./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--atheros--atl1e--atl1e.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--atheros--atl1e--atl1e.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 7e5652ce767ff2e1bcbd3f583f8e33ee2c54a0e67349cc7d1c1f8d74e875d01c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:16:56,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:16:56,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:16:56,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:16:56,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:16:56,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:16:56,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:16:56,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:16:56,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:16:56,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:16:56,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:16:56,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:16:56,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:16:56,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:16:56,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:16:56,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:16:56,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:16:56,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:16:56,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:16:56,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:16:56,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:16:56,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:16:56,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:16:56,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:16:56,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:16:56,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:16:56,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:16:56,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:16:56,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:16:56,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:16:56,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:16:56,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:16:56,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:16:56,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:16:56,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:16:56,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:16:56,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:16:56,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:16:56,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:16:56,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:16:56,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:16:56,241 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:16:56,270 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:16:56,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:16:56,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:16:56,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:16:56,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:16:56,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:16:56,273 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:16:56,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:16:56,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:16:56,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:16:56,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:16:56,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:16:56,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:16:56,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:16:56,275 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:16:56,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:16:56,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:16:56,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:16:56,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:16:56,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:16:56,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:16:56,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:16:56,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:16:56,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:16:56,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:16:56,277 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:16:56,277 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:16:56,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:16:56,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:16:56,279 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e5652ce767ff2e1bcbd3f583f8e33ee2c54a0e67349cc7d1c1f8d74e875d01c [2021-11-06 17:16:56,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:16:56,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:16:56,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:16:56,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:16:56,515 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:16:56,516 INFO L432 ainManager$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--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2021-11-06 17:16:56,574 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7751604f7/cb5797f5191e41ed9fa48d1206391f68/FLAG984c53209 [2021-11-06 17:16:57,325 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:16:57,325 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--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2021-11-06 17:16:57,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7751604f7/cb5797f5191e41ed9fa48d1206391f68/FLAG984c53209 [2021-11-06 17:16:57,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7751604f7/cb5797f5191e41ed9fa48d1206391f68 [2021-11-06 17:16:57,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:16:57,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:16:57,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:16:57,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:16:57,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:16:57,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:16:57" (1/1) ... [2021-11-06 17:16:57,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f82ba6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:57, skipping insertion in model container [2021-11-06 17:16:57,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:16:57" (1/1) ... [2021-11-06 17:16:57,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:16:57,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:17:00,660 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--atheros--atl1e--atl1e.ko-entry_point.cil.out.i[418024,418037] [2021-11-06 17:17:00,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:17:00,795 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:17:01,199 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--atheros--atl1e--atl1e.ko-entry_point.cil.out.i[418024,418037] [2021-11-06 17:17:01,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:17:01,490 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:17:01,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:17:01 WrapperNode [2021-11-06 17:17:01,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:17:01,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:17:01,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:17:01,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:17:01,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:17:01" (1/1) ... [2021-11-06 17:17:01,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:17:01" (1/1) ... [2021-11-06 17:17:03,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:17:03,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:17:03,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:17:03,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:17:03,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:17:01" (1/1) ... [2021-11-06 17:17:03,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:17:01" (1/1) ... [2021-11-06 17:17:03,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:17:01" (1/1) ... [2021-11-06 17:17:03,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:17:01" (1/1) ... [2021-11-06 17:17:05,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:17:01" (1/1) ... [2021-11-06 17:17:05,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:17:01" (1/1) ... [2021-11-06 17:17:05,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:17:01" (1/1) ... [2021-11-06 17:17:05,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:17:05,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:17:05,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:17:05,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:17:05,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:17:01" (1/1) ... [2021-11-06 17:17:05,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:17:05,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:17:05,710 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 17:17:05,721 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 