./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.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 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 17:24:46,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 17:24:46,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 17:24:46,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 17:24:46,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 17:24:46,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 17:24:46,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 17:24:46,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 17:24:46,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 17:24:46,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 17:24:46,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 17:24:46,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 17:24:46,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 17:24:46,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 17:24:46,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 17:24:46,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 17:24:46,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 17:24:46,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 17:24:46,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 17:24:46,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 17:24:46,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 17:24:46,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 17:24:46,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 17:24:46,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 17:24:46,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 17:24:46,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 17:24:46,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 17:24:46,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 17:24:46,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 17:24:46,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 17:24:46,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 17:24:46,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 17:24:46,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 17:24:46,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 17:24:46,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 17:24:46,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 17:24:46,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 17:24:46,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 17:24:46,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 17:24:46,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 17:24:46,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 17:24:46,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 17:24:46,229 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 17:24:46,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 17:24:46,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 17:24:46,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 17:24:46,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 17:24:46,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 17:24:46,233 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 17:24:46,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 17:24:46,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 17:24:46,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 17:24:46,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 17:24:46,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 17:24:46,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 17:24:46,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 17:24:46,235 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 17:24:46,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 17:24:46,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 17:24:46,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 17:24:46,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 17:24:46,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:24:46,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 17:24:46,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 17:24:46,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 17:24:46,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 17:24:46,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 17:24:46,237 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 17:24:46,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 17:24:46,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 17:24:46,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 17:24:46,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd [2021-11-05 17:24:46,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 17:24:46,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 17:24:46,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 17:24:46,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 17:24:46,546 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 17:24:46,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-05 17:24:46,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb05925a7/1eb1155ecd704548a6d6961bbdadce81/FLAG40c6fc4d5 [2021-11-05 17:24:47,393 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 17:24:47,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-05 17:24:47,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb05925a7/1eb1155ecd704548a6d6961bbdadce81/FLAG40c6fc4d5 [2021-11-05 17:24:47,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb05925a7/1eb1155ecd704548a6d6961bbdadce81 [2021-11-05 17:24:47,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 17:24:47,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 17:24:47,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 17:24:47,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 17:24:47,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 17:24:47,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:24:47" (1/1) ... [2021-11-05 17:24:47,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac9ecf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:24:47, skipping insertion in model container [2021-11-05 17:24:47,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:24:47" (1/1) ... [2021-11-05 17:24:47,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 17:24:47,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 17:24:49,798 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-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-05 17:24:49,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:24:49,891 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 17:24:50,243 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-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-05 17:24:50,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:24:50,490 INFO L208 MainTranslator]: Completed translation [2021-11-05 17:24:50,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:24:50 WrapperNode [2021-11-05 17:24:50,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 17:24:50,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 17:24:50,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 17:24:50,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 17:24:50,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:24:50" (1/1) ... [2021-11-05 17:24:50,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:24:50" (1/1) ... [2021-11-05 17:24:51,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 