./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--usb--class--cdc-acm.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--usb--class--cdc-acm.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 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:19:20,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:19:20,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:19:20,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:19:20,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:19:20,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:19:20,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:19:20,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:19:20,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:19:20,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:19:20,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:19:20,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:19:20,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:19:20,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:19:20,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:19:20,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:19:20,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:19:20,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:19:20,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:19:20,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:19:20,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:19:20,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:19:20,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:19:20,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:19:20,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:19:20,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:19:20,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:19:20,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:19:20,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:19:20,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:19:20,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:19:20,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:19:20,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:19:20,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:19:20,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:19:20,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:19:20,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:19:20,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:19:20,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:19:20,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:19:20,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:19:20,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:19:20,379 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:19:20,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:19:20,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:19:20,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:19:20,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:19:20,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:19:20,383 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:19:20,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:19:20,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:19:20,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:19:20,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:19:20,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:19:20,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:19:20,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:19:20,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:19:20,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:19:20,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:19:20,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:19:20,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:19:20,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:19:20,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:19:20,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:19:20,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:19:20,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:19:20,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:19:20,386 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:19:20,386 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:19:20,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:19:20,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:19:20,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 [2021-11-07 16:19:20,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:19:20,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:19:20,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:19:20,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:19:20,636 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:19:20,637 INFO L432 ainManager$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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-07 16:19:20,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8a49de83/2a0fcf40d8fe48deae28b2e0f6338a5a/FLAG75f9e31e0 [2021-11-07 16:19:21,355 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:19:21,356 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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-07 16:19:21,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8a49de83/2a0fcf40d8fe48deae28b2e0f6338a5a/FLAG75f9e31e0 [2021-11-07 16:19:21,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8a49de83/2a0fcf40d8fe48deae28b2e0f6338a5a [2021-11-07 16:19:21,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:19:21,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:19:21,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:19:21,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:19:21,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:19:21,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:19:21" (1/1) ... [2021-11-07 16:19:21,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36dbc0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:21, skipping insertion in model container [2021-11-07 16:19:21,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:19:21" (1/1) ... [2021-11-07 16:19:21,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:19:21,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:19:22,994 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2021-11-07 16:19:23,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:19:23,087 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:19:23,324 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2021-11-07 16:19:23,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:19:23,455 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:19:23,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:23 WrapperNode [2021-11-07 16:19:23,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:19:23,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:19:23,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:19:23,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:19:23,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:23" (1/1) ... [2021-11-07 16:19:23,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:23" (1/1) ... [2021-11-07 16:19:23,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:19:23,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:19:23,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:19:23,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:19:23,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:23" (1/1) ... [2021-11-07 16:19:23,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:23" (1/1) ... [2021-11-07 16:19:23,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:23" (1/1) ... [2021-11-07 16:19:23,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:23" (1/1) ... [2021-11-07 