./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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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--isdn--hardware--mISDN--w6692.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 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 15:34:32,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 15:34:32,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 15:34:32,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 15:34:32,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 15:34:32,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 15:34:32,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 15:34:32,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 15:34:32,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 15:34:32,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 15:34:32,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 15:34:32,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 15:34:32,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 15:34:32,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 15:34:32,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 15:34:32,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 15:34:32,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 15:34:32,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 15:34:32,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 15:34:32,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 15:34:32,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 15:34:32,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 15:34:32,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 15:34:32,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 15:34:32,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 15:34:32,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 15:34:32,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 15:34:32,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 15:34:32,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 15:34:32,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 15:34:32,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 15:34:32,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 15:34:32,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 15:34:32,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 15:34:32,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 15:34:32,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 15:34:32,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 15:34:32,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 15:34:32,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 15:34:32,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 15:34:32,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 15:34:32,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 15:34:32,500 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 15:34:32,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 15:34:32,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 15:34:32,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 15:34:32,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 15:34:32,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 15:34:32,502 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 15:34:32,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 15:34:32,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 15:34:32,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 15:34:32,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 15:34:32,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 15:34:32,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 15:34:32,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 15:34:32,504 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 15:34:32,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 15:34:32,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 15:34:32,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 15:34:32,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 15:34:32,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:34:32,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 15:34:32,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 15:34:32,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 15:34:32,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 15:34:32,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 15:34:32,506 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 15:34:32,506 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 15:34:32,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 15:34:32,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 15:34:32,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e [2021-11-07 15:34:32,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 15:34:32,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 15:34:32,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 15:34:32,714 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 15:34:32,715 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 15:34:32,716 INFO L432 ainManager$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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2021-11-07 15:34:32,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62df884a/f1527f59e2f44e909a39a6f8d476a07b/FLAG5fc31a76c [2021-11-07 15:34:33,356 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 15:34:33,357 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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2021-11-07 15:34:33,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62df884a/f1527f59e2f44e909a39a6f8d476a07b/FLAG5fc31a76c [2021-11-07 15:34:33,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62df884a/f1527f59e2f44e909a39a6f8d476a07b [2021-11-07 15:34:33,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 15:34:33,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 15:34:33,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 15:34:33,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 15:34:33,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 15:34:33,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:34:33" (1/1) ... [2021-11-07 15:34:33,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c762894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:33, skipping insertion in model container [2021-11-07 15:34:33,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:34:33" (1/1) ... [2021-11-07 15:34:33,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 15:34:33,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 15:34:34,995 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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2021-11-07 15:34:35,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:34:35,062 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 15:34:35,275 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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2021-11-07 15:34:35,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:34:35,326 INFO L208 MainTranslator]: Completed translation [2021-11-07 15:34:35,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:35 WrapperNode [2021-11-07 15:34:35,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 15:34:35,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 15:34:35,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 15:34:35,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 15:34:35,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:35" (1/1) ... [2021-11-07 15:34:35,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:35" (1/1) ... [2021-11-07 15:34:36,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 15:34:36,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 15:34:36,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 15:34:36,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 15:34:36,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:35" (1/1) ... [2021-11-07 15:34:36,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:35" (1/1) ... [2021-11-07 15:34:36,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:35" (1/1) ... [2021-11-07 15:34:36,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:35" (1/1) ... [2021-11-07 15:34:36,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:35" (1/1) ... [2021-11-07 15:34:37,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:35" (1/1) ... [2021-11-07 