29,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:33:29,812 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:29,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:29,819 INFO L85 PathProgramCache]: Analyzing trace with hash 994747557, now seen corresponding path program 1 times [2021-11-06 15:33:29,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:29,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993183999] [2021-11-06 15:33:29,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:29,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:29,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:29,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993183999] [2021-11-06 15:33:29,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993183999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:29,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:29,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:33:29,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959596491] [2021-11-06 15:33:29,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:33:29,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:33:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:33:29,949 INFO L87 Difference]: Start difference. First operand 309 states and 401 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-06 15:33:30,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:30,007 INFO L93 Difference]: Finished difference Result 778 states and 1008 transitions. [2021-11-06 15:33:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:33:30,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2021-11-06 15:33:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:30,010 INFO L225 Difference]: With dead ends: 778 [2021-11-06 15:33:30,010 INFO L226 Difference]: Without dead ends: 476 [2021-11-06 15:33:30,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:33:30,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-06 15:33:30,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 312. [2021-11-06 15:33:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 308 states have (on average 1.3084415584415585) internal successors, (403), 311 states have internal predecessors, (403), 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) [2021-11-06 15:33:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 403 transitions. [2021-11-06 15:33:30,047 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 403 transitions. Word has length 29 [2021-11-06 15:33:30,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:30,047 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 403 transitions. [2021-11-06 15:33:30,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-06 15:33:30,048 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 403 transitions. [2021-11-06 15:33:30,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-06 15:33:30,051 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:30,051 INFO L513 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] [2021-11-06 15:33:30,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:33:30,052 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:30,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:30,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1525212377, now seen corresponding path program 1 times [2021-11-06 15:33:30,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:30,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416023811] [2021-11-06 15:33:30,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:30,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:30,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:30,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416023811] [2021-11-06 15:33:30,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416023811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:30,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:30,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:33:30,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211586822] [2021-11-06 15:33:30,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:33:30,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:30,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:33:30,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:30,124 INFO L87 Difference]: Start difference. First operand 312 states and 403 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2021-11-06 15:33:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:30,152 INFO L93 Difference]: Finished difference Result 911 states and 1186 transitions. [2021-11-06 15:33:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:33:30,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2021-11-06 15:33:30,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:30,161 INFO L225 Difference]: With dead ends: 911 [2021-11-06 15:33:30,162 INFO L226 Difference]: Without dead ends: 606 [2021-11-06 15:33:30,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:30,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-11-06 15:33:30,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 606. [2021-11-06 15:33:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 602 states have (on average 1.303986710963455) internal successors, (785), 605 states have internal predecessors, (785), 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) [2021-11-06 15:33:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 785 transitions. [2021-11-06 15:33:30,198 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 785 transitions. Word has length 29 [2021-11-06 15:33:30,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:30,199 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 785 transitions. [2021-11-06 15:33:30,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2021-11-06 15:33:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 785 transitions. [2021-11-06 15:33:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-06 15:33:30,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:30,202 INFO L513 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] [2021-11-06 15:33:30,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:33:30,203 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:30,203 INFO L85 PathProgramCache]: Analyzing trace with hash -36936870, now seen corresponding path program 1 times [2021-11-06 15:33:30,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:30,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713685044] [2021-11-06 15:33:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:30,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:30,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:30,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713685044] [2021-11-06 15:33:30,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713685044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:30,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:30,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:33:30,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663294896] [2021-11-06 15:33:30,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:33:30,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:33:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:30,285 INFO L87 Difference]: Start difference. First operand 606 states and 785 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2021-11-06 15:33:30,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:30,301 INFO L93 Difference]: Finished difference Result 606 states and 785 transitions. [2021-11-06 15:33:30,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:33:30,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2021-11-06 15:33:30,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:30,304 INFO L225 Difference]: With dead ends: 606 [2021-11-06 15:33:30,304 INFO L226 Difference]: Without dead ends: 604 [2021-11-06 15:33:30,305 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-11-06 15:33:30,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2021-11-06 15:33:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 601 states have (on average 1.302828618968386) internal successors, (783), 603 states have internal predecessors, (783), 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) [2021-11-06 15:33:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 783 transitions. [2021-11-06 15:33:30,328 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 783 transitions. Word has length 30 [2021-11-06 15:33:30,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:30,328 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 783 transitions. [2021-11-06 15:33:30,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2021-11-06 15:33:30,329 