./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--natsemi.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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--natsemi.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 2528ab0154bfd45dbc6e33de3a31029199c439afce343ebf61a330fa9c381cd3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:27:11,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:27:11,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:27:11,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:27:11,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:27:11,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:27:11,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:27:11,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:27:11,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:27:11,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:27:11,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:27:11,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:27:11,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:27:11,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:27:11,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:27:11,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:27:11,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:27:11,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:27:11,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:27:11,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:27:11,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:27:11,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:27:11,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:27:11,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:27:11,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:27:11,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:27:11,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:27:11,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:27:11,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:27:11,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:27:11,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:27:11,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:27:11,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:27:11,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:27:11,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:27:11,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:27:11,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:27:11,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:27:11,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:27:11,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:27:11,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:27:11,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:27:11,408 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:27:11,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:27:11,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:27:11,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:27:11,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:27:11,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:27:11,410 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:27:11,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:27:11,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:27:11,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:27:11,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:27:11,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:27:11,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:27:11,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:27:11,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:27:11,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:27:11,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:27:11,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:27:11,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:27:11,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:27:11,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:27:11,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:27:11,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:27:11,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:27:11,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:27:11,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:27:11,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:27:11,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:27:11,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:27:11,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2528ab0154bfd45dbc6e33de3a31029199c439afce343ebf61a330fa9c381cd3 [2021-11-06 17:27:11,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:27:11,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:27:11,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:27:11,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:27:11,597 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:27:11,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--natsemi.ko-entry_point.cil.out.i [2021-11-06 17:27:11,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0192e1b39/8c3766ae5c9e4ccebdfb1dba306c2d82/FLAGfe8697927 [2021-11-06 17:27:12,251 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:27:12,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--natsemi.ko-entry_point.cil.out.i [2021-11-06 17:27:12,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0192e1b39/8c3766ae5c9e4ccebdfb1dba306c2d82/FLAGfe8697927 [2021-11-06 17:27:12,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0192e1b39/8c3766ae5c9e4ccebdfb1dba306c2d82 [2021-11-06 17:27:12,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:27:12,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:27:12,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:27:12,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:27:12,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:27:12,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:27:12" (1/1) ... [2021-11-06 17:27:12,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49aa07af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:27:12, skipping insertion in model container [2021-11-06 17:27:12,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:27:12" (1/1) ... [2021-11-06 17:27:12,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:27:12,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:27:14,141 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--natsemi.ko-entry_point.cil.out.i[313663,313676] [2021-11-06 17:27:14,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:27:14,221 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:27:14,468 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--natsemi.ko-entry_point.cil.out.i[313663,313676] [2021-11-06 17:27:14,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:27:14,677 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:27:14,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:27:14 WrapperNode [2021-11-06 17:27:14,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:27:14,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:27:14,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:27:14,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:27:14,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:27:14" (1/1) ... [2021-11-06 17:27:14,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:27:14" (1/1) ... [2021-11-06 17:27:16,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:27:16,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:27:16,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:27:16,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:27:16,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:27:14" (1/1) ... [2021-11-06 17:27:16,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:27:14" (1/1) ... [2021-11-06 17:27:17,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:27:14" (1/1) ... [2021-11-06 17:27:17,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:27:14" (1/1) ... [2021-11-06 17:27:18,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:27:14" (1/1) ... [2021-11-06 17:27:18,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:27:14" (1/1) ... [2021-11-06 17:27:18,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:27:14" (1/1) ... [2021-11-06 