15:34:37,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:35" (1/1) ... [2021-11-07 15:34:37,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 15:34:37,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 15:34:37,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 15:34:37,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 15:34:37,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:35" (1/1) ... [2021-11-07 15:34:37,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:34:37,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:34:37,259 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) [2021-11-07 15:34:37,263 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 [2021-11-07 15:34:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 15:34:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 15:34:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 15:34:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 15:34:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 15:34:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 15:34:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 15:34:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 15:34:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 15:34:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 15:34:37,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 15:35:34,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 15:35:34,248 INFO L299 CfgBuilder]: Removed 4694 assume(true) statements. [2021-11-07 15:35:34,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:35:34 BoogieIcfgContainer [2021-11-07 15:35:34,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 15:35:34,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 15:35:34,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 15:35:34,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 15:35:34,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:34:33" (1/3) ... [2021-11-07 15:35:34,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0ffdf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:35:34, skipping insertion in model container [2021-11-07 15:35:34,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:35" (2/3) ... [2021-11-07 15:35:34,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0ffdf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:35:34, skipping insertion in model container [2021-11-07 15:35:34,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:35:34" (3/3) ... [2021-11-07 15:35:34,261 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2021-11-07 15:35:34,265 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 15:35:34,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-07 15:35:34,310 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 15:35:34,315 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 [2021-11-07 15:35:34,315 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-07 15:35:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 4341 states, 4331 states have (on average 1.3876702839990764) internal successors, (6010), 4340 states have internal predecessors, (6010), 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) [2021-11-07 15:35:34,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 15:35:34,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:35:34,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:35:34,381 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:35:34,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:35:34,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1080722524, now seen corresponding path program 1 times [2021-11-07 15:35:34,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:35:34,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690279843] [2021-11-07 15:35:34,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:35:34,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:35:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:35:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:35:34,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:35:34,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690279843] [2021-11-07 15:35:34,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690279843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:35:34,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:35:34,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:35:34,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269857839] [2021-11-07 15:35:34,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:35:34,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 15:35:34,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:35:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 15:35:35,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:35:35,009 INFO L87 Difference]: Start difference. First operand has 4341 states, 4331 states have (on average 1.3876702839990764) internal successors, (6010), 4340 states have internal predecessors, (6010), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-11-07 15:35:35,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:35:35,202 INFO L93 Difference]: Finished difference Result 8678 states and 12015 transitions. [2021-11-07 15:35:35,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 15:35:35,204 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2021-11-07 15:35:35,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:35:35,230 INFO L225 Difference]: With dead ends: 8678 [2021-11-07 15:35:35,231 INFO L226 Difference]: Without dead ends: 4326 [2021-11-07 15:35:35,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:35:35,249 INFO L933 BasicCegarLoop]: 5986 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5986 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 15:35:35,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5986 Invalid, 0 Unknown, 0 Unchecked, 11.18ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 15:35:35,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-11-07 15:35:35,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 4326. [2021-11-07 15:35:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4317 states have (on average 1.3808200138985407) internal successors, (5961), 4325 states have internal predecessors, (5961), 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) [2021-11-07 15:35:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 5961 transitions. [2021-11-07 15:35:35,387 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 5961 transitions. Word has length 22 [2021-11-07 15:35:35,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:35:35,388 INFO L470 AbstractCegarLoop]: Abstraction has 4326 states and 5961 transitions. [2021-11-07 15:35:35,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-11-07 15:35:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 5961 transitions. [2021-11-07 15:35:35,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 15:35:35,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:35:35,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:35:35,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 15:35:35,390 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:35:35,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:35:35,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1187020318, now seen corresponding path program 1 times [2021-11-07 15:35:35,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:35:35,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084746649] [2021-11-07 15:35:35,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:35:35,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:35:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:35:35,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:35:35,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:35:35,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084746649] [2021-11-07 15:35:35,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084746649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:35:35,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:35:35,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:35:35,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90517390] [2021-11-07 15:35:35,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:35:35,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:35:35,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:35:35,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:35:35,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:35:35,650 INFO L87 Difference]: Start difference. First operand 4326 states and 5961 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-07 15:35:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:35:36,039 INFO L93 Difference]: Finished difference Result 12528 states and 17341 transitions. [2021-11-07 15:35:36,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:35:36,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2021-11-07 15:35:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:35:36,064 INFO L225 Difference]: With dead ends: 12528 [2021-11-07 15:35:36,064 INFO L226 Difference]: Without dead ends: 8217 [2021-11-07 15:35:36,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:35:36,076 INFO L933 BasicCegarLoop]: 5960 mSDtfsCounter, 5443 mSDsluCounter, 5934 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 203.