17:24:51,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 17:24:51,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 17:24:51,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 17:24:51,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:24:50" (1/1) ... [2021-11-05 17:24:51,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:24:50" (1/1) ... [2021-11-05 17:24:52,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:24:50" (1/1) ... [2021-11-05 17:24:52,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:24:50" (1/1) ... [2021-11-05 17:24:52,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:24:50" (1/1) ... [2021-11-05 17:24:52,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:24:50" (1/1) ... [2021-11-05 17:24:52,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:24:50" (1/1) ... [2021-11-05 17:24:52,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 17:24:52,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 17:24:52,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 17:24:52,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 17:24:52,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:24:50" (1/1) ... [2021-11-05 17:24:52,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:24:52,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:24:53,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 17:24:53,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 17:24:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 17:24:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 17:24:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 17:24:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 17:24:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 17:24:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 17:24:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 17:24:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 17:24:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 17:24:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 17:24:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 17:24:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 17:24:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 17:24:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 17:24:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 17:25:11,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 17:25:11,613 INFO L299 CfgBuilder]: Removed 8487 assume(true) statements. [2021-11-05 17:25:11,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:25:11 BoogieIcfgContainer [2021-11-05 17:25:11,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 17:25:11,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 17:25:11,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 17:25:11,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 17:25:11,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 05:24:47" (1/3) ... [2021-11-05 17:25:11,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e116877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:25:11, skipping insertion in model container [2021-11-05 17:25:11,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:24:50" (2/3) ... [2021-11-05 17:25:11,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e116877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:25:11, skipping insertion in model container [2021-11-05 17:25:11,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:25:11" (3/3) ... [2021-11-05 17:25:11,627 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-05 17:25:11,631 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 17:25:11,631 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-05 17:25:11,693 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 17:25:11,704 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 17:25:11,705 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-05 17:25:11,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 5110 states, 5103 states have (on average 1.231628453850676) internal successors, (6285), 5109 states have internal predecessors, (6285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:11,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 17:25:11,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:25:11,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:25:11,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 17:25:11,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:25:11,814 INFO L85 PathProgramCache]: Analyzing trace with hash -623761508, now seen corresponding path program 1 times [2021-11-05 17:25:11,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:25:11,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269197218] [2021-11-05 17:25:11,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:11,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:25:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:12,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:25:12,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:25:12,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269197218] [2021-11-05 17:25:12,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269197218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:25:12,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:25:12,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:25:12,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593431543] [2021-11-05 17:25:12,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:25:12,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 17:25:12,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:25:12,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 17:25:12,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 17:25:12,334 INFO L87 Difference]: Start difference. First operand has 5110 states, 5103 states have (on average 1.231628453850676) internal successors, (6285), 5109 states have internal predecessors, (6285), 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 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:25:12,699 INFO L93 Difference]: Finished difference Result 10186 states and 12525 transitions. [2021-11-05 17:25:12,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 17:25:12,715 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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 69 [2021-11-05 17:25:12,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:25:12,765 INFO L225 Difference]: With dead ends: 10186 [2021-11-05 17:25:12,765 INFO L226 Difference]: Without dead ends: 5056 [2021-11-05 17:25:12,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 17:25:12,788 INFO L933 BasicCegarLoop]: 6195 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6195 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 17:25:12,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6195 Invalid, 0 Unknown, 0 Unchecked, 14.53ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 17:25:12,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2021-11-05 17:25:12,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 5056. [2021-11-05 17:25:12,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5056 states, 5050 states have (on average 1.218019801980198) internal successors, (6151), 5055 states have internal predecessors, (6151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:12,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5056 states to 5056 states and 6151 transitions. [2021-11-05 