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 783 transitions. [2021-11-06 15:33:30,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-06 15:33:30,330 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:30,331 INFO L513 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] [2021-11-06 15:33:30,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:33:30,331 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:30,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:30,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1145036399, now seen corresponding path program 1 times [2021-11-06 15:33:30,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:30,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884261942] [2021-11-06 15:33:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:30,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:30,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:30,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884261942] [2021-11-06 15:33:30,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884261942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:30,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:30,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:33:30,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437259243] [2021-11-06 15:33:30,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:33:30,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:30,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:33:30,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:30,395 INFO L87 Difference]: Start difference. First operand 604 states and 783 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-11-06 15:33:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:30,414 INFO L93 Difference]: Finished difference Result 604 states and 783 transitions. [2021-11-06 15:33:30,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:33:30,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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 31 [2021-11-06 15:33:30,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:30,417 INFO L225 Difference]: With dead ends: 604 [2021-11-06 15:33:30,417 INFO L226 Difference]: Without dead ends: 602 [2021-11-06 15:33:30,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:30,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-06 15:33:30,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2021-11-06 15:33:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 600 states have (on average 1.3016666666666667) internal successors, (781), 601 states have internal predecessors, (781), 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) [2021-11-06 15:33:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 781 transitions. [2021-11-06 15:33:30,434 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 781 transitions. Word has length 31 [2021-11-06 15:33:30,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:30,435 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 781 transitions. [2021-11-06 15:33:30,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-11-06 15:33:30,435 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 781 transitions. [2021-11-06 15:33:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-06 15:33:30,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:30,437 INFO L513 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] [2021-11-06 15:33:30,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:33:30,437 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:30,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:30,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1136383420, now seen corresponding path program 1 times [2021-11-06 15:33:30,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:30,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73502970] [2021-11-06 15:33:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:30,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:30,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:30,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:30,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73502970] [2021-11-06 15:33:30,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73502970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:30,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:30,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:33:30,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234355375] [2021-11-06 15:33:30,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:33:30,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:30,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:33:30,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:30,498 INFO L87 Difference]: Start difference. First operand 602 states and 781 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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) [2021-11-06 15:33:30,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:30,516 INFO L93 Difference]: Finished difference Result 602 states and 781 transitions. [2021-11-06 15:33:30,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:33:30,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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 32 [2021-11-06 15:33:30,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:30,519 INFO L225 Difference]: With dead ends: 602 [2021-11-06 15:33:30,519 INFO L226 Difference]: Without dead ends: 594 [2021-11-06 15:33:30,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:30,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-06 15:33:30,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2021-11-06 15:33:30,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 1.300168634064081) internal successors, (771), 593 states have internal predecessors, (771), 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) [2021-11-06 15:33:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 771 transitions. [2021-11-06 15:33:30,537 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 771 transitions. Word has length 32 [2021-11-06 15:33:30,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:30,538 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 771 transitions. [2021-11-06 15:33:30,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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) [2021-11-06 15:33:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 771 transitions. [2021-11-06 15:33:30,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 15:33:30,540 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:30,540 INFO L513 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] [2021-11-06 15:33:30,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 15:33:30,540 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:30,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:30,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1227674702, now seen corresponding path program 1 times [2021-11-06 15:33:30,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:30,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676521942] [2021-11-06 15:33:30,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:30,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:30,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:30,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676521942] [2021-11-06 15:33:30,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676521942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:30,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:30,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:33:30,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022627401] [2021-11-06 15:33:30,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:33:30,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:30,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:33:30,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:30,622 INFO L87 Difference]: Start difference. First operand 594 states and 771 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-06 15:33:30,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:30,656 INFO L93 Difference]: Finished difference Result 1239 states and 1617 transitions. [2021-11-06 15:33:30,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:33:30,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-06 15:33:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:30,659 INFO L225 Difference]: With dead ends: 1239 [2021-11-06 15:33:30,659 INFO L226 Difference]: Without dead ends: 652 [2021-11-06 15:33:30,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:30,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-06 