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5443 SdHoareTripleChecker+Valid, 11894 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.59ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 236.92ms IncrementalHoareTripleChecker+Time [2021-11-07 15:35:36,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5443 Valid, 11894 Invalid, 14 Unknown, 0 Unchecked, 19.59ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 236.92ms Time] [2021-11-07 15:35:36,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8217 states. [2021-11-07 15:35:36,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8217 to 8200. [2021-11-07 15:35:36,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8200 states, 8191 states have (on average 1.3899401782444145) internal successors, (11385), 8199 states have internal predecessors, (11385), 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) [2021-11-07 15:35:36,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 11385 transitions. [2021-11-07 15:35:36,247 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 11385 transitions. Word has length 22 [2021-11-07 15:35:36,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:35:36,249 INFO L470 AbstractCegarLoop]: Abstraction has 8200 states and 11385 transitions. [2021-11-07 15:35:36,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-07 15:35:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 11385 transitions. [2021-11-07 15:35:36,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 15:35:36,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:35:36,256 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:35:36,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 15:35:36,257 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:35:36,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:35:36,258 INFO L85 PathProgramCache]: Analyzing trace with hash 567191233, now seen corresponding path program 1 times [2021-11-07 15:35:36,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:35:36,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121039419] [2021-11-07 15:35:36,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:35:36,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:35:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:35:36,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:35:36,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:35:36,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121039419] [2021-11-07 15:35:36,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121039419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:35:36,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:35:36,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:35:36,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143404848] [2021-11-07 15:35:36,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:35:36,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:35:36,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:35:36,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:35:36,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:35:36,497 INFO L87 Difference]: Start difference. First operand 8200 states and 11385 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-07 15:35:38,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:35:39,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:35:39,013 INFO L93 Difference]: Finished difference Result 16386 states and 22756 transitions. [2021-11-07 15:35:39,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:35:39,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-11-07 15:35:39,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:35:39,042 INFO L225 Difference]: With dead ends: 16386 [2021-11-07 15:35:39,043 INFO L226 Difference]: Without dead ends: 8200 [2021-11-07 15:35:39,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:35:39,057 INFO L933 BasicCegarLoop]: 5961 mSDtfsCounter, 0 mSDsluCounter, 5956 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2270.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11917 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2376.89ms IncrementalHoareTripleChecker+Time [2021-11-07 15:35:39,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11917 Invalid, 4 Unknown, 0 Unchecked, 8.66ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2376.89ms Time] [2021-11-07 15:35:39,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8200 states. [2021-11-07 15:35:39,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8200 to 8200. [2021-11-07 15:35:39,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8200 states, 8191 states have (on average 1.389818093028934) internal successors, (11384), 8199 states have internal predecessors, (11384), 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) [2021-11-07 15:35:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 11384 transitions. [2021-11-07 15:35:39,239 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 11384 transitions. Word has length 40 [2021-11-07 15:35:39,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:35:39,240 INFO L470 AbstractCegarLoop]: Abstraction has 8200 states and 11384 transitions. [2021-11-07 15:35:39,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-07 15:35:39,242 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 11384 transitions. [2021-11-07 15:35:39,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 15:35:39,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:35:39,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:35:39,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 15:35:39,244 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:35:39,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:35:39,245 INFO L85 PathProgramCache]: Analyzing trace with hash -93621830, now seen corresponding path program 1 times [2021-11-07 15:35:39,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:35:39,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236789284] [2021-11-07 15:35:39,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:35:39,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:35:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:35:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:35:39,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:35:39,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236789284] [2021-11-07 15:35:39,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236789284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:35:39,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:35:39,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:35:39,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135003663] [2021-11-07 15:35:39,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:35:39,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:35:39,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:35:39,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:35:39,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:35:39,526 INFO L87 Difference]: Start difference. First operand 8200 states and 11384 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-11-07 15:35:40,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:35:40,313 INFO L93 Difference]: Finished difference Result 23706 states and 32782 transitions. [2021-11-07 15:35:40,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:35:40,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-11-07 15:35:40,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:35:40,358 INFO L225 Difference]: With dead ends: 23706 [2021-11-07 15:35:40,359 INFO L226 Difference]: Without dead ends: 15521 [2021-11-07 15:35:40,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 101.31ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:35:40,375 INFO L933 BasicCegarLoop]: 7083 mSDtfsCounter, 5204 mSDsluCounter, 12074 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 457.