17:25:12,975 INFO L78 Accepts]: Start accepts. Automaton has 5056 states and 6151 transitions. Word has length 69 [2021-11-05 17:25:12,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:25:12,975 INFO L470 AbstractCegarLoop]: Abstraction has 5056 states and 6151 transitions. [2021-11-05 17:25:12,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:12,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5056 states and 6151 transitions. [2021-11-05 17:25:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 17:25:12,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:25:12,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:25:12,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 17:25:12,985 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 17:25:12,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:25:12,986 INFO L85 PathProgramCache]: Analyzing trace with hash -606369396, now seen corresponding path program 1 times [2021-11-05 17:25:12,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:25:12,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437877007] [2021-11-05 17:25:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:12,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:25:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:13,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:25:13,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:25:13,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437877007] [2021-11-05 17:25:13,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437877007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:25:13,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:25:13,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:25:13,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264030697] [2021-11-05 17:25:13,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:25:13,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:25:13,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:25:13,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:25:13,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:13,255 INFO L87 Difference]: Start difference. First operand 5056 states and 6151 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:14,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:25:14,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:25:14,994 INFO L93 Difference]: Finished difference Result 15006 states and 18281 transitions. [2021-11-05 17:25:14,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:25:14,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2021-11-05 17:25:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:25:15,036 INFO L225 Difference]: With dead ends: 15006 [2021-11-05 17:25:15,037 INFO L226 Difference]: Without dead ends: 10008 [2021-11-05 17:25:15,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:15,057 INFO L933 BasicCegarLoop]: 6148 mSDtfsCounter, 6041 mSDsluCounter, 6131 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1359.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6041 SdHoareTripleChecker+Valid, 12279 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.73ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1429.63ms IncrementalHoareTripleChecker+Time [2021-11-05 17:25:15,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6041 Valid, 12279 Invalid, 15 Unknown, 0 Unchecked, 29.73ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 1429.63ms Time] [2021-11-05 17:25:15,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10008 states. [2021-11-05 17:25:15,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10008 to 10000. [2021-11-05 17:25:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10000 states, 9994 states have (on average 1.2193315989593756) internal successors, (12186), 9999 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10000 states to 10000 states and 12186 transitions. [2021-11-05 17:25:15,330 INFO L78 Accepts]: Start accepts. Automaton has 10000 states and 12186 transitions. Word has length 69 [2021-11-05 17:25:15,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:25:15,330 INFO L470 AbstractCegarLoop]: Abstraction has 10000 states and 12186 transitions. [2021-11-05 17:25:15,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:15,331 INFO L276 IsEmpty]: Start isEmpty. Operand 10000 states and 12186 transitions. [2021-11-05 17:25:15,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-05 17:25:15,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:25:15,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:25:15,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 17:25:15,334 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 17:25:15,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:25:15,335 INFO L85 PathProgramCache]: Analyzing trace with hash -146693713, now seen corresponding path program 1 times [2021-11-05 17:25:15,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:25:15,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740680519] [2021-11-05 17:25:15,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:15,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:25:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:25:15,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:25:15,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740680519] [2021-11-05 17:25:15,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740680519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:25:15,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:25:15,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:25:15,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713658006] [2021-11-05 17:25:15,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:25:15,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:25:15,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:25:15,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:25:15,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:15,493 INFO L87 Difference]: Start difference. First operand 10000 states and 12186 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:25:15,734 INFO L93 Difference]: Finished difference Result 10000 states and 12186 transitions. [2021-11-05 17:25:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:25:15,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-05 17:25:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:25:15,775 INFO L225 Difference]: With dead ends: 10000 [2021-11-05 17:25:15,775 INFO L226 Difference]: Without dead ends: 9998 [2021-11-05 17:25:15,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.98ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:15,783 INFO L933 BasicCegarLoop]: 6148 mSDtfsCounter, 6113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6113 SdHoareTripleChecker+Valid, 6148 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.98ms IncrementalHoareTripleChecker+Time [2021-11-05 17:25:15,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6113 Valid, 6148 Invalid, 2 Unknown, 0 Unchecked, 16.62ms Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 32.98ms Time] [2021-11-05 17:25:15,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9998 states. [2021-11-05 17:25:16,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9998 to 9998. [2021-11-05 17:25:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9998 states, 9993 states have (on average 1.2192534774342039) internal successors, (12184), 9997 