./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ecea5961d53d2608898d65c83a7bf6d9a36712172eaf67bd828ea354982e0e3d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:00:27,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:00:27,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:00:27,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:00:27,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:00:27,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:00:27,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:00:27,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:00:27,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:00:27,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:00:27,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:00:27,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:00:27,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:00:27,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:00:27,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:00:27,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:00:27,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:00:27,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:00:27,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:00:27,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:00:27,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:00:27,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:00:27,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:00:27,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:00:27,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:00:27,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:00:27,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:00:27,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:00:27,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:00:27,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:00:27,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:00:27,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:00:27,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:00:27,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:00:27,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:00:27,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:00:27,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:00:27,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:00:27,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:00:27,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:00:27,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:00:27,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:00:27,320 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:00:27,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:00:27,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:00:27,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:00:27,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:00:27,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:00:27,322 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:00:27,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:00:27,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:00:27,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:00:27,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:00:27,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:00:27,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:00:27,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:00:27,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:00:27,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:00:27,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:00:27,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:00:27,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:00:27,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:00:27,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:00:27,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:00:27,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:00:27,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:00:27,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:00:27,326 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:00:27,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:00:27,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:00:27,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:00:27,327 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecea5961d53d2608898d65c83a7bf6d9a36712172eaf67bd828ea354982e0e3d [2021-11-06 15:00:27,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:00:27,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:00:27,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:00:27,530 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:00:27,531 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:00:27,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2021-11-06 15:00:27,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a4bf0b21/c3e1991ef297400aba114a662acdf787/FLAGef62fbfdf [2021-11-06 15:00:28,273 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:00:28,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2021-11-06 15:00:28,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a4bf0b21/c3e1991ef297400aba114a662acdf787/FLAGef62fbfdf [2021-11-06 15:00:28,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a4bf0b21/c3e1991ef297400aba114a662acdf787 [2021-11-06 15:00:28,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:00:28,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:00:28,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:00:28,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:00:28,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:00:28,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:00:28" (1/1) ... [2021-11-06 15:00:28,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd1d6e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:00:28, skipping insertion in model container [2021-11-06 15:00:28,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:00:28" (1/1) ... [2021-11-06 15:00:28,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:00:28,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:00:29,224 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5338] [2021-11-06 15:00:29,224 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5339-5340] [2021-11-06 15:00:29,337 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i[158055,158068] [2021-11-06 15:00:30,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:00:30,932 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:00:31,005 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5338] [2021-11-06 15:00:31,006 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5339-5340] [2021-11-06 15:00:31,008 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i[158055,158068] [2021-11-06 15:00:31,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:00:31,423 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:00:31,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:00:31 WrapperNode [2021-11-06 15:00:31,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:00:31,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:00:31,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:00:31,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:00:31,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:00:31" (1/1) ... [2021-11-06 15:00:31,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:00:31" (1/1) ... [2021-11-06 15:00:33,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:00:33,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:00:33,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:00:33,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:00:33,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:00:31" (1/1) ... [2021-11-06 15:00:33,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:00:31" (1/1) ... [2021-11-06 15:00:34,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:00:31" (1/1) ... [2021-11-06 15:00:34,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:00:31" (1/1) ... [2021-11-06 15:00:35,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:00:31" (1/1) ... [2021-11-06 15:00:35,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:00:31" (1/1) ... [2021-11-06 