17:27:18,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:27:18,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:27:18,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:27:18,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:27:18,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:27:14" (1/1) ... [2021-11-06 17:27:18,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:27:18,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:27:18,578 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 17:27:18,599 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 17:27:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-06 17:27:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:27:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:27:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:27:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:27:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:27:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:27:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:27:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:27:18,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:27:18,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:27:18,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:27:18,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:27:18,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:27:18,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:27:18,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:27:37,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:27:37,172 INFO L299 CfgBuilder]: Removed 20690 assume(true) statements. [2021-11-06 17:27:37,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:27:37 BoogieIcfgContainer [2021-11-06 17:27:37,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:27:37,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:27:37,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:27:37,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:27:37,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:27:12" (1/3) ... [2021-11-06 17:27:37,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f671e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:27:37, skipping insertion in model container [2021-11-06 17:27:37,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:27:14" (2/3) ... [2021-11-06 17:27:37,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f671e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:27:37, skipping insertion in model container [2021-11-06 17:27:37,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:27:37" (3/3) ... [2021-11-06 17:27:37,191 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--natsemi.ko-entry_point.cil.out.i [2021-11-06 17:27:37,195 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:27:37,195 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-06 17:27:37,262 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:27:37,265 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 17:27:37,266 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-06 17:27:37,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 13787 states, 13774 states have (on average 1.1911572527951213) internal successors, (16407), 13786 states have internal predecessors, (16407), 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 17:27:37,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 17:27:37,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:27:37,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:27:37,405 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:27:37,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:27:37,409 INFO L85 PathProgramCache]: Analyzing trace with hash 286204596, now seen corresponding path program 1 times [2021-11-06 17:27:37,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:27:37,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243827558] [2021-11-06 17:27:37,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:27:37,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:27:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:27:37,843 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 17:27:37,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:27:37,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243827558] [2021-11-06 17:27:37,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243827558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:27:37,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:27:37,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:27:37,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245885793] [2021-11-06 17:27:37,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:27:37,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:27:37,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:27:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:27:37,893 INFO L87 Difference]: Start difference. First operand has 13787 states, 13774 states have (on average 1.1911572527951213) internal successors, (16407), 13786 states have internal predecessors, (16407), 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 38.5) internal successors, (77), 2 states have internal predecessors, (77), 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 17:27:38,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:27:38,358 INFO L93 Difference]: Finished difference Result 27570 states and 32809 transitions. [2021-11-06 17:27:38,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:27:38,360 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2021-11-06 17:27:38,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:27:38,415 INFO L225 Difference]: With dead ends: 27570 [2021-11-06 17:27:38,416 INFO L226 Difference]: Without dead ends: 13740 [2021-11-06 17:27:38,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:27:38,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13740 states. [2021-11-06 17:27:38,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13740 to 13740. [2021-11-06 17:27:38,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13740 states, 13728 states have (on average 1.185387529137529) internal successors, (16273), 13739 states have internal predecessors, (16273), 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 17:27:38,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13740 states to 13740 states and 16273 transitions. [2021-11-06 17:27:38,796 INFO L78 Accepts]: Start accepts. Automaton has 13740 states and 16273 transitions. Word has length 77 [2021-11-06 17:27:38,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:27:38,796 INFO L470 AbstractCegarLoop]: Abstraction has 13740 states and 16273 transitions. [2021-11-06 17:27:38,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 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 17:27:38,797 INFO L276 IsEmpty]: Start isEmpty. Operand 13740 states and 16273 transitions. [2021-11-06 17:27:38,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 17:27:38,804 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:27:38,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:27:38,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:27:38,807 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:27:38,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:27:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1636768994, now seen corresponding path program 1 times [2021-11-06 17:27:38,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:27:38,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761246139] [2021-11-06 17:27:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:27:38,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:27:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:27:39,034 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 17:27:39,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:27:39,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761246139] [2021-11-06 17:27:39,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761246139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:27:39,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:27:39,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:27:39,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274062409] [2021-11-06 17:27:39,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:27:39,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:27:39,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:27:39,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:27:39,038 