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5204 SdHoareTripleChecker+Valid, 19157 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.13ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 502.38ms IncrementalHoareTripleChecker+Time [2021-11-07 15:35:40,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5204 Valid, 19157 Invalid, 82 Unknown, 0 Unchecked, 25.13ms Time], IncrementalHoareTripleChecker [15 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 502.38ms Time] [2021-11-07 15:35:40,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15521 states. [2021-11-07 15:35:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15521 to 8710. [2021-11-07 15:35:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8710 states, 8701 states have (on average 1.3828295598207103) internal successors, (12032), 8709 states have internal predecessors, (12032), 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) [2021-11-07 15:35:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8710 states to 8710 states and 12032 transitions. [2021-11-07 15:35:40,594 INFO L78 Accepts]: Start accepts. Automaton has 8710 states and 12032 transitions. Word has length 41 [2021-11-07 15:35:40,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:35:40,595 INFO L470 AbstractCegarLoop]: Abstraction has 8710 states and 12032 transitions. [2021-11-07 15:35:40,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-11-07 15:35:40,596 INFO L276 IsEmpty]: Start isEmpty. Operand 8710 states and 12032 transitions. [2021-11-07 15:35:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 15:35:40,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:35:40,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:35:40,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 15:35:40,597 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:35:40,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:35:40,598 INFO L85 PathProgramCache]: Analyzing trace with hash -893390283, now seen corresponding path program 1 times [2021-11-07 15:35:40,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:35:40,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830697566] [2021-11-07 15:35:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:35:40,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:35:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:35:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:35:40,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:35:40,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830697566] [2021-11-07 15:35:40,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830697566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:35:40,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:35:40,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:35:40,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375465096] [2021-11-07 15:35:40,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:35:40,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:35:40,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:35:40,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:35:40,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:35:40,836 INFO L87 Difference]: Start difference. First operand 8710 states and 12032 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 15:35:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:35:41,470 INFO L93 Difference]: Finished difference Result 26254 states and 36022 transitions. [2021-11-07 15:35:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:35:41,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-07 15:35:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:35:41,504 INFO L225 Difference]: With dead ends: 26254 [2021-11-07 15:35:41,504 INFO L226 Difference]: Without dead ends: 17559 [2021-11-07 15:35:41,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 98.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:35:41,519 INFO L933 BasicCegarLoop]: 6520 mSDtfsCounter, 5772 mSDsluCounter, 11860 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 336.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5772 SdHoareTripleChecker+Valid, 18380 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.35ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 354.61ms IncrementalHoareTripleChecker+Time [2021-11-07 15:35:41,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5772 Valid, 18380 Invalid, 74 Unknown, 0 Unchecked, 16.35ms Time], IncrementalHoareTripleChecker [19 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 354.61ms Time] [2021-11-07 15:35:41,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17559 states. [2021-11-07 15:35:41,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17559 to 15477. [2021-11-07 15:35:41,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15477 states, 15468 states have (on average 1.3808507887251098) internal successors, (21359), 15476 states have internal predecessors, (21359), 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) [2021-11-07 15:35:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15477 states to 15477 states and 21359 transitions. [2021-11-07 15:35:41,798 INFO L78 Accepts]: Start accepts. Automaton has 15477 states and 21359 transitions. Word has length 42 [2021-11-07 15:35:41,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:35:41,799 INFO L470 AbstractCegarLoop]: Abstraction has 15477 states and 21359 transitions. [2021-11-07 15:35:41,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 15:35:41,800 INFO L276 IsEmpty]: Start isEmpty. Operand 15477 states and 21359 transitions. [2021-11-07 15:35:41,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 15:35:41,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:35:41,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:35:41,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 15:35:41,802 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:35:41,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:35:41,802 INFO L85 PathProgramCache]: Analyzing trace with hash 83594758, now seen corresponding path program 1 times [2021-11-07 15:35:41,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:35:41,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283805340] [2021-11-07 15:35:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:35:41,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:35:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:35:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:35:42,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:35:42,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283805340] [2021-11-07 15:35:42,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283805340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:35:42,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:35:42,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:35:42,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288388554] [2021-11-07 15:35:42,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:35:42,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:35:42,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:35:42,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:35:42,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:35:42,149 INFO L87 Difference]: Start difference. First operand 15477 states and 21359 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-07 15:35:42,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:35:42,923 INFO L93 Difference]: Finished difference Result 46703 states and 63941 transitions. [2021-11-07 15:35:42,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:35:42,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-07 15:35:42,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:35:43,006 INFO L225 Difference]: With dead ends: 46703 [2021-11-07 15:35:43,007 INFO L226 Difference]: Without dead ends: 31241 [2021-11-07 15:35:43,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 102.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:35:43,040 INFO L933 BasicCegarLoop]: 6517 mSDtfsCounter, 5780 mSDsluCounter, 11860 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 342.