16:19:24,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:23" (1/1) ... [2021-11-07 16:19:24,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:23" (1/1) ... [2021-11-07 16:19:24,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:23" (1/1) ... [2021-11-07 16:19:24,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:19:24,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:19:24,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:19:24,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:19:24,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:23" (1/1) ... [2021-11-07 16:19:24,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:19:24,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:19:24,405 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 16:19:24,459 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 16:19:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-07 16:19:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 16:19:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:19:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:19:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:19:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 16:19:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:19:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:19:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:19:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:19:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:19:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:19:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:19:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:19:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:19:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 16:19:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:19:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:19:24,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:19:55,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:19:55,210 INFO L299 CfgBuilder]: Removed 1993 assume(true) statements. [2021-11-07 16:19:55,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:19:55 BoogieIcfgContainer [2021-11-07 16:19:55,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:19:55,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:19:55,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:19:55,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:19:55,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:19:21" (1/3) ... [2021-11-07 16:19:55,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@853ab44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:19:55, skipping insertion in model container [2021-11-07 16:19:55,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:19:23" (2/3) ... [2021-11-07 16:19:55,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@853ab44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:19:55, skipping insertion in model container [2021-11-07 16:19:55,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:19:55" (3/3) ... [2021-11-07 16:19:55,219 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-07 16:19:55,222 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:19:55,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-07 16:19:55,290 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:19:55,300 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 16:19:55,300 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-07 16:19:55,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 2026 states, 2006 states have (on average 1.4087736789631107) internal successors, (2826), 2025 states have internal predecessors, (2826), 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 16:19:55,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 16:19:55,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:19:55,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:19:55,347 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:19:55,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:19:55,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1062845019, now seen corresponding path program 1 times [2021-11-07 16:19:55,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:19:55,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615959223] [2021-11-07 16:19:55,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:19:55,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:19:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:19:56,043 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 16:19:56,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:19:56,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615959223] [2021-11-07 16:19:56,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615959223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:19:56,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:19:56,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:19:56,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265397151] [2021-11-07 16:19:56,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:19:56,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 16:19:56,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:19:56,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 16:19:56,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:19:56,068 INFO L87 Difference]: Start difference. First operand has 2026 states, 2006 states have (on average 1.4087736789631107) internal successors, (2826), 2025 states have internal predecessors, (2826), 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 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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 16:19:56,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:19:56,152 INFO L93 Difference]: Finished difference Result 4048 states and 5647 transitions. [2021-11-07 16:19:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 16:19:56,154 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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 103 [2021-11-07 16:19:56,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:19:56,171 INFO L225 Difference]: With dead ends: 4048 [2021-11-07 16:19:56,171 INFO L226 Difference]: Without dead ends: 2009 [2021-11-07 16:19:56,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:19:56,182 INFO L933 BasicCegarLoop]: 2740 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, 2740 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:19:56,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2740 Invalid, 0 Unknown, 0 Unchecked, 8.19ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 16:19:56,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2021-11-07 16:19:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 2009. [2021-11-07 16:19:56,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1990 states have (on average 1.3633165829145728) internal successors, (2713), 2008 states have internal predecessors, (2713), 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 16:19:56,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2713 transitions. [2021-11-07 16:19:56,264 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2713 transitions. Word has length 103 [2021-11-07 16:19:56,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:19:56,264 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 2713 transitions. [2021-11-07 16:19:56,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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 16:19:56,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2713 transitions. [2021-11-07 16:19:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 16:19:56,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:19:56,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:19:56,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:19:56,268 