states have internal predecessors, (12184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9998 states to 9998 states and 12184 transitions. [2021-11-05 17:25:16,199 INFO L78 Accepts]: Start accepts. Automaton has 9998 states and 12184 transitions. Word has length 78 [2021-11-05 17:25:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:25:16,200 INFO L470 AbstractCegarLoop]: Abstraction has 9998 states and 12184 transitions. [2021-11-05 17:25:16,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 9998 states and 12184 transitions. [2021-11-05 17:25:16,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 17:25:16,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:25:16,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:25:16,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 17:25:16,204 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 17:25:16,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:25:16,205 INFO L85 PathProgramCache]: Analyzing trace with hash -252516706, now seen corresponding path program 1 times [2021-11-05 17:25:16,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:25:16,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366358704] [2021-11-05 17:25:16,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:16,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:25:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:16,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:25:16,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:25:16,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366358704] [2021-11-05 17:25:16,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366358704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:25:16,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:25:16,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:25:16,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458018964] [2021-11-05 17:25:16,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:25:16,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:25:16,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:25:16,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:25:16,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:16,430 INFO L87 Difference]: Start difference. First operand 9998 states and 12184 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:16,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:25:16,989 INFO L93 Difference]: Finished difference Result 29844 states and 36397 transitions. [2021-11-05 17:25:16,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:25:16,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-11-05 17:25:16,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:25:17,060 INFO L225 Difference]: With dead ends: 29844 [2021-11-05 17:25:17,060 INFO L226 Difference]: Without dead ends: 19900 [2021-11-05 17:25:17,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:17,087 INFO L933 BasicCegarLoop]: 6143 mSDtfsCounter, 6092 mSDsluCounter, 6067 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6092 SdHoareTripleChecker+Valid, 12210 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.69ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.28ms IncrementalHoareTripleChecker+Time [2021-11-05 17:25:17,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6092 Valid, 12210 Invalid, 26 Unknown, 0 Unchecked, 20.69ms Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 56.28ms Time] [2021-11-05 17:25:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19900 states. [2021-11-05 17:25:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19900 to 19896. [2021-11-05 17:25:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19896 states, 19891 states have (on average 1.2194962545875019) internal successors, (24257), 19895 states have internal predecessors, (24257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19896 states to 19896 states and 24257 transitions. [2021-11-05 17:25:17,918 INFO L78 Accepts]: Start accepts. Automaton has 19896 states and 24257 transitions. Word has length 79 [2021-11-05 17:25:17,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:25:17,919 INFO L470 AbstractCegarLoop]: Abstraction has 19896 states and 24257 transitions. [2021-11-05 17:25:17,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 19896 states and 24257 transitions. [2021-11-05 17:25:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-05 17:25:17,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:25:17,941 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:25:17,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 17:25:17,942 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 17:25:17,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:25:17,942 INFO L85 PathProgramCache]: Analyzing trace with hash 976309893, now seen corresponding path program 1 times [2021-11-05 17:25:17,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:25:17,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66349953] [2021-11-05 17:25:17,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:17,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:25:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:18,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:25:18,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:25:18,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66349953] [2021-11-05 17:25:18,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66349953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:25:18,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:25:18,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:25:18,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697760446] [2021-11-05 17:25:18,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:25:18,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:25:18,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:25:18,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:25:18,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:18,169 INFO L87 Difference]: Start difference. First operand 19896 states and 24257 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:19,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:25:19,199 INFO L93 Difference]: Finished difference Result 53309 states and 64925 transitions. [2021-11-05 17:25:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:25:19,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 163 [2021-11-05 17:25:19,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:25:19,293 INFO L225 Difference]: With dead ends: 53309 [2021-11-05 17:25:19,293 INFO L226 Difference]: Without dead ends: 33471 [2021-11-05 17:25:19,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:19,343 INFO L933 BasicCegarLoop]: 6167 mSDtfsCounter, 4212 mSDsluCounter, 5980 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4212 SdHoareTripleChecker+Valid, 12147 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.04ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 151.44ms IncrementalHoareTripleChecker+Time [2021-11-05 17:25:19,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4212 Valid, 12147 Invalid, 103 Unknown, 0 Unchecked, 26.04ms Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 151.44ms Time] [2021-11-05 17:25:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33471 states. [2021-11-05 17:25:20,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33471 to 31820. [2021-11-05 17:25:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31820 