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5780 SdHoareTripleChecker+Valid, 18377 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.16ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 360.45ms IncrementalHoareTripleChecker+Time [2021-11-07 15:35:43,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5780 Valid, 18377 Invalid, 74 Unknown, 0 Unchecked, 13.16ms Time], IncrementalHoareTripleChecker [19 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 360.45ms Time] [2021-11-07 15:35:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31241 states. [2021-11-07 15:35:43,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31241 to 27104. [2021-11-07 15:35:43,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27104 states, 27095 states have (on average 1.3780771360029527) internal successors, (37339), 27103 states have internal predecessors, (37339), 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) [2021-11-07 15:35:43,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27104 states to 27104 states and 37339 transitions. [2021-11-07 15:35:43,572 INFO L78 Accepts]: Start accepts. Automaton has 27104 states and 37339 transitions. Word has length 43 [2021-11-07 15:35:43,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:35:43,572 INFO L470 AbstractCegarLoop]: Abstraction has 27104 states and 37339 transitions. [2021-11-07 15:35:43,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-07 15:35:43,572 INFO L276 IsEmpty]: Start isEmpty. Operand 27104 states and 37339 transitions. [2021-11-07 15:35:43,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 15:35:43,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:35:43,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:35:43,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 15:35:43,573 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:35:43,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:35:43,574 INFO L85 PathProgramCache]: Analyzing trace with hash 307210307, now seen corresponding path program 1 times [2021-11-07 15:35:43,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:35:43,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022564525] [2021-11-07 15:35:43,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:35:43,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:35:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:35:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:35:43,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:35:43,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022564525] [2021-11-07 15:35:43,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022564525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:35:43,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:35:43,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:35:43,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530471964] [2021-11-07 15:35:43,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:35:43,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:35:43,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:35:43,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:35:43,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:35:43,810 INFO L87 Difference]: Start difference. First operand 27104 states and 37339 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-07 15:35:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:35:44,949 INFO L93 Difference]: Finished difference Result 81872 states and 111737 transitions. [2021-11-07 15:35:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:35:44,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-11-07 15:35:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:35:45,059 INFO L225 Difference]: With dead ends: 81872 [2021-11-07 15:35:45,059 INFO L226 Difference]: Without dead ends: 54783 [2021-11-07 15:35:45,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.80ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:35:45,117 INFO L933 BasicCegarLoop]: 6514 mSDtfsCounter, 5788 mSDsluCounter, 11860 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 331.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5788 SdHoareTripleChecker+Valid, 18374 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.89ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 348.79ms IncrementalHoareTripleChecker+Time [2021-11-07 15:35:45,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5788 Valid, 18374 Invalid, 74 Unknown, 0 Unchecked, 12.89ms Time], IncrementalHoareTripleChecker [19 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 348.79ms Time] [2021-11-07 15:35:45,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54783 states. [2021-11-07 15:35:46,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54783 to 46543. [2021-11-07 15:35:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46543 states, 46534 states have (on average 1.3742424893626166) internal successors, (63949), 46542 states have internal predecessors, (63949), 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) [2021-11-07 15:35:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46543 states to 46543 states and 63949 transitions. [2021-11-07 15:35:46,152 INFO L78 Accepts]: Start accepts. Automaton has 46543 states and 63949 transitions. Word has length 44 [2021-11-07 15:35:46,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:35:46,153 INFO L470 AbstractCegarLoop]: Abstraction has 46543 states and 63949 transitions. [2021-11-07 15:35:46,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-07 15:35:46,153 INFO L276 IsEmpty]: Start isEmpty. Operand 46543 states and 63949 transitions. [2021-11-07 15:35:46,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 15:35:46,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:35:46,155 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:35:46,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 15:35:46,155 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:35:46,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:35:46,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1998294810, now seen corresponding path program 1 times [2021-11-07 15:35:46,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:35:46,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822398083] [2021-11-07 15:35:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:35:46,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:35:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:35:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 15:35:46,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:35:46,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822398083] [2021-11-07 15:35:46,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822398083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:35:46,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:35:46,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:35:46,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676161029] [2021-11-07 15:35:46,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:35:46,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:35:46,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:35:46,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:35:46,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:35:46,425 INFO L87 Difference]: Start difference. First operand 46543 states and 63949 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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) [2021-11-07 15:35:47,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:35:47,334 INFO L93 Difference]: Finished difference Result 46543 states and 63949 transitions. [2021-11-07 15:35:47,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:35:47,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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 44 [2021-11-07 15:35:47,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:35:47,409 INFO L225 Difference]: With dead ends: 46543 [2021-11-07 15:35:47,409 INFO L226 Difference]: Without dead ends: 46541 [2021-11-07 15:35:47,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:35:47,423 INFO L933 BasicCegarLoop]: 5957 mSDtfsCounter, 321 mSDsluCounter, 5562 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 163.