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:19:56,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:19:56,269 INFO L85 PathProgramCache]: Analyzing trace with hash 666457411, now seen corresponding path program 1 times [2021-11-07 16:19:56,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:19:56,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624310233] [2021-11-07 16:19:56,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:19:56,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:19:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:19:56,816 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 16:19:56,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:19:56,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624310233] [2021-11-07 16:19:56,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624310233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:19:56,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:19:56,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:19:56,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181856734] [2021-11-07 16:19:56,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:19:56,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:19:56,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:19:56,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:19:56,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:19:56,819 INFO L87 Difference]: Start difference. First operand 2009 states and 2713 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 16:19:57,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:19:57,134 INFO L93 Difference]: Finished difference Result 5095 states and 6983 transitions. [2021-11-07 16:19:57,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:19:57,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-11-07 16:19:57,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:19:57,146 INFO L225 Difference]: With dead ends: 5095 [2021-11-07 16:19:57,146 INFO L226 Difference]: Without dead ends: 3170 [2021-11-07 16:19:57,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:19:57,151 INFO L933 BasicCegarLoop]: 2712 mSDtfsCounter, 1733 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 214.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.82ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 245.96ms IncrementalHoareTripleChecker+Time [2021-11-07 16:19:57,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1733 Valid, 5312 Invalid, 23 Unknown, 0 Unchecked, 8.82ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 245.96ms Time] [2021-11-07 16:19:57,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2021-11-07 16:19:57,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3159. [2021-11-07 16:19:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 3140 states have (on average 1.3869426751592357) internal successors, (4355), 3158 states have internal predecessors, (4355), 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 16:19:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 4355 transitions. [2021-11-07 16:19:57,209 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 4355 transitions. Word has length 103 [2021-11-07 16:19:57,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:19:57,213 INFO L470 AbstractCegarLoop]: Abstraction has 3159 states and 4355 transitions. [2021-11-07 16:19:57,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 16:19:57,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 4355 transitions. [2021-11-07 16:19:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 16:19:57,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:19:57,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:19:57,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:19:57,216 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:19:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:19:57,220 INFO L85 PathProgramCache]: Analyzing trace with hash -211769177, now seen corresponding path program 1 times [2021-11-07 16:19:57,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:19:57,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110876848] [2021-11-07 16:19:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:19:57,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:19:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:19:57,688 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 16:19:57,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:19:57,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110876848] [2021-11-07 16:19:57,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110876848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:19:57,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:19:57,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:19:57,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369762505] [2021-11-07 16:19:57,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:19:57,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:19:57,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:19:57,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:19:57,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:19:57,695 INFO L87 Difference]: Start difference. First operand 3159 states and 4355 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 16:19:58,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:19:58,014 INFO L93 Difference]: Finished difference Result 8855 states and 12269 transitions. [2021-11-07 16:19:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:19:58,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 104 [2021-11-07 16:19:58,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:19:58,034 INFO L225 Difference]: With dead ends: 8855 [2021-11-07 16:19:58,034 INFO L226 Difference]: Without dead ends: 5780 [2021-11-07 16:19:58,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:19:58,045 INFO L933 BasicCegarLoop]: 2712 mSDtfsCounter, 2395 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 191.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.80ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 225.77ms IncrementalHoareTripleChecker+Time [2021-11-07 16:19:58,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2395 Valid, 5312 Invalid, 23 Unknown, 0 Unchecked, 7.80ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 225.77ms Time] [2021-11-07 16:19:58,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2021-11-07 16:19:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 5720. [2021-11-07 16:19:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 5701 states have (on average 1.3960708647605684) internal successors, (7959), 5719 states have internal predecessors, (7959), 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 16:19:58,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 7959 transitions. [2021-11-07 16:19:58,140 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 7959 transitions. Word has length 104 [2021-11-07 16:19:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:19:58,142 INFO L470 AbstractCegarLoop]: Abstraction has 5720 states and 7959 transitions. [2021-11-07 16:19:58,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 16:19:58,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 7959 transitions. [2021-11-07 16:19:58,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 16:19:58,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:19:58,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:19:58,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:19:58,144 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:19:58,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:19:58,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1985592461, now seen corresponding path program 1 times [2021-11-07 16:19:58,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:19:58,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775101934] [2021-11-07 