15:33:30,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 644. [2021-11-06 15:33:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 1.3094867807153965) internal successors, (842), 643 states have internal predecessors, (842), 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) [2021-11-06 15:33:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 842 transitions. [2021-11-06 15:33:30,678 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 842 transitions. Word has length 84 [2021-11-06 15:33:30,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:30,679 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 842 transitions. [2021-11-06 15:33:30,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-06 15:33:30,679 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 842 transitions. [2021-11-06 15:33:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 15:33:30,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:30,680 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:30,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 15:33:30,681 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:30,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:30,681 INFO L85 PathProgramCache]: Analyzing trace with hash -443790983, now seen corresponding path program 1 times [2021-11-06 15:33:30,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:30,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720467347] [2021-11-06 15:33:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:30,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:33:30,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:30,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720467347] [2021-11-06 15:33:30,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720467347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:30,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:30,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:33:30,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404411652] [2021-11-06 15:33:30,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:33:30,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:30,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:33:30,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:33:30,752 INFO L87 Difference]: Start difference. First operand 644 states and 842 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-11-06 15:33:30,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:30,812 INFO L93 Difference]: Finished difference Result 1968 states and 2608 transitions. [2021-11-06 15:33:30,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:33:30,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 92 [2021-11-06 15:33:30,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:30,817 INFO L225 Difference]: With dead ends: 1968 [2021-11-06 15:33:30,817 INFO L226 Difference]: Without dead ends: 1331 [2021-11-06 15:33:30,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:33:30,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-11-06 15:33:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 656. [2021-11-06 15:33:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 1.3038167938931298) internal successors, (854), 655 states have internal predecessors, (854), 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) [2021-11-06 15:33:30,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 854 transitions. [2021-11-06 15:33:30,845 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 854 transitions. Word has length 92 [2021-11-06 15:33:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:30,846 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 854 transitions. [2021-11-06 15:33:30,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-11-06 15:33:30,846 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 854 transitions. [2021-11-06 15:33:30,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 15:33:30,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:30,847 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:30,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 15:33:30,847 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:30,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1017407904, now seen corresponding path program 1 times [2021-11-06 15:33:30,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:30,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569569565] [2021-11-06 15:33:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:30,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:33:30,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:30,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569569565] [2021-11-06 15:33:30,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569569565] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:33:30,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751988847] [2021-11-06 15:33:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:30,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:33:30,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:33:30,932 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) [2021-11-06 15:33:30,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 15:33:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:31,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 15:33:31,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:33:31,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:33:31,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751988847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:31,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:33:31,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-06 15:33:31,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979629028] [2021-11-06 15:33:31,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:33:31,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:31,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:33:31,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:33:31,448 INFO L87 Difference]: Start difference. First operand 656 states and 854 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2021-11-06 15:33:31,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:31,578 INFO L93 Difference]: Finished difference Result 2219 states and 2889 transitions. [2021-11-06 15:33:31,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 15:33:31,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 94 [2021-11-06 15:33:31,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:31,584 INFO L225 Difference]: With dead ends: 2219 [2021-11-06 15:33:31,584 INFO L226 Difference]: Without dead ends: 1570 [2021-11-06 15:33:31,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-06 15:33:31,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-11-06 15:33:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 684. [2021-11-06 15:33:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.2913616398243046) internal successors, (882), 683 states have internal predecessors, (882), 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) [2021-11-06 15:33:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 882 transitions. [2021-11-06 15:33:31,619 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 882 transitions. Word has length 94 [2021-11-06 15:33:31,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:31,620 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 882 transitions. [2021-11-06 15:33:31,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2021-11-06 15:33:31,620 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 882 transitions. [2021-11-06 15:33:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 15:33:31,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:31,624 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:31,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 15:33:31,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 15:33:31,839 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:31,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1718472482, now seen corresponding path program 1 times [2021-11-06 15:33:31,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:31,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230422682] [2021-11-06 15:33:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:31,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:33:31,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:31,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230422682] [2021-11-06 15:33:31,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230422682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:31,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:31,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:33:31,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233383003] [2021-11-06 