states, 31815 states have (on average 1.2208077950652207) internal successors, (38840), 31819 states have internal predecessors, (38840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31820 states to 31820 states and 38840 transitions. [2021-11-05 17:25:20,442 INFO L78 Accepts]: Start accepts. Automaton has 31820 states and 38840 transitions. Word has length 163 [2021-11-05 17:25:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:25:20,443 INFO L470 AbstractCegarLoop]: Abstraction has 31820 states and 38840 transitions. [2021-11-05 17:25:20,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 31820 states and 38840 transitions. [2021-11-05 17:25:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-05 17:25:20,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:25:20,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:25:20,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 17:25:20,460 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 17:25:20,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:25:20,461 INFO L85 PathProgramCache]: Analyzing trace with hash -783847760, now seen corresponding path program 1 times [2021-11-05 17:25:20,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:25:20,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021851486] [2021-11-05 17:25:20,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:20,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:25:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:25:20,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:25:20,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021851486] [2021-11-05 17:25:20,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021851486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:25:20,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:25:20,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:25:20,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863659117] [2021-11-05 17:25:20,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:25:20,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:25:20,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:25:20,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:25:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:20,703 INFO L87 Difference]: Start difference. First operand 31820 states and 38840 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:22,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:25:22,085 INFO L93 Difference]: Finished difference Result 77335 states and 94854 transitions. [2021-11-05 17:25:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:25:22,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 278 [2021-11-05 17:25:22,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:25:22,210 INFO L225 Difference]: With dead ends: 77335 [2021-11-05 17:25:22,211 INFO L226 Difference]: Without dead ends: 45573 [2021-11-05 17:25:22,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:22,285 INFO L933 BasicCegarLoop]: 6153 mSDtfsCounter, 3423 mSDsluCounter, 6023 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3423 SdHoareTripleChecker+Valid, 12176 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.90ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.80ms IncrementalHoareTripleChecker+Time [2021-11-05 17:25:22,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3423 Valid, 12176 Invalid, 65 Unknown, 0 Unchecked, 18.90ms Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 93.80ms Time] [2021-11-05 17:25:22,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45573 states. [2021-11-05 17:25:23,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45573 to 45564. [2021-11-05 17:25:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45564 states, 45559 states have (on average 1.2305362277486336) internal successors, (56062), 45563 states have internal predecessors, (56062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45564 states to 45564 states and 56062 transitions. [2021-11-05 17:25:23,816 INFO L78 Accepts]: Start accepts. Automaton has 45564 states and 56062 transitions. Word has length 278 [2021-11-05 17:25:23,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:25:23,816 INFO L470 AbstractCegarLoop]: Abstraction has 45564 states and 56062 transitions. [2021-11-05 17:25:23,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:23,816 INFO L276 IsEmpty]: Start isEmpty. Operand 45564 states and 56062 transitions. [2021-11-05 17:25:23,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-05 17:25:23,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:25:23,837 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:25:23,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 17:25:23,838 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 17:25:23,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:25:23,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2075658536, now seen corresponding path program 1 times [2021-11-05 17:25:23,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:25:23,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500973902] [2021-11-05 17:25:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:23,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:25:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:25:24,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:25:24,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500973902] [2021-11-05 17:25:24,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500973902] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:25:24,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248068829] [2021-11-05 17:25:24,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:24,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:25:24,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:25:24,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 17:25:24,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 17:25:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:25,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 6404 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 17:25:25,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:25:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:25:26,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 17:25:26,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248068829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:25:26,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 17:25:26,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 17:25:26,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831530134] [2021-11-05 17:25:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:25:26,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:25:26,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:25:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:25:26,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:25:26,173 INFO L87 Difference]: Start difference. First operand 45564 states and 56062 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:27,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:25:27,714 INFO L93 Difference]: Finished difference Result 105159 states and 129954 transitions. [2021-11-05 17:25:27,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:25:27,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 325 [2021-11-05 17:25:27,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:25:27,890 