16:19:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:19:58,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:19:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:19:58,511 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 16:19:58,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:19:58,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775101934] [2021-11-07 16:19:58,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775101934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:19:58,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:19:58,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:19:58,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124472232] [2021-11-07 16:19:58,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:19:58,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:19:58,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:19:58,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:19:58,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:19:58,513 INFO L87 Difference]: Start difference. First operand 5720 states and 7959 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 16:19:59,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:19:59,274 INFO L93 Difference]: Finished difference Result 13638 states and 18852 transitions. [2021-11-07 16:19:59,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:19:59,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-11-07 16:19:59,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:19:59,297 INFO L225 Difference]: With dead ends: 13638 [2021-11-07 16:19:59,297 INFO L226 Difference]: Without dead ends: 8002 [2021-11-07 16:19:59,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:19:59,307 INFO L933 BasicCegarLoop]: 3015 mSDtfsCounter, 1481 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 486.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 5552 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.91ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 539.41ms IncrementalHoareTripleChecker+Time [2021-11-07 16:19:59,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 5552 Invalid, 86 Unknown, 0 Unchecked, 7.91ms Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 539.41ms Time] [2021-11-07 16:19:59,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2021-11-07 16:19:59,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 7970. [2021-11-07 16:19:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7970 states, 7951 states have (on average 1.3790718148660546) internal successors, (10965), 7969 states have internal predecessors, (10965), 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 16:19:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7970 states to 7970 states and 10965 transitions. [2021-11-07 16:19:59,472 INFO L78 Accepts]: Start accepts. Automaton has 7970 states and 10965 transitions. Word has length 108 [2021-11-07 16:19:59,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:19:59,473 INFO L470 AbstractCegarLoop]: Abstraction has 7970 states and 10965 transitions. [2021-11-07 16:19:59,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 16:19:59,473 INFO L276 IsEmpty]: Start isEmpty. Operand 7970 states and 10965 transitions. [2021-11-07 16:19:59,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 16:19:59,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:19:59,476 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:19:59,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:19:59,476 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:19:59,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:19:59,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1132510402, now seen corresponding path program 1 times [2021-11-07 16:19:59,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:19:59,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307025482] [2021-11-07 16:19:59,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:19:59,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:19:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:19:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:19:59,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:19:59,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307025482] [2021-11-07 16:19:59,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307025482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:19:59,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:19:59,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:19:59,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885023099] [2021-11-07 16:19:59,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:19:59,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:19:59,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:19:59,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:19:59,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:19:59,873 INFO L87 Difference]: Start difference. First operand 7970 states and 10965 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 16:20:00,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:20:00,291 INFO L93 Difference]: Finished difference Result 23528 states and 32456 transitions. [2021-11-07 16:20:00,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:20:00,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 137 [2021-11-07 16:20:00,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:20:00,340 INFO L225 Difference]: With dead ends: 23528 [2021-11-07 16:20:00,341 INFO L226 Difference]: Without dead ends: 15642 [2021-11-07 16:20:00,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:20:00,356 INFO L933 BasicCegarLoop]: 4332 mSDtfsCounter, 6257 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6257 SdHoareTripleChecker+Valid, 7037 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.54ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.41ms IncrementalHoareTripleChecker+Time [2021-11-07 16:20:00,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6257 Valid, 7037 Invalid, 15 Unknown, 0 Unchecked, 11.54ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 141.41ms Time] [2021-11-07 16:20:00,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15642 states. [2021-11-07 16:20:00,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15642 to 7814. [2021-11-07 16:20:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7814 states, 7795 states have (on average 1.38216805644644) internal successors, (10774), 7813 states have internal predecessors, (10774), 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 16:20:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 10774 transitions. [2021-11-07 16:20:00,583 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 10774 transitions. Word has length 137 [2021-11-07 16:20:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:20:00,583 INFO L470 AbstractCegarLoop]: Abstraction has 7814 states and 10774 transitions. [2021-11-07 16:20:00,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 16:20:00,584 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 10774 transitions. [2021-11-07 16:20:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 16:20:00,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:20:00,587 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 16:20:00,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:20:00,587 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:20:00,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:20:00,588 INFO L85 PathProgramCache]: Analyzing trace with hash 93089651, now seen corresponding path program 1 times [2021-11-07 16:20:00,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:20:00,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026072187] [2021-11-07 