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 11519 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.03ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 176.48ms IncrementalHoareTripleChecker+Time [2021-11-07 15:35:47,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 11519 Invalid, 35 Unknown, 0 Unchecked, 6.03ms Time], IncrementalHoareTripleChecker [11 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 176.48ms Time] [2021-11-07 15:35:47,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46541 states. [2021-11-07 15:35:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46541 to 46541. [2021-11-07 15:35:48,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46541 states, 46533 states have (on average 1.373906689876002) internal successors, (63932), 46540 states have internal predecessors, (63932), 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) [2021-11-07 15:35:48,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46541 states to 46541 states and 63932 transitions. [2021-11-07 15:35:48,273 INFO L78 Accepts]: Start accepts. Automaton has 46541 states and 63932 transitions. Word has length 44 [2021-11-07 15:35:48,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:35:48,273 INFO L470 AbstractCegarLoop]: Abstraction has 46541 states and 63932 transitions. [2021-11-07 15:35:48,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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) [2021-11-07 15:35:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand 46541 states and 63932 transitions. [2021-11-07 15:35:48,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 15:35:48,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:35:48,274 INFO L514 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] [2021-11-07 15:35:48,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 15:35:48,275 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:35:48,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:35:48,277 INFO L85 PathProgramCache]: Analyzing trace with hash 750563296, now seen corresponding path program 1 times [2021-11-07 15:35:48,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:35:48,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143749022] [2021-11-07 15:35:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:35:48,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:35:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:35:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 15:35:48,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:35:48,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143749022] [2021-11-07 15:35:48,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143749022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:35:48,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:35:48,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 15:35:48,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045786600] [2021-11-07 15:35:48,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:35:48,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:35:48,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:35:48,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:35:48,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:35:48,649 INFO L87 Difference]: Start difference. First operand 46541 states and 63932 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-07 15:35:50,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:35:50,898 INFO L93 Difference]: Finished difference Result 128501 states and 175688 transitions. [2021-11-07 15:35:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 15:35:50,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 49 [2021-11-07 15:35:50,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:35:51,054 INFO L225 Difference]: With dead ends: 128501 [2021-11-07 15:35:51,055 INFO L226 Difference]: Without dead ends: 81975 [2021-11-07 15:35:51,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 268.19ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 15:35:51,124 INFO L933 BasicCegarLoop]: 10551 mSDtfsCounter, 6882 mSDsluCounter, 26391 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 716.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6882 SdHoareTripleChecker+Valid, 36942 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.53ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 752.67ms IncrementalHoareTripleChecker+Time [2021-11-07 15:35:51,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6882 Valid, 36942 Invalid, 159 Unknown, 0 Unchecked, 20.53ms Time], IncrementalHoareTripleChecker [36 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 752.67ms Time] [2021-11-07 15:35:51,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81975 states. [2021-11-07 15:35:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81975 to 46621. [2021-11-07 15:35:52,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46621 states, 46613 states have (on average 1.3732649690000645) internal successors, (64012), 46620 states have internal predecessors, (64012), 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) [2021-11-07 15:35:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46621 states to 46621 states and 64012 transitions. [2021-11-07 15:35:52,352 INFO L78 Accepts]: Start accepts. Automaton has 46621 states and 64012 transitions. Word has length 49 [2021-11-07 15:35:52,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:35:52,352 INFO L470 AbstractCegarLoop]: Abstraction has 46621 states and 64012 transitions. [2021-11-07 15:35:52,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-07 15:35:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand 46621 states and 64012 transitions. [2021-11-07 15:35:52,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-07 15:35:52,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:35:52,354 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 15:35:52,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 15:35:52,355 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:35:52,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:35:52,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1159627793, now seen corresponding path program 1 times [2021-11-07 15:35:52,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:35:52,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354877622] [2021-11-07 15:35:52,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:35:52,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:35:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:35:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 15:35:52,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:35:52,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354877622] [2021-11-07 15:35:52,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354877622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:35:52,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:35:52,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:35:52,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743351244] [2021-11-07 15:35:52,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:35:52,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:35:52,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:35:52,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:35:52,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:35:52,871 INFO L87 Difference]: Start difference. First operand 46621 states and 64012 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-11-07 15:35:53,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:35:53,949 INFO L93 Difference]: Finished difference Result 93323 states and 128121 transitions. [2021-11-07 15:35:53,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:35:53,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 120 [2021-11-07 15:35:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:35:54,025 INFO L225 Difference]: With dead ends: 93323 [2021-11-07 15:35:54,025 INFO L226 Difference]: Without dead ends: 46717 [2021-11-07 15:35:54,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:35:54,075 INFO L933 BasicCegarLoop]: 5953 mSDtfsCounter, 5 mSDsluCounter, 5950 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11903 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175.93ms IncrementalHoareTripleChecker+Time [2021-11-07 15:35:54,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 11903 Invalid, 12 Unknown, 0 Unchecked, 5.88ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 175.93ms Time] [2021-11-07 15:35:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46717 states. [2021-11-07 15:35:55,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46717 to 46637. [2021-11-07 15:35:55,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46637 states, 46629 states have (on average 1.3731368890604558) internal successors, (64028), 46636 