15:33:31,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:33:31,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:31,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:33:31,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:33:31,950 INFO L87 Difference]: Start difference. First operand 684 states and 882 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2021-11-06 15:33:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:32,038 INFO L93 Difference]: Finished difference Result 1890 states and 2432 transitions. [2021-11-06 15:33:32,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:33:32,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 94 [2021-11-06 15:33:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:32,042 INFO L225 Difference]: With dead ends: 1890 [2021-11-06 15:33:32,043 INFO L226 Difference]: Without dead ends: 1213 [2021-11-06 15:33:32,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:33:32,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2021-11-06 15:33:32,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 692. [2021-11-06 15:33:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.2879884225759768) internal successors, (890), 691 states have internal predecessors, (890), 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) [2021-11-06 15:33:32,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 890 transitions. [2021-11-06 15:33:32,075 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 890 transitions. Word has length 94 [2021-11-06 15:33:32,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:32,075 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 890 transitions. [2021-11-06 15:33:32,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2021-11-06 15:33:32,075 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 890 transitions. [2021-11-06 15:33:32,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 15:33:32,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:32,076 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:32,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 15:33:32,077 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:32,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:32,077 INFO L85 PathProgramCache]: Analyzing trace with hash 877065478, now seen corresponding path program 1 times [2021-11-06 15:33:32,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:32,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958450138] [2021-11-06 15:33:32,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:32,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:33:32,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:32,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958450138] [2021-11-06 15:33:32,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958450138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:32,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:32,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 15:33:32,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818568495] [2021-11-06 15:33:32,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 15:33:32,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:32,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 15:33:32,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:33:32,220 INFO L87 Difference]: Start difference. First operand 692 states and 890 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 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) [2021-11-06 15:33:32,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:32,513 INFO L93 Difference]: Finished difference Result 2492 states and 3214 transitions. [2021-11-06 15:33:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 15:33:32,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 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 96 [2021-11-06 15:33:32,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:32,519 INFO L225 Difference]: With dead ends: 2492 [2021-11-06 15:33:32,519 INFO L226 Difference]: Without dead ends: 1807 [2021-11-06 15:33:32,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-11-06 15:33:32,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2021-11-06 15:33:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 716. [2021-11-06 15:33:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.2783216783216784) internal successors, (914), 715 states have internal predecessors, (914), 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) [2021-11-06 15:33:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 914 transitions. [2021-11-06 15:33:32,573 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 914 transitions. Word has length 96 [2021-11-06 15:33:32,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:32,573 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 914 transitions. [2021-11-06 15:33:32,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 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) [2021-11-06 15:33:32,573 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 914 transitions. [2021-11-06 15:33:32,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 15:33:32,574 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:32,574 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:32,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 15:33:32,575 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:32,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:32,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1460316022, now seen corresponding path program 1 times [2021-11-06 15:33:32,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:32,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552704841] [2021-11-06 15:33:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:32,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:33:32,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:32,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552704841] [2021-11-06 15:33:32,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552704841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:32,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:32,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 15:33:32,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127831921] [2021-11-06 15:33:32,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 15:33:32,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:32,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 15:33:32,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:33:32,715 INFO L87 Difference]: Start difference. First operand 716 states and 914 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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) [2021-11-06 15:33:33,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:33,022 INFO L93 Difference]: Finished difference Result 2982 states and 3848 transitions. [2021-11-06 15:33:33,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 15:33:33,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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 98 [2021-11-06 15:33:33,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:33,029 INFO L225 Difference]: With dead ends: 2982 [2021-11-06 15:33:33,029 INFO L226 Difference]: Without dead ends: 2273 [2021-11-06 15:33:33,030 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-06 15:33:33,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2021-11-06 15:33:33,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 744. [2021-11-06 15:33:33,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 1.2732166890982504) internal successors, (946), 743 states have internal predecessors, (946), 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) [2021-11-06 15:33:33,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 946 transitions. [2021-11-06 15:33:33,077 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 946 transitions. Word has length 98 [2021-11-06 15:33:33,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:33,077 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 946 transitions. [2021-11-06 15:33:33,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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) [2021-11-06 15:33:33,078 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 946 transitions. [2021-11-06 15:33:33,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 15:33:33,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:33,079 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:33,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 15:33:33,080 