15:00:35,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:00:31" (1/1) ... [2021-11-06 15:00:36,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:00:36,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:00:36,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:00:36,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:00:36,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:00:31" (1/1) ... [2021-11-06 15:00:36,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:00:36,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:00:36,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 15:00:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:00:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:00:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:00:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:00:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:00:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:00:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:00:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:00:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:00:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:00:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:00:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:00:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:00:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:00:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:00:36,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 15:03:54,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:03:54,620 INFO L299 CfgBuilder]: Removed 20027 assume(true) statements. [2021-11-06 15:03:54,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:03:54 BoogieIcfgContainer [2021-11-06 15:03:54,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:03:54,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:03:54,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:03:54,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:03:54,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:00:28" (1/3) ... [2021-11-06 15:03:54,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33507128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:03:54, skipping insertion in model container [2021-11-06 15:03:54,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:00:31" (2/3) ... [2021-11-06 15:03:54,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33507128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:03:54, skipping insertion in model container [2021-11-06 15:03:54,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:03:54" (3/3) ... [2021-11-06 15:03:54,645 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2021-11-06 15:03:54,650 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:03:54,650 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-06 15:03:54,724 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:03:54,728 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 15:03:54,728 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-06 15:03:54,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 18345 states, 18337 states have (on average 1.3711075966624857) internal successors, (25142), 18344 states have internal predecessors, (25142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:03:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-06 15:03:54,919 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:03:54,920 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:03:54,920 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 15:03:54,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:03:54,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2025150548, now seen corresponding path program 1 times [2021-11-06 15:03:54,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:03:54,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095970372] [2021-11-06 15:03:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:03:54,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:03:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:03:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:03:55,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:03:55,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095970372] [2021-11-06 15:03:55,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095970372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:03:55,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:03:55,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:03:55,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570375991] [2021-11-06 15:03:55,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:03:55,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:03:55,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:03:55,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:03:55,843 INFO L87 Difference]: Start difference. First operand has 18345 states, 18337 states have (on average 1.3711075966624857) internal successors, (25142), 18344 states have internal predecessors, (25142), 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 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:03:57,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:03:57,340 INFO L93 Difference]: Finished difference Result 49189 states and 67424 transitions. [2021-11-06 15:03:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:03:57,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-11-06 15:03:57,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:03:57,483 INFO L225 Difference]: With dead ends: 49189 [2021-11-06 15:03:57,484 INFO L226 Difference]: Without dead ends: 30739 [2021-11-06 15:03:57,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:03:57,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30739 states. [2021-11-06 15:03:58,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30739 to 29791. [2021-11-06 15:03:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29791 states, 29784 states have (on average 1.3668412570507655) internal successors, (40710), 29790 states have internal predecessors, (40710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:03:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29791 states to 29791 states and 40710 transitions. [2021-11-06 15:03:58,281 INFO L78 Accepts]: Start accepts. Automaton has 29791 states and 40710 transitions. Word has length 36 [2021-11-06 15:03:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:03:58,282 INFO L470 AbstractCegarLoop]: Abstraction has 29791 states and 40710 transitions. [2021-11-06 15:03:58,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:03:58,283 INFO L276 IsEmpty]: Start isEmpty. Operand 29791 states and 40710 transitions. [2021-11-06 15:03:58,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 15:03:58,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:03:58,289 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:03:58,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:03:58,290 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 15:03:58,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:03:58,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1849816215, now seen corresponding path program 1 times [2021-11-06 15:03:58,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:03:58,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623447920] [2021-11-06 15:03:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:03:58,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:03:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:03:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:03:59,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:03:59,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623447920] [2021-11-06 15:03:59,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623447920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:03:59,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:03:59,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:03:59,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361434135] [2021-11-06 15:03:59,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:03:59,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:03:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:03:59,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:03:59,174 