INFO L87 Difference]: Start difference. First operand 13740 states and 16273 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 17:27:39,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:27:39,560 INFO L93 Difference]: Finished difference Result 38774 states and 45957 transitions. [2021-11-06 17:27:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:27:39,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2021-11-06 17:27:39,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:27:39,650 INFO L225 Difference]: With dead ends: 38774 [2021-11-06 17:27:39,650 INFO L226 Difference]: Without dead ends: 25096 [2021-11-06 17:27:39,684 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 17:27:39,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25096 states. [2021-11-06 17:27:40,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25096 to 25074. [2021-11-06 17:27:40,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25074 states, 25062 states have (on average 1.1866171893703614) internal successors, (29739), 25073 states have internal predecessors, (29739), 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 17:27:40,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25074 states to 25074 states and 29739 transitions. [2021-11-06 17:27:40,422 INFO L78 Accepts]: Start accepts. Automaton has 25074 states and 29739 transitions. Word has length 77 [2021-11-06 17:27:40,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:27:40,423 INFO L470 AbstractCegarLoop]: Abstraction has 25074 states and 29739 transitions. [2021-11-06 17:27:40,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 17:27:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 25074 states and 29739 transitions. [2021-11-06 17:27:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 17:27:40,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:27:40,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:40,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:27:40,429 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:27:40,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:27:40,432 INFO L85 PathProgramCache]: Analyzing trace with hash 521949441, now seen corresponding path program 1 times [2021-11-06 17:27:40,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:27:40,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141905264] [2021-11-06 17:27:40,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:27:40,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:27:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:27:40,686 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 17:27:40,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:27:40,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141905264] [2021-11-06 17:27:40,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141905264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:27:40,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:27:40,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:27:40,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632160978] [2021-11-06 17:27:40,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:27:40,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:27:40,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:27:40,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:27:40,694 INFO L87 Difference]: Start difference. First operand 25074 states and 29739 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:27:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:27:44,439 INFO L93 Difference]: Finished difference Result 115876 states and 137471 transitions. [2021-11-06 17:27:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:27:44,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 17:27:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:27:44,659 INFO L225 Difference]: With dead ends: 115876 [2021-11-06 17:27:44,660 INFO L226 Difference]: Without dead ends: 90864 [2021-11-06 17:27:44,739 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:27:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90864 states. [2021-11-06 17:27:46,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90864 to 65426. [2021-11-06 17:27:46,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65426 states, 65414 states have (on average 1.18765096156786) internal successors, (77689), 65425 states have internal predecessors, (77689), 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 17:27:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65426 states to 65426 states and 77689 transitions. [2021-11-06 17:27:46,745 INFO L78 Accepts]: Start accepts. Automaton has 65426 states and 77689 transitions. Word has length 97 [2021-11-06 17:27:46,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:27:46,745 INFO L470 AbstractCegarLoop]: Abstraction has 65426 states and 77689 transitions. [2021-11-06 17:27:46,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:27:46,746 INFO L276 IsEmpty]: Start isEmpty. Operand 65426 states and 77689 transitions. [2021-11-06 17:27:46,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-06 17:27:46,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:27:46,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:46,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:27:46,750 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:27:46,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:27:46,751 INFO L85 PathProgramCache]: Analyzing trace with hash 799304556, now seen corresponding path program 1 times [2021-11-06 17:27:46,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:27:46,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026954131] [2021-11-06 17:27:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:27:46,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:27:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:27:46,905 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 17:27:46,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:27:46,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026954131] [2021-11-06 17:27:46,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026954131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:27:46,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:27:46,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:27:46,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992363544] [2021-11-06 17:27:46,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:27:46,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:27:46,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:27:46,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:27:46,912 INFO L87 Difference]: Start difference. First operand 65426 states and 77689 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 17:27:48,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:27:48,968 INFO L93 Difference]: Finished difference Result 169196 states and 200739 transitions. [2021-11-06 17:27:48,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:27:48,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 111 [2021-11-06 17:27:48,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:27:49,214 INFO L225 Difference]: With dead ends: 169196 [2021-11-06 17:27:49,214 INFO L226 Difference]: Without dead ends: 103832 [2021-11-06 17:27:49,310 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 17:27:49,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103832 states. [2021-11-06 17:27:51,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103832 to 94334. [2021-11-06 17:27:51,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94334 states, 94322 states have (on average 1.1882381628888277) internal successors, (112077), 94333 states have internal predecessors, (112077), 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 17:27:51,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94334 states to 94334 states and 112077 transitions. [2021-11-06 17:27:51,842 INFO L78 Accepts]: Start accepts. Automaton has 94334 states and 112077 transitions. Word has length 111 [2021-11-06 17:27:51,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:27:51,843 INFO L470 AbstractCegarLoop]: Abstraction has 94334 states and 112077 transitions. [2021-11-06 17:27:51,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 17:27:51,843 INFO L276 IsEmpty]: Start isEmpty. Operand 94334 states