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:33,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:33,080 INFO L85 PathProgramCache]: Analyzing trace with hash -222859706, now seen corresponding path program 1 times [2021-11-06 15:33:33,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:33,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459664728] [2021-11-06 15:33:33,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:33,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:33:33,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:33,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459664728] [2021-11-06 15:33:33,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459664728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:33,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:33,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:33:33,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243839331] [2021-11-06 15:33:33,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:33:33,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:33,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:33:33,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:33:33,156 INFO L87 Difference]: Start difference. First operand 744 states and 946 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-06 15:33:33,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:33,362 INFO L93 Difference]: Finished difference Result 2534 states and 3222 transitions. [2021-11-06 15:33:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 15:33:33,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 100 [2021-11-06 15:33:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:33,368 INFO L225 Difference]: With dead ends: 2534 [2021-11-06 15:33:33,369 INFO L226 Difference]: Without dead ends: 2163 [2021-11-06 15:33:33,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:33:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-11-06 15:33:33,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 756. [2021-11-06 15:33:33,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 1.2688741721854304) internal successors, (958), 755 states have internal predecessors, (958), 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) [2021-11-06 15:33:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 958 transitions. [2021-11-06 15:33:33,424 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 958 transitions. Word has length 100 [2021-11-06 15:33:33,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:33,425 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 958 transitions. [2021-11-06 15:33:33,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-06 15:33:33,425 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 958 transitions. [2021-11-06 15:33:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-06 15:33:33,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:33,426 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:33,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 15:33:33,426 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:33,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:33,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1656738494, now seen corresponding path program 1 times [2021-11-06 15:33:33,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:33,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303898858] [2021-11-06 15:33:33,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:33,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:33,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:33:33,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:33,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303898858] [2021-11-06 15:33:33,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303898858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:33,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:33,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:33:33,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293644179] [2021-11-06 15:33:33,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:33:33,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:33,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:33:33,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:33:33,529 INFO L87 Difference]: Start difference. First operand 756 states and 958 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2021-11-06 15:33:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:33,763 INFO L93 Difference]: Finished difference Result 2700 states and 3434 transitions. [2021-11-06 15:33:33,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:33:33,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 102 [2021-11-06 15:33:33,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:33,769 INFO L225 Difference]: With dead ends: 2700 [2021-11-06 15:33:33,769 INFO L226 Difference]: Without dead ends: 1951 [2021-11-06 15:33:33,772 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:33:33,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2021-11-06 15:33:33,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 768. [2021-11-06 15:33:33,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.2646675358539765) internal successors, (970), 767 states have internal predecessors, (970), 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) [2021-11-06 15:33:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 970 transitions. [2021-11-06 15:33:33,829 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 970 transitions. Word has length 102 [2021-11-06 15:33:33,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:33,829 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 970 transitions. [2021-11-06 15:33:33,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2021-11-06 15:33:33,829 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 970 transitions. [2021-11-06 15:33:33,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 15:33:33,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:33,831 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:33,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 15:33:33,831 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:33,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1418219362, now seen corresponding path program 1 times [2021-11-06 15:33:33,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:33,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597658536] [2021-11-06 15:33:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:33,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:34,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:33:34,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:34,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597658536] [2021-11-06 15:33:34,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597658536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:34,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:34,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 15:33:34,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782895154] [2021-11-06 15:33:34,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 15:33:34,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:34,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 15:33:34,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:33:34,127 INFO L87 Difference]: Start difference. First operand 768 states and 970 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 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) [2021-11-06 15:33:34,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:34,728 INFO L93 Difference]: Finished difference Result 2610 states and 3322 transitions. [2021-11-06 15:33:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 15:33:34,729 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 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 104 [2021-11-06 15:33:34,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:34,735 INFO L225 Difference]: With dead ends: 2610 [2021-11-06 15:33:34,735 INFO L226 Difference]: Without dead ends: 2227 [2021-11-06 15:33:34,737 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2021-11-06 15:33:34,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2021-11-06 15:33:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 774. [2021-11-06 15:33:34,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 1.2626131953428201) internal successors, (976), 773 states have internal predecessors, (976), 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) [2021-11-06 15:33:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 976 transitions. [2021-11-06 15:33:34,813 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 