INFO L87 Difference]: Start difference. First operand 29791 states and 40710 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:04:04,457 INFO L93 Difference]: Finished difference Result 57269 states and 78230 transitions. [2021-11-06 15:04:04,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:04:04,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 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 45 [2021-11-06 15:04:04,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:04:04,538 INFO L225 Difference]: With dead ends: 57269 [2021-11-06 15:04:04,539 INFO L226 Difference]: Without dead ends: 27508 [2021-11-06 15:04:04,590 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:04:04,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27508 states. [2021-11-06 15:04:05,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27508 to 27508. [2021-11-06 15:04:05,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27508 states, 27501 states have (on average 1.328097160103269) internal successors, (36524), 27507 states have internal predecessors, (36524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:05,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27508 states to 27508 states and 36524 transitions. [2021-11-06 15:04:05,131 INFO L78 Accepts]: Start accepts. Automaton has 27508 states and 36524 transitions. Word has length 45 [2021-11-06 15:04:05,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:04:05,132 INFO L470 AbstractCegarLoop]: Abstraction has 27508 states and 36524 transitions. [2021-11-06 15:04:05,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:05,132 INFO L276 IsEmpty]: Start isEmpty. Operand 27508 states and 36524 transitions. [2021-11-06 15:04:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 15:04:05,139 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:04:05,139 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:04:05,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:04:05,141 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 15:04:05,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:04:05,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1456789205, now seen corresponding path program 1 times [2021-11-06 15:04:05,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:04:05,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618751717] [2021-11-06 15:04:05,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:04:05,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:04:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:04:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:04:05,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:04:05,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618751717] [2021-11-06 15:04:05,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618751717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:04:05,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:04:05,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:04:05,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417647939] [2021-11-06 15:04:05,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:04:05,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:04:05,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:04:05,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:04:05,646 INFO L87 Difference]: Start difference. First operand 27508 states and 36524 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:07,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:04:07,476 INFO L93 Difference]: Finished difference Result 28920 states and 38542 transitions. [2021-11-06 15:04:07,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:04:07,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 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 45 [2021-11-06 15:04:07,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:04:07,535 INFO L225 Difference]: With dead ends: 28920 [2021-11-06 15:04:07,535 INFO L226 Difference]: Without dead ends: 28910 [2021-11-06 15:04:07,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:04:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28910 states. [2021-11-06 15:04:08,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28910 to 27498. [2021-11-06 15:04:08,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27498 states, 27496 states have (on average 1.3278658713994762) internal successors, (36511), 27497 states have internal predecessors, (36511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:08,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27498 states to 27498 states and 36511 transitions. [2021-11-06 15:04:08,190 INFO L78 Accepts]: Start accepts. Automaton has 27498 states and 36511 transitions. Word has length 45 [2021-11-06 15:04:08,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:04:08,191 INFO L470 AbstractCegarLoop]: Abstraction has 27498 states and 36511 transitions. [2021-11-06 15:04:08,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:08,191 INFO L276 IsEmpty]: Start isEmpty. Operand 27498 states and 36511 transitions. [2021-11-06 15:04:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 15:04:08,198 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:04:08,198 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:04:08,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:04:08,199 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 15:04:08,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:04:08,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1265600915, now seen corresponding path program 1 times [2021-11-06 15:04:08,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:04:08,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373604458] [2021-11-06 15:04:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:04:08,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:04:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:04:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:04:08,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:04:08,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373604458] [2021-11-06 15:04:08,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373604458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:04:08,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:04:08,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:04:08,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349894945] [2021-11-06 15:04:08,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:04:08,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:04:08,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:04:08,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:04:08,608 INFO L87 Difference]: Start difference. First operand 27498 states and 36511 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:09,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:04:09,728 INFO L93 Difference]: Finished difference Result 78748 states and 104564 transitions. [2021-11-06 15:04:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:04:09,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-06 15:04:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:04:09,821 INFO L225 Difference]: With dead ends: 78748 [2021-11-06 15:04:09,822 INFO L226 Difference]: Without dead ends: 51280 [2021-11-06 15:04:09,878 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:04:09,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51280 states. [2021-11-06 15:04:10,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51280 to 51278. [2021-11-06 15:04:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51278 states, 51276 states have (on average 1.3278336843747562) internal successors, (68086), 51277 states have internal predecessors, (68086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:11,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51278 states to 51278 states and 68086 transitions. [2021-11-06 15:04:11,090 INFO L78 Accepts]: Start accepts. Automaton has 51278 states and 68086 transitions. Word has length 57 [2021-11-06 15:04:11,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:04:11,090 INFO L470 AbstractCegarLoop]: Abstraction has 51278 states and 68086 