16:20:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:20:00,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:20:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:20:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:20:00,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:20:00,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026072187] [2021-11-07 16:20:00,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026072187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:20:00,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:20:00,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:20:00,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007711649] [2021-11-07 16:20:00,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:20:00,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:20:00,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:20:00,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:20:00,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:20:00,951 INFO L87 Difference]: Start difference. First operand 7814 states and 10774 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 16:20:03,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:20:03,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:20:03,538 INFO L93 Difference]: Finished difference Result 15548 states and 21460 transitions. [2021-11-07 16:20:03,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:20:03,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 139 [2021-11-07 16:20:03,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:20:03,552 INFO L225 Difference]: With dead ends: 15548 [2021-11-07 16:20:03,552 INFO L226 Difference]: Without dead ends: 7814 [2021-11-07 16:20:03,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:20:03,563 INFO L933 BasicCegarLoop]: 2711 mSDtfsCounter, 1 mSDsluCounter, 5414 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2127.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8125 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2262.25ms IncrementalHoareTripleChecker+Time [2021-11-07 16:20:03,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 8125 Invalid, 10 Unknown, 0 Unchecked, 6.62ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2262.25ms Time] [2021-11-07 16:20:03,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7814 states. [2021-11-07 16:20:03,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7814 to 7814. [2021-11-07 16:20:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7814 states, 7795 states have (on average 1.3819114817190508) internal successors, (10772), 7813 states have internal predecessors, (10772), 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 16:20:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 10772 transitions. [2021-11-07 16:20:03,712 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 10772 transitions. Word has length 139 [2021-11-07 16:20:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:20:03,712 INFO L470 AbstractCegarLoop]: Abstraction has 7814 states and 10772 transitions. [2021-11-07 16:20:03,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 16:20:03,712 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 10772 transitions. [2021-11-07 16:20:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-07 16:20:03,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:20:03,715 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 16:20:03,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 16:20:03,715 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:20:03,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:20:03,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1429478067, now seen corresponding path program 1 times [2021-11-07 16:20:03,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:20:03,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745693197] [2021-11-07 16:20:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:20:03,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:20:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:20:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:20:04,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:20:04,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745693197] [2021-11-07 16:20:04,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745693197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:20:04,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:20:04,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:20:04,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067951494] [2021-11-07 16:20:04,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:20:04,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:20:04,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:20:04,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:20:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:20:04,152 INFO L87 Difference]: Start difference. First operand 7814 states and 10772 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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 16:20:04,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:20:04,481 INFO L93 Difference]: Finished difference Result 7814 states and 10772 transitions. [2021-11-07 16:20:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:20:04,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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 143 [2021-11-07 16:20:04,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:20:04,496 INFO L225 Difference]: With dead ends: 7814 [2021-11-07 16:20:04,496 INFO L226 Difference]: Without dead ends: 7790 [2021-11-07 16:20:04,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:20:04,499 INFO L933 BasicCegarLoop]: 2675 mSDtfsCounter, 2342 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 196.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 220.51ms IncrementalHoareTripleChecker+Time [2021-11-07 16:20:04,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2342 Valid, 2834 Invalid, 74 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [32 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 220.51ms Time] [2021-11-07 16:20:04,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7790 states. [2021-11-07 16:20:04,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7790 to 7790. [2021-11-07 16:20:04,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7790 states, 7783 states have (on average 1.3763330335346267) internal successors, (10712), 7789 states have internal predecessors, (10712), 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 16:20:04,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7790 states to 7790 states and 10712 transitions. [2021-11-07 16:20:04,639 INFO L78 Accepts]: Start accepts. Automaton has 7790 states and 10712 transitions. Word has length 143 [2021-11-07 16:20:04,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:20:04,640 INFO L470 AbstractCegarLoop]: Abstraction has 7790 states and 10712 transitions. [2021-11-07 16:20:04,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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 16:20:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 7790 states and 10712 transitions. [2021-11-07 16:20:04,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 16:20:04,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:20:04,643 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 16:20:04,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 16:20:04,644 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:20:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:20:04,645 INFO L85 PathProgramCache]: Analyzing trace with hash 975428840, now seen corresponding path program 1 times [2021-11-07 16:20:04,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:20:04,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113144248] [2021-11-07 