17:17:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:17:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:17:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:17:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:17:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:17:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:17:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 17:17:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:17:05,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:17:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:17:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:17:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:17:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:17:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:17:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:17:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:17:47,755 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:17:47,756 INFO L299 CfgBuilder]: Removed 12136 assume(true) statements. [2021-11-06 17:17:47,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:17:47 BoogieIcfgContainer [2021-11-06 17:17:47,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:17:47,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:17:47,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:17:47,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:17:47,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:16:57" (1/3) ... [2021-11-06 17:17:47,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432ff08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:17:47, skipping insertion in model container [2021-11-06 17:17:47,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:17:01" (2/3) ... [2021-11-06 17:17:47,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432ff08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:17:47, skipping insertion in model container [2021-11-06 17:17:47,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:17:47" (3/3) ... [2021-11-06 17:17:47,774 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2021-11-06 17:17:47,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:17:47,779 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 17:17:47,848 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:17:47,853 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 17:17:47,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 17:17:47,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 11244 states, 11238 states have (on average 1.3570920092543157) internal successors, (15251), 11243 states have internal predecessors, (15251), 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 17:17:48,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 17:17:48,022 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:17:48,023 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] [2021-11-06 17:17:48,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 17:17:48,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:17:48,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1290306745, now seen corresponding path program 1 times [2021-11-06 17:17:48,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:17:48,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415117432] [2021-11-06 17:17:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:17:48,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:17:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:17:48,632 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 17:17:48,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:17:48,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415117432] [2021-11-06 17:17:48,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415117432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:17:48,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:17:48,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:17:48,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063654287] [2021-11-06 17:17:48,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:17:48,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:17:48,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:17:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:17:48,683 INFO L87 Difference]: Start difference. First operand has 11244 states, 11238 states have (on average 1.3570920092543157) internal successors, (15251), 11243 states have internal predecessors, (15251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 17:17:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:17:48,994 INFO L93 Difference]: Finished difference Result 22484 states and 30497 transitions. [2021-11-06 17:17:48,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:17:48,996 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 68 [2021-11-06 17:17:48,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:17:49,062 INFO L225 Difference]: With dead ends: 22484 [2021-11-06 17:17:49,062 INFO L226 Difference]: Without dead ends: 11141 [2021-11-06 17:17:49,093 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 17:17:49,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11141 states. [2021-11-06 17:17:49,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11141 to 11141. [2021-11-06 17:17:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11141 states, 11136 states have (on average 1.349048132183908) internal successors, (15023), 11140 states have internal predecessors, (15023), 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 17:17:49,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11141 states to 11141 states and 15023 transitions. [2021-11-06 17:17:49,455 INFO L78 Accepts]: Start accepts. Automaton has 11141 states and 15023 transitions. Word has length 68 [2021-11-06 17:17:49,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:17:49,456 INFO L470 AbstractCegarLoop]: Abstraction has 11141 states and 15023 transitions. [2021-11-06 17:17:49,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 17:17:49,457 INFO L276 IsEmpty]: Start isEmpty. Operand 11141 states and 15023 transitions. [2021-11-06 17:17:49,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 17:17:49,466 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:17:49,467 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] [2021-11-06 17:17:49,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:17:49,467 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 17:17:49,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:17:49,470 INFO L85 PathProgramCache]: Analyzing trace with hash 689905999, now seen corresponding path program 1 times [2021-11-06 17:17:49,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:17:49,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213562479] [2021-11-06 17:17:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:17:49,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:17:49,627 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 17:17:49,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505467029] [2021-11-06 17:17:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:17:49,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:17:49,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:17:49,635 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 17:17:49,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 17:17:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:17:51,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 17:17:51,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:17:51,330 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 17:17:51,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:17:51,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213562479] [2021-11-06 17:17:51,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 17:17:51,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505467029] [2021-11-06 17:17:51,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505467029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:17:51,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:17:51,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:17:51,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345220406] [2021-11-06 17:17:51,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:17:51,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:17:51,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:17:51,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:17:51,334 INFO L87 Difference]: Start difference. First operand 11141 states and 15023 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 17:17:52,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:17:52,401 INFO L93 Difference]: Finished difference Result 30197 states and 40795 transitions. [2021-11-06 17:17:52,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:17:52,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-06 17:17:52,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:17:52,477 INFO L225 Difference]: With dead ends: 30197 [2021-11-06 17:17:52,478 INFO L226 Difference]: Without dead ends: 19096 [2021-11-06 17:17:52,504 