transitions. [2021-11-06 15:04:11,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:11,091 INFO L276 IsEmpty]: Start isEmpty. Operand 51278 states and 68086 transitions. [2021-11-06 15:04:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 15:04:11,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:04:11,116 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:04:11,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:04:11,117 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 15:04:11,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:04:11,117 INFO L85 PathProgramCache]: Analyzing trace with hash 167429171, now seen corresponding path program 1 times [2021-11-06 15:04:11,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:04:11,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677743872] [2021-11-06 15:04:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:04:11,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:04:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:04:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:04:11,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:04:11,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677743872] [2021-11-06 15:04:11,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677743872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:04:11,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:04:11,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:04:11,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807965686] [2021-11-06 15:04:11,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:04:11,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:04:11,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:04:11,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:04:11,487 INFO L87 Difference]: Start difference. First operand 51278 states and 68086 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:15,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:04:15,184 INFO L93 Difference]: Finished difference Result 126330 states and 167754 transitions. [2021-11-06 15:04:15,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:04:15,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2021-11-06 15:04:15,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:04:15,329 INFO L225 Difference]: With dead ends: 126330 [2021-11-06 15:04:15,330 INFO L226 Difference]: Without dead ends: 75082 [2021-11-06 15:04:15,409 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:04:15,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75082 states. [2021-11-06 15:04:16,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75082 to 75080. [2021-11-06 15:04:16,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75080 states, 75078 states have (on average 1.3278323876501772) internal successors, (99691), 75079 states have internal predecessors, (99691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75080 states to 75080 states and 99691 transitions. [2021-11-06 15:04:17,070 INFO L78 Accepts]: Start accepts. Automaton has 75080 states and 99691 transitions. Word has length 81 [2021-11-06 15:04:17,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:04:17,071 INFO L470 AbstractCegarLoop]: Abstraction has 75080 states and 99691 transitions. [2021-11-06 15:04:17,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 75080 states and 99691 transitions. [2021-11-06 15:04:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 15:04:17,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:04:17,104 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-06 15:04:17,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:04:17,104 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 15:04:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:04:17,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1190692929, now seen corresponding path program 1 times [2021-11-06 15:04:17,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:04:17,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055331450] [2021-11-06 15:04:17,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:04:17,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:04:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:04:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:04:17,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:04:17,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055331450] [2021-11-06 15:04:17,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055331450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:04:17,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:04:17,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:04:17,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510669462] [2021-11-06 15:04:17,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:04:17,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:04:17,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:04:17,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:04:17,741 INFO L87 Difference]: Start difference. First operand 75080 states and 99691 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:22,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:04:22,343 INFO L93 Difference]: Finished difference Result 175030 states and 232436 transitions. [2021-11-06 15:04:22,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:04:22,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 89 [2021-11-06 15:04:22,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:04:22,638 INFO L225 Difference]: With dead ends: 175030 [2021-11-06 15:04:22,638 INFO L226 Difference]: Without dead ends: 99980 [2021-11-06 15:04:22,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:04:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99980 states. [2021-11-06 15:04:24,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99980 to 75084. [2021-11-06 15:04:24,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75084 states, 75082 states have (on average 1.3278149223515623) internal successors, (99695), 75083 states have internal predecessors, (99695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:24,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75084 states to 75084 states and 99695 transitions. [2021-11-06 15:04:24,818 INFO L78 Accepts]: Start accepts. Automaton has 75084 states and 99695 transitions. Word has length 89 [2021-11-06 15:04:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:04:24,819 INFO L470 AbstractCegarLoop]: Abstraction has 75084 states and 99695 transitions. [2021-11-06 15:04:24,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:04:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 75084 states and 99695 transitions. [2021-11-06 15:04:24,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 15:04:24,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:04:24,857 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-06 15:04:24,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:04:24,858 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 15:04:24,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:04:24,858 INFO L85 PathProgramCache]: Analyzing trace with hash 2036515550, now seen corresponding path program 1 times [2021-11-06 15:04:24,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:04:24,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510059228] [2021-11-06 15:04:24,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:04:24,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:04:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:04:25,574 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 15:04:25,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:04:25,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510059228] [2021-11-06 15:04:25,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510059228] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:04:25,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102594389] [2021-11-06 15:04:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:04:25,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:04:25,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:04:25,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:04:25,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process