16:20:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:20:04,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:20:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:20:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:20:04,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:20:04,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113144248] [2021-11-07 16:20:04,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113144248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:20:04,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:20:04,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:20:04,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715150273] [2021-11-07 16:20:04,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:20:04,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:20:04,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:20:04,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:20:04,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:20:04,993 INFO L87 Difference]: Start difference. First operand 7790 states and 10712 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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 16:20:07,083 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:20:07,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:20:07,970 INFO L93 Difference]: Finished difference Result 17882 states and 24605 transitions. [2021-11-07 16:20:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:20:07,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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 148 [2021-11-07 16:20:07,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:20:07,995 INFO L225 Difference]: With dead ends: 17882 [2021-11-07 16:20:07,995 INFO L226 Difference]: Without dead ends: 10176 [2021-11-07 16:20:08,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:20:08,007 INFO L933 BasicCegarLoop]: 2788 mSDtfsCounter, 1954 mSDsluCounter, 2062 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2507.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 4850 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.86ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2698.04ms IncrementalHoareTripleChecker+Time [2021-11-07 16:20:08,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 4850 Invalid, 140 Unknown, 0 Unchecked, 6.86ms Time], IncrementalHoareTripleChecker [53 Valid, 86 Invalid, 1 Unknown, 0 Unchecked, 2698.04ms Time] [2021-11-07 16:20:08,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10176 states. [2021-11-07 16:20:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10176 to 10112. [2021-11-07 16:20:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10112 states, 10105 states have (on average 1.3664522513607125) internal successors, (13808), 10111 states have internal predecessors, (13808), 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 16:20:08,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10112 states to 10112 states and 13808 transitions. [2021-11-07 16:20:08,205 INFO L78 Accepts]: Start accepts. Automaton has 10112 states and 13808 transitions. Word has length 148 [2021-11-07 16:20:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:20:08,206 INFO L470 AbstractCegarLoop]: Abstraction has 10112 states and 13808 transitions. [2021-11-07 16:20:08,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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 16:20:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 10112 states and 13808 transitions. [2021-11-07 16:20:08,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-07 16:20:08,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:20:08,209 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:08,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 16:20:08,209 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:20:08,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:20:08,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1236843536, now seen corresponding path program 1 times [2021-11-07 16:20:08,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:20:08,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240673414] [2021-11-07 16:20:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:20:08,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:20:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:20:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:20:08,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:20:08,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240673414] [2021-11-07 16:20:08,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240673414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:20:08,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:20:08,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:20:08,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62759547] [2021-11-07 16:20:08,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:20:08,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:20:08,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:20:08,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:20:08,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:20:08,541 INFO L87 Difference]: Start difference. First operand 10112 states and 13808 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 16:20:10,632 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:20:11,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:20:11,145 INFO L93 Difference]: Finished difference Result 23042 states and 31702 transitions. [2021-11-07 16:20:11,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:20:11,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 149 [2021-11-07 16:20:11,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:20:11,169 INFO L225 Difference]: With dead ends: 23042 [2021-11-07 16:20:11,169 INFO L226 Difference]: Without dead ends: 13014 [2021-11-07 16:20:11,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:20:11,183 INFO L933 BasicCegarLoop]: 4317 mSDtfsCounter, 2187 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2213.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 6418 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.01ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2399.87ms IncrementalHoareTripleChecker+Time [2021-11-07 16:20:11,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2187 Valid, 6418 Invalid, 35 Unknown, 0 Unchecked, 22.01ms Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2399.87ms Time] [2021-11-07 16:20:11,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13014 states. [2021-11-07 16:20:11,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13014 to 13011. [2021-11-07 16:20:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13011 states, 13004 states have (on average 1.379729314057213) internal successors, (17942), 13010 states have internal predecessors, (17942), 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 16:20:11,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13011 states to 13011 states and 17942 transitions. [2021-11-07 16:20:11,515 INFO L78 Accepts]: Start accepts. Automaton has 13011 states and 17942 transitions. Word has length 149 [2021-11-07 16:20:11,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:20:11,516 INFO L470 AbstractCegarLoop]: Abstraction has 13011 states and 17942 transitions. [2021-11-07 16:20:11,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 16:20:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 13011 states and 17942 transitions. [2021-11-07 16:20:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-07 16:20:11,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:20:11,521 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:11,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 16:20:11,521 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:20:11,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:20:11,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1569447921, now