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 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 17:17:52,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19096 states. [2021-11-06 17:17:52,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19096 to 18574. [2021-11-06 17:17:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18574 states, 18569 states have (on average 1.3484301793311433) internal successors, (25039), 18573 states have internal predecessors, (25039), 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 17:17:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18574 states to 18574 states and 25039 transitions. [2021-11-06 17:17:52,976 INFO L78 Accepts]: Start accepts. Automaton has 18574 states and 25039 transitions. Word has length 68 [2021-11-06 17:17:52,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:17:52,977 INFO L470 AbstractCegarLoop]: Abstraction has 18574 states and 25039 transitions. [2021-11-06 17:17:52,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 17:17:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 18574 states and 25039 transitions. [2021-11-06 17:17:52,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 17:17:52,989 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:17:52,989 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] [2021-11-06 17:17:53,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 17:17:53,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:17:53,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 17:17:53,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:17:53,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1735445701, now seen corresponding path program 1 times [2021-11-06 17:17:53,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:17:53,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039023182] [2021-11-06 17:17:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:17:53,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:17:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:17:53,534 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 17:17:53,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:17:53,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039023182] [2021-11-06 17:17:53,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039023182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:17:53,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:17:53,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:17:53,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137414183] [2021-11-06 17:17:53,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:17:53,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:17:53,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:17:53,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:17:53,540 INFO L87 Difference]: Start difference. First operand 18574 states and 25039 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 17:17:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:17:54,390 INFO L93 Difference]: Finished difference Result 53246 states and 71823 transitions. [2021-11-06 17:17:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:17:54,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2021-11-06 17:17:54,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:17:54,480 INFO L225 Difference]: With dead ends: 53246 [2021-11-06 17:17:54,481 INFO L226 Difference]: Without dead ends: 34712 [2021-11-06 17:17:54,526 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 17:17:54,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34712 states. [2021-11-06 17:17:55,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34712 to 34706. [2021-11-06 17:17:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34706 states, 34701 states have (on average 1.3493847439555056) internal successors, (46825), 34705 states have internal predecessors, (46825), 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 17:17:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34706 states to 34706 states and 46825 transitions. [2021-11-06 17:17:55,534 INFO L78 Accepts]: Start accepts. Automaton has 34706 states and 46825 transitions. Word has length 86 [2021-11-06 17:17:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:17:55,535 INFO L470 AbstractCegarLoop]: Abstraction has 34706 states and 46825 transitions. [2021-11-06 17:17:55,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 17:17:55,536 INFO L276 IsEmpty]: Start isEmpty. Operand 34706 states and 46825 transitions. [2021-11-06 17:17:55,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-06 17:17:55,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:17:55,562 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-06 17:17:55,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:17:55,563 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 17:17:55,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:17:55,564 INFO L85 PathProgramCache]: Analyzing trace with hash 330730959, now seen corresponding path program 1 times [2021-11-06 17:17:55,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:17:55,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704816442] [2021-11-06 17:17:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:17:55,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:17:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:17:55,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 17:17:55,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:17:55,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704816442] [2021-11-06 17:17:55,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704816442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:17:55,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:17:55,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:17:55,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735736924] [2021-11-06 17:17:55,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:17:55,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:17:55,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:17:55,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:17:55,985 INFO L87 Difference]: Start difference. First operand 34706 states and 46825 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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 17:17:57,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:17:57,220 INFO L93 Difference]: Finished difference Result 66410 states and 89540 transitions. [2021-11-06 17:17:57,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:17:57,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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 128 [2021-11-06 17:17:57,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:17:57,409 INFO L225 Difference]: With dead ends: 66410 [2021-11-06 17:17:57,409 INFO L226 Difference]: Without dead ends: 66400 [2021-11-06 17:17:57,446 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 17:17:57,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66400 states. [2021-11-06 17:17:58,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66400 to 65936. [2021-11-06 17:17:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65936 states, 65931 states have (on average 1.348970893813229) internal successors, (88939), 65935 states have internal predecessors, (88939), 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 17:17:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65936 states to 65936 states and 88939 transitions. [2021-11-06 17:17:58,982 INFO L78 Accepts]: Start accepts. Automaton has 65936 states and 88939 transitions. Word has length 128 [2021-11-06 17:17:58,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:17:58,983 INFO L470 AbstractCegarLoop]: Abstraction has 65936 states and 88939 transitions. [2021-11-06 17:17:58,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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 17:17:58,983 INFO L276 IsEmpty]: Start isEmpty. Operand 65936 states and 88939 transitions. [2021-11-06 17:17:59,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-06 17:17:59,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:17:59,048 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 17:17:59,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:17:59,048 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 17:17:59,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:17:59,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1900925868, now seen corresponding path program 1 times [2021-11-06 17:17:59,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:17:59,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959974947] [2021-11-06 17:17:59,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:17:59,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:17:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:17:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-06 17:17:59,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:17:59,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959974947] [2021-11-06 