INFO L225 Difference]: With dead ends: 105159 [2021-11-05 17:25:27,891 INFO L226 Difference]: Without dead ends: 59653 [2021-11-05 17:25:27,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.00ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:25:27,991 INFO L933 BasicCegarLoop]: 6126 mSDtfsCounter, 3485 mSDsluCounter, 5992 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3485 SdHoareTripleChecker+Valid, 12118 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.13ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137.08ms IncrementalHoareTripleChecker+Time [2021-11-05 17:25:27,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3485 Valid, 12118 Invalid, 105 Unknown, 0 Unchecked, 13.13ms Time], IncrementalHoareTripleChecker [23 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 137.08ms Time] [2021-11-05 17:25:28,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59653 states. [2021-11-05 17:25:29,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59653 to 59644. [2021-11-05 17:25:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59644 states, 59639 states have (on average 1.2373782256577073) internal successors, (73796), 59643 states have internal predecessors, (73796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59644 states to 59644 states and 73796 transitions. [2021-11-05 17:25:29,887 INFO L78 Accepts]: Start accepts. Automaton has 59644 states and 73796 transitions. Word has length 325 [2021-11-05 17:25:29,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:25:29,887 INFO L470 AbstractCegarLoop]: Abstraction has 59644 states and 73796 transitions. [2021-11-05 17:25:29,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:29,888 INFO L276 IsEmpty]: Start isEmpty. Operand 59644 states and 73796 transitions. [2021-11-05 17:25:29,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2021-11-05 17:25:29,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:25:29,921 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:25:29,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 17:25:30,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:25:30,148 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 17:25:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:25:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash -39876190, now seen corresponding path program 1 times [2021-11-05 17:25:30,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:25:30,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843842442] [2021-11-05 17:25:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:30,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:25:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-05 17:25:30,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:25:30,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843842442] [2021-11-05 17:25:30,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843842442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:25:30,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:25:30,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:25:30,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141035315] [2021-11-05 17:25:30,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:25:30,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:25:30,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:25:30,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:25:30,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:30,718 INFO L87 Difference]: Start difference. First operand 59644 states and 73796 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:32,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:25:32,683 INFO L93 Difference]: Finished difference Result 120238 states and 148633 transitions. [2021-11-05 17:25:32,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:25:32,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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 348 [2021-11-05 17:25:32,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:25:32,927 INFO L225 Difference]: With dead ends: 120238 [2021-11-05 17:25:32,927 INFO L226 Difference]: Without dead ends: 60652 [2021-11-05 17:25:33,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:33,053 INFO L933 BasicCegarLoop]: 6134 mSDtfsCounter, 105 mSDsluCounter, 6119 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 12253 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.26ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128.42ms IncrementalHoareTripleChecker+Time [2021-11-05 17:25:33,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 12253 Invalid, 48 Unknown, 0 Unchecked, 20.26ms Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 128.42ms Time] [2021-11-05 17:25:33,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60652 states. [2021-11-05 17:25:34,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60652 to 59692. [2021-11-05 17:25:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59692 states, 59687 states have (on average 1.2371873272236835) internal successors, (73844), 59691 states have internal predecessors, (73844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59692 states to 59692 states and 73844 transitions. [2021-11-05 17:25:34,814 INFO L78 Accepts]: Start accepts. Automaton has 59692 states and 73844 transitions. Word has length 348 [2021-11-05 17:25:34,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:25:34,815 INFO L470 AbstractCegarLoop]: Abstraction has 59692 states and 73844 transitions. [2021-11-05 17:25:34,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:34,816 INFO L276 IsEmpty]: Start isEmpty. Operand 59692 states and 73844 transitions. [2021-11-05 17:25:34,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-11-05 17:25:34,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:25:34,840 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:25:34,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 17:25:34,841 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 17:25:34,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:25:34,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1610861700, now seen corresponding path program 1 times [2021-11-05 17:25:34,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:25:34,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808661789] [2021-11-05 17:25:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:34,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:25:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-05 17:25:35,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:25:35,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808661789] [2021-11-05 17:25:35,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808661789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:25:35,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:25:35,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:25:35,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176105673] [2021-11-05 17:25:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:25:35,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:25:35,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:25:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:25:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:35,210 INFO L87 Difference]: Start difference. First operand 59692 states and 73844 transitions. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:25:36,742 INFO L93 Difference]: Finished difference Result 119806 states and 148153 transitions. [2021-11-05 17:25:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:25:36,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 360 [2021-11-05 17:25:36,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:25:36,872 INFO L225 Difference]: With dead ends: 119806 [2021-11-05 17:25:36,872 INFO L226 Difference]: Without dead ends: 60172 [2021-11-05 17:25:36,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:25:36,959 INFO L933 BasicCegarLoop]: 6134 mSDtfsCounter, 45 mSDsluCounter, 6119 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 12253 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.17ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.39ms IncrementalHoareTripleChecker+Time [2021-11-05 17:25:36,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 12253 Invalid, 48 Unknown, 0 Unchecked, 7.17ms Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 64.39ms Time] [2021-11-05 17:25:37,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60172 states. [2021-11-05 17:25:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60172 to 59740. [2021-11-05 17:25:38,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59740 states, 59735 states have (on average 1.2369967355821545) internal successors, (73892), 59739 states have internal predecessors, (73892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:38,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59740 states to 59740 states and 73892 transitions. [2021-11-05 17:25:38,325 INFO L78 Accepts]: Start accepts. Automaton has 59740 states and 73892 transitions. Word has length 360 [2021-11-05 17:25:38,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:25:38,326 INFO L470 AbstractCegarLoop]: Abstraction has 59740 states and 73892 transitions. [2021-11-05 17:25:38,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:38,326 INFO L276 IsEmpty]: Start isEmpty. Operand 59740 states and 73892 transitions. [2021-11-05 17:25:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-05 17:25:38,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:25:38,343 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:25:38,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 17:25:38,343 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 17:25:38,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:25:38,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1456428464, now seen corresponding path program 1 times [2021-11-05 17:25:38,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:25:38,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081787753] [2021-11-05 17:25:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:38,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:25:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-05 17:25:38,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:25:38,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081787753] [2021-11-05 17:25:38,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081787753] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:25:38,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070427009] [2021-11-05 17:25:38,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:38,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:25:38,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:25:38,779 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) [2021-11-05 17:25:38,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 17:25:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:40,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 6878 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 17:25:40,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:25:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-05 17:25:41,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 17:25:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-05 17:25:41,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070427009] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 17:25:41,464 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 17:25:41,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 17:25:41,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20861262] [2021-11-05 17:25:41,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 17:25:41,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 17:25:41,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:25:41,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 17:25:41,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 17:25:41,467 INFO L87 Difference]: Start difference. First operand 59740 states and 73892 transitions. Second operand has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:43,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:25:43,125 INFO L93 Difference]: Finished difference Result 120862 states and 149305 transitions. [2021-11-05 17:25:43,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 17:25:43,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 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 370 [2021-11-05 17:25:43,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:25:43,226 INFO L225 Difference]: With dead ends: 120862 [2021-11-05 17:25:43,226 INFO L226 Difference]: Without dead ends: 61180 [2021-11-05 17:25:43,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 15.36ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 17:25:43,298 INFO L933 BasicCegarLoop]: 6134 mSDtfsCounter, 306 mSDsluCounter, 12273 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 18407 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.71ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 130.63ms IncrementalHoareTripleChecker+Time [2021-11-05 17:25:43,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 18407 Invalid, 134 Unknown, 0 Unchecked, 13.71ms Time], IncrementalHoareTripleChecker [49 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 130.63ms Time] [2021-11-05 17:25:43,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61180 states. [2021-11-05 17:25:44,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61180 to 61180. [2021-11-05 17:25:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61180 states, 61175 states have (on average 1.231418062934205) internal successors, (75332), 61179 states have internal predecessors, (75332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:44,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61180 states to 61180 states and 75332 transitions. [2021-11-05 17:25:44,790 INFO L78 Accepts]: Start accepts. Automaton has 61180 states and 75332 transitions. Word has length 370 [2021-11-05 17:25:44,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:25:44,791 INFO L470 AbstractCegarLoop]: Abstraction has 61180 states and 75332 transitions. [2021-11-05 17:25:44,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:44,791 INFO L276 IsEmpty]: Start isEmpty. Operand 61180 states and 75332 transitions. [2021-11-05 17:25:44,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-11-05 17:25:44,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:25:44,809 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:25:44,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-05 17:25:45,009 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,SelfDestructingSolverStorable9 [2021-11-05 17:25:45,010 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 