976 transitions. Word has length 104 [2021-11-06 15:33:34,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:34,813 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 976 transitions. [2021-11-06 15:33:34,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 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) [2021-11-06 15:33:34,814 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 976 transitions. [2021-11-06 15:33:34,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 15:33:34,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:34,815 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:34,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 15:33:34,815 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:34,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:34,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1114193399, now seen corresponding path program 1 times [2021-11-06 15:33:34,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:34,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843776961] [2021-11-06 15:33:34,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:34,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:33:34,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:34,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843776961] [2021-11-06 15:33:34,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843776961] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:33:34,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023276124] [2021-11-06 15:33:34,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:34,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:33:34,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:33:34,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:33:34,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 15:33:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:35,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 15:33:35,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:33:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:33:35,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023276124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:35,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:33:35,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-06 15:33:35,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150991549] [2021-11-06 15:33:35,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:33:35,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:35,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:33:35,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:33:35,549 INFO L87 Difference]: Start difference. First operand 774 states and 976 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-11-06 15:33:35,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:35,798 INFO L93 Difference]: Finished difference Result 2309 states and 2914 transitions. [2021-11-06 15:33:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:33:35,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 125 [2021-11-06 15:33:35,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:35,805 INFO L225 Difference]: With dead ends: 2309 [2021-11-06 15:33:35,805 INFO L226 Difference]: Without dead ends: 2304 [2021-11-06 15:33:35,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:33:35,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2021-11-06 15:33:36,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 2258. [2021-11-06 15:33:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2258 states, 2257 states have (on average 1.2662826761187418) internal successors, (2858), 2257 states have internal predecessors, (2858), 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) [2021-11-06 15:33:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2258 states to 2258 states and 2858 transitions. [2021-11-06 15:33:36,016 INFO L78 Accepts]: Start accepts. Automaton has 2258 states and 2858 transitions. Word has length 125 [2021-11-06 15:33:36,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:36,016 INFO L470 AbstractCegarLoop]: Abstraction has 2258 states and 2858 transitions. [2021-11-06 15:33:36,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-11-06 15:33:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2258 states and 2858 transitions. [2021-11-06 15:33:36,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 15:33:36,019 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:36,019 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:36,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 15:33:36,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-06 15:33:36,239 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1815257977, now seen corresponding path program 1 times [2021-11-06 15:33:36,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:36,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470030578] [2021-11-06 15:33:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:36,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:33:36,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:36,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470030578] [2021-11-06 15:33:36,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470030578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:36,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:36,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:33:36,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972647845] [2021-11-06 15:33:36,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:33:36,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:36,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:33:36,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:33:36,313 INFO L87 Difference]: Start difference. First operand 2258 states and 2858 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-11-06 15:33:36,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:36,758 INFO L93 Difference]: Finished difference Result 7337 states and 9347 transitions. [2021-11-06 15:33:36,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:33:36,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 125 [2021-11-06 15:33:36,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:36,773 INFO L225 Difference]: With dead ends: 7337 [2021-11-06 15:33:36,773 INFO L226 Difference]: Without dead ends: 5086 [2021-11-06 15:33:36,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:33:36,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2021-11-06 15:33:36,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 2270. [2021-11-06 15:33:36,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2270 states, 2269 states have (on average 1.2648743940061702) internal successors, (2870), 2269 states have internal predecessors, (2870), 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) [2021-11-06 15:33:36,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 2870 transitions. [2021-11-06 15:33:36,990 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 2870 transitions. Word has length 125 [2021-11-06 15:33:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:36,991 INFO L470 AbstractCegarLoop]: Abstraction has 2270 states and 2870 transitions. [2021-11-06 15:33:36,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-11-06 15:33:36,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 2870 transitions. [2021-11-06 15:33:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 15:33:36,993 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:36,994 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:36,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 15:33:36,994 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:36,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:36,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2113835711, now seen corresponding path program 1 times [2021-11-06 15:33:36,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:36,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291429242] [2021-11-06 15:33:36,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:36,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:33:37,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:37,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291429242] [2021-11-06 15:33:37,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291429242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:37,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:37,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:33:37,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014630251] [2021-11-06 