states have internal predecessors, (64028), 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) [2021-11-07 15:35:55,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46637 states to 46637 states and 64028 transitions. [2021-11-07 15:35:55,124 INFO L78 Accepts]: Start accepts. Automaton has 46637 states and 64028 transitions. Word has length 120 [2021-11-07 15:35:55,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:35:55,125 INFO L470 AbstractCegarLoop]: Abstraction has 46637 states and 64028 transitions. [2021-11-07 15:35:55,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-11-07 15:35:55,125 INFO L276 IsEmpty]: Start isEmpty. Operand 46637 states and 64028 transitions. [2021-11-07 15:35:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-07 15:35:55,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:35:55,127 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 15:35:55,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 15:35:55,128 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:35:55,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:35:55,128 INFO L85 PathProgramCache]: Analyzing trace with hash 160933319, now seen corresponding path program 1 times [2021-11-07 15:35:55,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:35:55,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282115103] [2021-11-07 15:35:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:35:55,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:35:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:35:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 15:35:55,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:35:55,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282115103] [2021-11-07 15:35:55,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282115103] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:35:55,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873734985] [2021-11-07 15:35:55,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:35:55,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:35:55,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:35:55,473 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) [2021-11-07 15:35:55,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 15:35:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:35:56,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 4244 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 15:35:56,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:35:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 15:35:57,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 15:35:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 15:35:57,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873734985] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 15:35:57,988 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 15:35:57,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-07 15:35:57,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116229418] [2021-11-07 15:35:57,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 15:35:57,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:35:57,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:35:57,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:35:57,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:35:57,989 INFO L87 Difference]: Start difference. First operand 46637 states and 64028 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2021-11-07 15:35:59,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:35:59,303 INFO L93 Difference]: Finished difference Result 93355 states and 128153 transitions. [2021-11-07 15:35:59,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 15:35:59,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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 126 [2021-11-07 15:35:59,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:35:59,394 INFO L225 Difference]: With dead ends: 93355 [2021-11-07 15:35:59,394 INFO L226 Difference]: Without dead ends: 46733 [2021-11-07 15:35:59,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.97ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:35:59,441 INFO L933 BasicCegarLoop]: 5953 mSDtfsCounter, 10 mSDsluCounter, 5951 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 269.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11904 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.32ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 295.67ms IncrementalHoareTripleChecker+Time [2021-11-07 15:35:59,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 11904 Invalid, 20 Unknown, 0 Unchecked, 6.32ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 295.67ms Time] [2021-11-07 15:35:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46733 states. [2021-11-07 15:36:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46733 to 46733. [2021-11-07 15:36:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46733 states, 46725 states have (on average 1.3723702514713751) internal successors, (64124), 46732 states have internal predecessors, (64124), 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) [2021-11-07 15:36:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46733 states to 46733 states and 64124 transitions. [2021-11-07 15:36:00,547 INFO L78 Accepts]: Start accepts. Automaton has 46733 states and 64124 transitions. Word has length 126 [2021-11-07 15:36:00,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:36:00,547 INFO L470 AbstractCegarLoop]: Abstraction has 46733 states and 64124 transitions. [2021-11-07 15:36:00,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2021-11-07 15:36:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 46733 states and 64124 transitions. [2021-11-07 15:36:00,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 15:36:00,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:36:00,550 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 15:36:00,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 15:36:00,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 15:36:00,751 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:36:00,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:36:00,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2039287199, now seen corresponding path program 2 times [2021-11-07 15:36:00,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:36:00,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693812373] [2021-11-07 15:36:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:36:00,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:36:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:36:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 15:36:01,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:36:01,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693812373] [2021-11-07 15:36:01,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693812373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:36:01,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:36:01,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 15:36:01,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717521614] [2021-11-07 15:36:01,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:36:01,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:36:01,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:36:01,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:36:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:36:01,277 INFO L87 Difference]: Start difference. First operand 46733 states and 64124 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2021-11-07 15:36:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:36:03,148 INFO L93 Difference]: Finished difference Result 136523 states and 187961 transitions. [2021-11-07 15:36:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 15:36:03,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 132 [2021-11-07 15:36:03,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:36:03,308 INFO L225 Difference]: With dead ends: 136523 [2021-11-07 15:36:03,308 INFO L226 Difference]: Without dead ends: 89805 [2021-11-07 15:36:03,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 109.