17:25:45,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:25:45,011 INFO L85 PathProgramCache]: Analyzing trace with hash -595028404, now seen corresponding path program 2 times [2021-11-05 17:25:45,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:25:45,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245550450] [2021-11-05 17:25:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:45,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:25:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-05 17:25:45,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:25:45,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245550450] [2021-11-05 17:25:45,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245550450] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:25:45,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302767547] [2021-11-05 17:25:45,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 17:25:45,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:25:45,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:25:45,746 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) [2021-11-05 17:25:45,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 17:25:54,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-05 17:25:54,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 17:25:54,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 5919 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 17:25:54,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:25:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-05 17:25:55,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 17:25:55,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302767547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:25:55,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 17:25:55,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 17:25:55,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319690824] [2021-11-05 17:25:55,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:25:55,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:25:55,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:25:55,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:25:55,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:25:55,272 INFO L87 Difference]: Start difference. First operand 61180 states and 75332 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:56,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:25:56,434 INFO L93 Difference]: Finished difference Result 122321 states and 150629 transitions. [2021-11-05 17:25:56,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:25:56,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 400 [2021-11-05 17:25:56,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:25:56,533 INFO L225 Difference]: With dead ends: 122321 [2021-11-05 17:25:56,533 INFO L226 Difference]: Without dead ends: 61185 [2021-11-05 17:25:56,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.51ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:25:56,601 INFO L933 BasicCegarLoop]: 6144 mSDtfsCounter, 0 mSDsluCounter, 6131 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12275 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.87ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.43ms IncrementalHoareTripleChecker+Time [2021-11-05 17:25:56,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12275 Invalid, 26 Unknown, 0 Unchecked, 6.87ms Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 32.43ms Time] [2021-11-05 17:25:56,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61185 states. [2021-11-05 17:25:57,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61185 to 61185. [2021-11-05 17:25:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61185 states, 61180 states have (on average 1.2313991500490356) internal successors, (75337), 61184 states have internal predecessors, (75337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61185 states to 61185 states and 75337 transitions. [2021-11-05 17:25:57,950 INFO L78 Accepts]: Start accepts. Automaton has 61185 states and 75337 transitions. Word has length 400 [2021-11-05 17:25:57,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:25:57,951 INFO L470 AbstractCegarLoop]: Abstraction has 61185 states and 75337 transitions. [2021-11-05 17:25:57,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:25:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 61185 states and 75337 transitions. [2021-11-05 17:25:57,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2021-11-05 17:25:57,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:25:57,964 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:25:58,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 17:25:58,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:25:58,172 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-05 17:25:58,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:25:58,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1081060932, now seen corresponding path program 1 times [2021-11-05 17:25:58,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:25:58,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841451065] [2021-11-05 17:25:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:58,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:25:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:25:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-05 17:25:58,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:25:58,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841451065] [2021-11-05 17:25:58,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841451065] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:25:58,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491030145] [2021-11-05 17:25:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:25:58,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:25:58,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:25:58,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 17:25:58,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 17:26:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:26:00,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 7493 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 17:26:00,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:26:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-05 17:26:00,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 17:26:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-05 17:26:01,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491030145] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 17:26:01,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 17:26:01,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 17:26:01,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691525111] [2021-11-05 17:26:01,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 17:26:01,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 17:26:01,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:26:01,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 17:26:01,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 17:26:01,331 INFO L87 Difference]: Start difference. First operand 61185 states and 75337 transitions. Second operand has 7 states, 7 states have (on average 58.714285714285715) internal successors, (411), 7 states have internal predecessors, (411), 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)