17:17:59,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959974947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:17:59,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:17:59,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:17:59,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915716940] [2021-11-06 17:17:59,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:17:59,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:17:59,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:17:59,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:17:59,559 INFO L87 Difference]: Start difference. First operand 65936 states and 88939 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 17:18:01,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:18:01,649 INFO L93 Difference]: Finished difference Result 174676 states and 235533 transitions. [2021-11-06 17:18:01,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:18:01,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 219 [2021-11-06 17:18:01,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:18:01,998 INFO L225 Difference]: With dead ends: 174676 [2021-11-06 17:18:01,998 INFO L226 Difference]: Without dead ends: 108780 [2021-11-06 17:18:02,106 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 17:18:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108780 states. [2021-11-06 17:18:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108780 to 108762. [2021-11-06 17:18:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108762 states, 108757 states have (on average 1.348133913219379) internal successors, (146619), 108761 states have internal predecessors, (146619), 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 17:18:04,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108762 states to 108762 states and 146619 transitions. [2021-11-06 17:18:04,801 INFO L78 Accepts]: Start accepts. Automaton has 108762 states and 146619 transitions. Word has length 219 [2021-11-06 17:18:04,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:18:04,803 INFO L470 AbstractCegarLoop]: Abstraction has 108762 states and 146619 transitions. [2021-11-06 17:18:04,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 17:18:04,803 INFO L276 IsEmpty]: Start isEmpty. Operand 108762 states and 146619 transitions. [2021-11-06 17:18:04,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-06 17:18:04,886 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:18:04,887 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-11-06 17:18:04,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:18:04,887 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 17:18:04,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:18:04,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1357564224, now seen corresponding path program 1 times [2021-11-06 17:18:04,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:18:04,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721379626] [2021-11-06 17:18:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:18:04,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:18:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:18:05,496 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-06 17:18:05,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:18:05,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721379626] [2021-11-06 17:18:05,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721379626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:18:05,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:18:05,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:18:05,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960662810] [2021-11-06 17:18:05,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:18:05,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:18:05,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:18:05,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:18:05,500 INFO L87 Difference]: Start difference. First operand 108762 states and 146619 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 17:18:07,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:18:07,971 INFO L93 Difference]: Finished difference Result 217484 states and 293192 transitions. [2021-11-06 17:18:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:18:07,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 242 [2021-11-06 17:18:07,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:18:08,208 INFO L225 Difference]: With dead ends: 217484 [2021-11-06 17:18:08,209 INFO L226 Difference]: Without dead ends: 108762 [2021-11-06 17:18:08,364 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 17:18:08,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108762 states. [2021-11-06 17:18:10,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108762 to 108722. [2021-11-06 17:18:10,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108722 states, 108717 states have (on average 1.3481884157951378) internal successors, (146571), 108721 states have internal predecessors, (146571), 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 17:18:11,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108722 states to 108722 states and 146571 transitions. [2021-11-06 17:18:11,221 INFO L78 Accepts]: Start accepts. Automaton has 108722 states and 146571 transitions. Word has length 242 [2021-11-06 17:18:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:18:11,222 INFO L470 AbstractCegarLoop]: Abstraction has 108722 states and 146571 transitions. [2021-11-06 17:18:11,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 17:18:11,222 INFO L276 IsEmpty]: Start isEmpty. Operand 108722 states and 146571 transitions. [2021-11-06 17:18:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-06 17:18:11,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:18:11,301 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-11-06 17:18:11,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:18:11,301 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 17:18:11,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:18:11,302 INFO L85 PathProgramCache]: Analyzing trace with hash 405878168, now seen corresponding path program 1 times [2021-11-06 17:18:11,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:18:11,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968216122] [2021-11-06 17:18:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:18:11,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:18:11,602 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 17:18:11,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46450718] [2021-11-06 17:18:11,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:18:11,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:18:11,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:18:11,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 17:18:11,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 17:18:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:18:13,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 5269 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 17:18:13,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:18:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-06 17:18:13,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:18:13,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968216122] [2021-11-06 17:18:13,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 17:18:13,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46450718] [2021-11-06 17:18:13,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46450718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:18:13,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:18:13,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:18:13,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930854430] [2021-11-06 17:18:13,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:18:13,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:18:13,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:18:13,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:18:13,778 INFO L87 Difference]: Start difference. First operand 108722 states and 146571 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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 17:18:18,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:18:18,410 INFO L93 Difference]: Finished difference Result 323814 states and 437065 transitions. [2021-11-06 17:18:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:18:18,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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 261 [2021-11-06 17:18:18,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:18:19,116 INFO L225 Difference]: With dead ends: 323814 [2021-11-06 17:18:19,116 INFO L226 Difference]: Without dead ends: 215132 [2021-11-06 17:18:19,285 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 259 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 17:18:19,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215132 states.