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:36:03,362 INFO L933 BasicCegarLoop]: 11600 mSDtfsCounter, 11300 mSDsluCounter, 11913 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11300 SdHoareTripleChecker+Valid, 23513 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 143.98ms IncrementalHoareTripleChecker+Time [2021-11-07 15:36:03,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11300 Valid, 23513 Invalid, 22 Unknown, 0 Unchecked, 19.02ms Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 143.98ms Time] [2021-11-07 15:36:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89805 states. [2021-11-07 15:36:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89805 to 46765. [2021-11-07 15:36:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46765 states, 46757 states have (on average 1.372115405179973) internal successors, (64156), 46764 states have internal predecessors, (64156), 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) [2021-11-07 15:36:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46765 states to 46765 states and 64156 transitions. [2021-11-07 15:36:04,807 INFO L78 Accepts]: Start accepts. Automaton has 46765 states and 64156 transitions. Word has length 132 [2021-11-07 15:36:04,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:36:04,808 INFO L470 AbstractCegarLoop]: Abstraction has 46765 states and 64156 transitions. [2021-11-07 15:36:04,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2021-11-07 15:36:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand 46765 states and 64156 transitions. [2021-11-07 15:36:04,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-07 15:36:04,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:36:04,810 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 15:36:04,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 15:36:04,810 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:36:04,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:36:04,811 INFO L85 PathProgramCache]: Analyzing trace with hash 66372555, now seen corresponding path program 1 times [2021-11-07 15:36:04,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:36:04,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616918352] [2021-11-07 15:36:04,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:36:04,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:36:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:36:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 15:36:05,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:36:05,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616918352] [2021-11-07 15:36:05,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616918352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:36:05,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:36:05,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 15:36:05,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995095951] [2021-11-07 15:36:05,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:36:05,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:36:05,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:36:05,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:36:05,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:36:05,342 INFO L87 Difference]: Start difference. First operand 46765 states and 64156 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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) [2021-11-07 15:36:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:36:08,756 INFO L93 Difference]: Finished difference Result 182595 states and 251325 transitions. [2021-11-07 15:36:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 15:36:08,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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 155 [2021-11-07 15:36:08,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:36:09,039 INFO L225 Difference]: With dead ends: 182595 [2021-11-07 15:36:09,040 INFO L226 Difference]: Without dead ends: 135845 [2021-11-07 15:36:09,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 215.35ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:36:09,121 INFO L933 BasicCegarLoop]: 6521 mSDtfsCounter, 23498 mSDsluCounter, 29094 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23498 SdHoareTripleChecker+Valid, 35615 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.16ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.46ms IncrementalHoareTripleChecker+Time [2021-11-07 15:36:09,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23498 Valid, 35615 Invalid, 18 Unknown, 0 Unchecked, 31.16ms Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 103.46ms Time] [2021-11-07 15:36:09,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135845 states. [2021-11-07 15:36:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135845 to 46789. [2021-11-07 15:36:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46789 states, 46781 states have (on average 1.371924499262521) internal successors, (64180), 46788 states have internal predecessors, (64180), 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) [2021-11-07 15:36:11,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46789 states to 46789 states and 64180 transitions. [2021-11-07 15:36:11,324 INFO L78 Accepts]: Start accepts. Automaton has 46789 states and 64180 transitions. Word has length 155 [2021-11-07 15:36:11,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:36:11,325 INFO L470 AbstractCegarLoop]: Abstraction has 46789 states and 64180 transitions. [2021-11-07 15:36:11,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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) [2021-11-07 15:36:11,325 INFO L276 IsEmpty]: Start isEmpty. Operand 46789 states and 64180 transitions. [2021-11-07 15:36:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-07 15:36:11,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:36:11,327 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 15:36:11,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 15:36:11,327 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 15:36:11,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:36:11,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1746790569, now seen corresponding path program 1 times [2021-11-07 15:36:11,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:36:11,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779834006] [2021-11-07 15:36:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:36:11,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:36:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:36:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 15:36:11,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:36:11,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779834006] [2021-11-07 15:36:11,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779834006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:36:11,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:36:11,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 15:36:11,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447526993] [2021-11-07 15:36:11,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:36:11,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:36:11,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:36:11,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:36:11,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:36:11,661 INFO L87 Difference]: Start difference. First operand 46789 states and 64180 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2021-11-07 15:36:15,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:36:15,701 INFO L93 Difference]: Finished difference Result 183803 states and 252729 transitions. [2021-11-07 15:36:15,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 15:36:15,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-07 15:36:15,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:36:16,105 INFO L225 Difference]: With dead ends: 183803 [2021-11-07 15:36:16,105 INFO L226 Difference]: Without dead ends: 137029 [2021-11-07 15:36:16,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.05ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:36:16,178 INFO L933 BasicCegarLoop]: 12024 mSDtfsCounter, 11633 mSDsluCounter, 17937 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11633 SdHoareTripleChecker+Valid, 29961 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.83ms IncrementalHoareTripleChecker+Time [2021-11-07 15:36:16,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11633 Valid, 29961 Invalid, 11 Unknown, 0 Unchecked, 24.16ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 64.83ms Time] [2021-11-07 15:36:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137029 states.