seen corresponding path program 1 times [2021-11-07 16:20:11,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:20:11,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505162206] [2021-11-07 16:20:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:20:11,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:20:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:20:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:20:11,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:20:11,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505162206] [2021-11-07 16:20:11,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505162206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:20:11,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:20:11,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:20:11,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125278526] [2021-11-07 16:20:11,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:20:11,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:20:11,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:20:11,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:20:11,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:20:11,857 INFO L87 Difference]: Start difference. First operand 13011 states and 17942 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 16:20:13,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:20:14,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:20:14,774 INFO L93 Difference]: Finished difference Result 31435 states and 43274 transitions. [2021-11-07 16:20:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:20:14,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 159 [2021-11-07 16:20:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:20:14,811 INFO L225 Difference]: With dead ends: 31435 [2021-11-07 16:20:14,811 INFO L226 Difference]: Without dead ends: 18508 [2021-11-07 16:20:14,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.59ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:20:14,831 INFO L933 BasicCegarLoop]: 4902 mSDtfsCounter, 3885 mSDsluCounter, 5889 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2359.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3885 SdHoareTripleChecker+Valid, 10791 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.21ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2580.18ms IncrementalHoareTripleChecker+Time [2021-11-07 16:20:14,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3885 Valid, 10791 Invalid, 29 Unknown, 0 Unchecked, 11.21ms Time], IncrementalHoareTripleChecker [11 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2580.18ms Time] [2021-11-07 16:20:14,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18508 states. [2021-11-07 16:20:15,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18508 to 13023. [2021-11-07 16:20:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13023 states, 13016 states have (on average 1.379379225568531) internal successors, (17954), 13022 states have internal predecessors, (17954), 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 16:20:15,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13023 states to 13023 states and 17954 transitions. [2021-11-07 16:20:15,110 INFO L78 Accepts]: Start accepts. Automaton has 13023 states and 17954 transitions. Word has length 159 [2021-11-07 16:20:15,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:20:15,110 INFO L470 AbstractCegarLoop]: Abstraction has 13023 states and 17954 transitions. [2021-11-07 16:20:15,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 16:20:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand 13023 states and 17954 transitions. [2021-11-07 16:20:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-07 16:20:15,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:20:15,120 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:15,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 16:20:15,120 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:20:15,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:20:15,121 INFO L85 PathProgramCache]: Analyzing trace with hash 228838889, now seen corresponding path program 1 times [2021-11-07 16:20:15,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:20:15,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295490741] [2021-11-07 16:20:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:20:15,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:20:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:20:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:20:15,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:20:15,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295490741] [2021-11-07 16:20:15,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295490741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:20:15,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:20:15,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:20:15,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665347237] [2021-11-07 16:20:15,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:20:15,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:20:15,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:20:15,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:20:15,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:20:15,922 INFO L87 Difference]: Start difference. First operand 13023 states and 17954 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 16:20:18,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:20:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:20:18,392 INFO L93 Difference]: Finished difference Result 26045 states and 35933 transitions. [2021-11-07 16:20:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:20:18,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 168 [2021-11-07 16:20:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:20:18,412 INFO L225 Difference]: With dead ends: 26045 [2021-11-07 16:20:18,413 INFO L226 Difference]: Without dead ends: 13099 [2021-11-07 16:20:18,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 94.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:20:18,429 INFO L933 BasicCegarLoop]: 2686 mSDtfsCounter, 201 mSDsluCounter, 5269 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2143.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 7955 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.92ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2195.57ms IncrementalHoareTripleChecker+Time [2021-11-07 16:20:18,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 7955 Invalid, 15 Unknown, 0 Unchecked, 4.92ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2195.57ms Time] [2021-11-07 16:20:18,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13099 states. [2021-11-07 16:20:18,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13099 to 13023. [2021-11-07 16:20:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13023 states, 13016 states have (on average 1.3791487400122926) internal successors, (17951), 13022 states have internal predecessors, (17951), 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 16:20:18,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13023 states to 13023 states and 17951 transitions. [2021-11-07 16:20:18,679 INFO L78 Accepts]: Start accepts. Automaton has 13023 states and 17951 transitions. Word has length 168 [2021-11-07 16:20:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:20:18,679 INFO L470 AbstractCegarLoop]: Abstraction has 13023 states and 17951 transitions. [2021-11-07 16:20:18,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 16:20:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 13023 states and 17951 transitions. [2021-11-07 16:20:18,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-07 16:20:18,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:20:18,686 