and 112077 transitions. [2021-11-06 17:27:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-06 17:27:51,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:27:51,846 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:27:51,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:27:51,846 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:27:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:27:51,847 INFO L85 PathProgramCache]: Analyzing trace with hash 598763004, now seen corresponding path program 1 times [2021-11-06 17:27:51,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:27:51,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386920175] [2021-11-06 17:27:51,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:27:51,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:27:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:27:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:27:52,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:27:52,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386920175] [2021-11-06 17:27:52,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386920175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:27:52,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:27:52,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:27:52,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206998026] [2021-11-06 17:27:52,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:27:52,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:27:52,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:27:52,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:27:52,049 INFO L87 Difference]: Start difference. First operand 94334 states and 112077 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 17:27:53,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:27:53,537 INFO L93 Difference]: Finished difference Result 94334 states and 112077 transitions. [2021-11-06 17:27:53,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:27:53,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 117 [2021-11-06 17:27:53,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:27:53,686 INFO L225 Difference]: With dead ends: 94334 [2021-11-06 17:27:53,686 INFO L226 Difference]: Without dead ends: 94322 [2021-11-06 17:27:53,718 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 17:27:53,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94322 states. [2021-11-06 17:27:55,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94322 to 94322. [2021-11-06 17:27:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94322 states, 94316 states have (on average 1.1877412103990839) internal successors, (112023), 94321 states have internal predecessors, (112023), 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 17:27:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94322 states to 94322 states and 112023 transitions. [2021-11-06 17:27:55,984 INFO L78 Accepts]: Start accepts. Automaton has 94322 states and 112023 transitions. Word has length 117 [2021-11-06 17:27:55,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:27:55,985 INFO L470 AbstractCegarLoop]: Abstraction has 94322 states and 112023 transitions. [2021-11-06 17:27:55,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 17:27:55,985 INFO L276 IsEmpty]: Start isEmpty. Operand 94322 states and 112023 transitions. [2021-11-06 17:27:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-06 17:27:56,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:27:56,012 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 17:27:56,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:27:56,012 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:27:56,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:27:56,013 INFO L85 PathProgramCache]: Analyzing trace with hash 561780447, now seen corresponding path program 1 times [2021-11-06 17:27:56,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:27:56,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107127641] [2021-11-06 17:27:56,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:27:56,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:27:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:27:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:27:56,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:27:56,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107127641] [2021-11-06 17:27:56,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107127641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:27:56,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:27:56,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:27:56,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102339077] [2021-11-06 17:27:56,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:27:56,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:27:56,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:27:56,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:27:56,184 INFO L87 Difference]: Start difference. First operand 94322 states and 112023 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 17:27:59,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:27:59,116 INFO L93 Difference]: Finished difference Result 237614 states and 282661 transitions. [2021-11-06 17:27:59,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:27:59,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 240 [2021-11-06 17:27:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:27:59,404 INFO L225 Difference]: With dead ends: 237614 [2021-11-06 17:27:59,404 INFO L226 Difference]: Without dead ends: 143354 [2021-11-06 17:27:59,553 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 17:27:59,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143354 states. [2021-11-06 17:28:03,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143354 to 143330. [2021-11-06 17:28:03,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143330 states, 143324 states have (on average 1.1908333565906617) internal successors, (170675), 143329 states have internal predecessors, (170675), 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 17:28:03,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143330 states to 143330 states and 170675 transitions. [2021-11-06 17:28:03,494 INFO L78 Accepts]: Start accepts. Automaton has 143330 states and 170675 transitions. Word has length 240 [2021-11-06 17:28:03,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:28:03,495 INFO L470 AbstractCegarLoop]: Abstraction has 143330 states and 170675 transitions. [2021-11-06 17:28:03,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 17:28:03,495 INFO L276 IsEmpty]: Start isEmpty. Operand 143330 states and 170675 transitions. [2021-11-06 17:28:03,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-06 17:28:03,540 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:03,540 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-06 17:28:03,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:28:03,541 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:03,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:03,541 INFO L85 PathProgramCache]: Analyzing trace with hash 172082966, now seen corresponding path program 1 times [2021-11-06 17:28:03,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:03,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022157505] [2021-11-06 17:28:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:03,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 17:28:03,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:03,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022157505] [2021-11-06 17:28:03,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022157505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:03,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:28:03,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:28:03,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763147709] [2021-11-06 17:28:03,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:28:03,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:03,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:28:03,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:28:03,748 INFO L87 Difference]: Start difference. First operand 143330 states and 170675 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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)