15:33:37,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:33:37,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:37,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:33:37,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:33:37,082 INFO L87 Difference]: Start difference. First operand 2270 states and 2870 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2021-11-06 15:33:37,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:37,420 INFO L93 Difference]: Finished difference Result 5674 states and 7204 transitions. [2021-11-06 15:33:37,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:33:37,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 129 [2021-11-06 15:33:37,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:37,440 INFO L225 Difference]: With dead ends: 5674 [2021-11-06 15:33:37,440 INFO L226 Difference]: Without dead ends: 3387 [2021-11-06 15:33:37,443 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:33:37,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2021-11-06 15:33:37,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 2270. [2021-11-06 15:33:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2270 states, 2269 states have (on average 1.259585720581754) internal successors, (2858), 2269 states have internal predecessors, (2858), 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) [2021-11-06 15:33:37,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 2858 transitions. [2021-11-06 15:33:37,634 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 2858 transitions. Word has length 129 [2021-11-06 15:33:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:37,636 INFO L470 AbstractCegarLoop]: Abstraction has 2270 states and 2858 transitions. [2021-11-06 15:33:37,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2021-11-06 15:33:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 2858 transitions. [2021-11-06 15:33:37,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 15:33:37,638 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:37,639 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:37,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 15:33:37,639 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:37,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash -199931299, now seen corresponding path program 1 times [2021-11-06 15:33:37,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:37,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389115963] [2021-11-06 15:33:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:37,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:38,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:38,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389115963] [2021-11-06 15:33:38,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389115963] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:33:38,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633206801] [2021-11-06 15:33:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:38,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:33:38,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:33:38,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:33:38,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 15:33:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:39,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 111 conjunts are in the unsatisfiable core [2021-11-06 15:33:39,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:33:39,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-06 15:33:39,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 15:33:39,501 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-06 15:33:39,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 34 [2021-11-06 15:33:39,509 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-06 15:33:39,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-06 15:33:39,970 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-06 15:33:39,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 43 [2021-11-06 15:33:40,831 INFO L354 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-11-06 15:33:40,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 41 treesize of output 59 [2021-11-06 15:33:41,476 INFO L354 Elim1Store]: treesize reduction 40, result has 29.8 percent of original size [2021-11-06 15:33:41,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 50 [2021-11-06 15:33:56,559 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-06 15:33:56,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2021-11-06 15:33:56,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2021-11-06 15:33:56,922 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-06 15:33:56,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2021-11-06 15:33:56,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2021-11-06 15:33:56,993 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-06 15:33:56,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 68 [2021-11-06 15:33:57,004 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-06 15:33:57,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2021-11-06 15:34:06,208 WARN L207 SmtUtils]: Spent 6.83 s on a formula simplification. DAG size of input: 1000 DAG size of output: 390 [2021-11-06 15:34:06,209 INFO L354 Elim1Store]: treesize reduction 6824, result has 10.2 percent of original size [2021-11-06 15:34:06,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 77 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 81 new quantified variables, introduced 159 case distinctions, treesize of input 17871223 treesize of output 7458945 [2021-11-06 15:34:25,480 WARN L207 SmtUtils]: Spent 19.27 s on a formula simplification that was a NOOP. DAG size: 2503 [2021-11-06 15:34:44,645 WARN L207 SmtUtils]: Spent 19.14 s on a formula simplification that was a NOOP. DAG size: 2497 [2021-11-06 15:36:11,461 WARN L207 SmtUtils]: Spent 1.39 m on a formula simplification. DAG size of input: 3231 DAG size of output: 1110 [2021-11-06 15:36:11,463 INFO L354 Elim1Store]: treesize reduction 32874, result has 15.5 percent of original size [2021-11-06 15:36:11,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 77 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 385 case distinctions, treesize of input 7459546 treesize of output 7463579 [2021-11-06 15:36:31,322 WARN L207 SmtUtils]: Spent 19.85 s on a formula simplification that was a NOOP. DAG size: 3407 [2021-11-06 15:36:51,110 WARN L207 SmtUtils]: Spent 19.56 s on a formula simplification that was a NOOP. DAG size: 3403 [2021-11-06 15:40:57,917 WARN L207 SmtUtils]: Spent 3.57 m on a formula simplification. DAG size of input: 1809 DAG size of output: 1809 [2021-11-06 15:43:10,944 WARN L207 SmtUtils]: Spent 18.95 s on a formula simplification that was a NOOP. DAG size: 1788 [2021-11-06 15:43:59,928 WARN L207 SmtUtils]: Spent 10.15 s on a formula simplification that was a NOOP. DAG size: 1779 [2021-11-06 15:44:38,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:44:38,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 73 [2021-11-06 15:44:38,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:44:38,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:44:38,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:44:38,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:44:38,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:44:38,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:44:38,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:44:38,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:44:38,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:44:38,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:44:38,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2021-11-06 15:45:45,892 WARN L207 SmtUtils]: Spent 19.32 s on a formula simplification that was a NOOP. DAG size: 1788 [2021-11-06 15:46:33,839 WARN L207 SmtUtils]: Spent 9.57 s on a formula simplification that was a NOOP. DAG size: 1779 [2021-11-06 15:47:12,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:47:12,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 73 [2021-11-06 15:47:12,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:47:12,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:47:12,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:47:12,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:47:12,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:47:12,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:47:12,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:47:12,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:47:12,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:47:12,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 15:47:12,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 Killed by 15