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:18,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 16:20:18,687 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:20:18,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:20:18,687 INFO L85 PathProgramCache]: Analyzing trace with hash -987314837, now seen corresponding path program 1 times [2021-11-07 16:20:18,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:20:18,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557446980] [2021-11-07 16:20:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:20:18,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:20:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:20:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:20:19,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:20:19,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557446980] [2021-11-07 16:20:19,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557446980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:20:19,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:20:19,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 16:20:19,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302949925] [2021-11-07 16:20:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:20:19,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 16:20:19,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:20:19,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 16:20:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:20:19,471 INFO L87 Difference]: Start difference. First operand 13023 states and 17951 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 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 16:20:21,945 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:20:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:20:23,409 INFO L93 Difference]: Finished difference Result 37923 states and 52573 transitions. [2021-11-07 16:20:23,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 16:20:23,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 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 168 [2021-11-07 16:20:23,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:20:23,458 INFO L225 Difference]: With dead ends: 37923 [2021-11-07 16:20:23,458 INFO L226 Difference]: Without dead ends: 24957 [2021-11-07 16:20:23,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 652.67ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-07 16:20:23,482 INFO L933 BasicCegarLoop]: 2753 mSDtfsCounter, 2572 mSDsluCounter, 13400 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2856.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 16153 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.61ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2977.59ms IncrementalHoareTripleChecker+Time [2021-11-07 16:20:23,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2572 Valid, 16153 Invalid, 256 Unknown, 0 Unchecked, 13.61ms Time], IncrementalHoareTripleChecker [29 Valid, 226 Invalid, 1 Unknown, 0 Unchecked, 2977.59ms Time] [2021-11-07 16:20:23,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24957 states. [2021-11-07 16:20:23,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24957 to 13023. [2021-11-07 16:20:23,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13023 states, 13016 states have (on average 1.378918254456054) internal successors, (17948), 13022 states have internal predecessors, (17948), 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 16:20:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13023 states to 13023 states and 17948 transitions. [2021-11-07 16:20:23,865 INFO L78 Accepts]: Start accepts. Automaton has 13023 states and 17948 transitions. Word has length 168 [2021-11-07 16:20:23,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:20:23,866 INFO L470 AbstractCegarLoop]: Abstraction has 13023 states and 17948 transitions. [2021-11-07 16:20:23,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 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 16:20:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 13023 states and 17948 transitions. [2021-11-07 16:20:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-07 16:20:23,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:20:23,873 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:23,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 16:20:23,873 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:20:23,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:20:23,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1526404221, now seen corresponding path program 1 times [2021-11-07 16:20:23,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:20:23,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244930364] [2021-11-07 16:20:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:20:23,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:20:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:20:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 16:20:24,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:20:24,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244930364] [2021-11-07 16:20:24,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244930364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:20:24,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:20:24,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:20:24,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164861774] [2021-11-07 16:20:24,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:20:24,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:20:24,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:20:24,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:20:24,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:20:24,903 INFO L87 Difference]: Start difference. First operand 13023 states and 17948 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 16:20:25,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:20:25,314 INFO L93 Difference]: Finished difference Result 25993 states and 35849 transitions. [2021-11-07 16:20:25,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:20:25,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 174 [2021-11-07 16:20:25,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:20:25,332 INFO L225 Difference]: With dead ends: 25993 [2021-11-07 16:20:25,332 INFO L226 Difference]: Without dead ends: 13030 [2021-11-07 16:20:25,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:20:25,346 INFO L933 BasicCegarLoop]: 2678 mSDtfsCounter, 0 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5324 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.12ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 176.87ms IncrementalHoareTripleChecker+Time [2021-11-07 16:20:25,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5324 Invalid, 51 Unknown, 0 Unchecked, 3.12ms Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 176.87ms Time] [2021-11-07 16:20:25,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13030 states. [2021-11-07 16:20:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13030 to 13030. [2021-11-07 16:20:25,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13030 states, 13023 states have (on average 1.3787145818935729) internal successors, (17955), 13029 states have internal predecessors, (17955), 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 16:20:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13030 states to 13030 states and 17955 transitions. [2021-11-07 16:20:25,634 INFO L78 Accepts]: Start accepts. Automaton has 13030 states and 17955 transitions. Word has length 174 [2021-11-07 16:20:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:20:25,634 INFO L470 AbstractCegarLoop]: Abstraction has 13030 states and 17955 transitions. [2021-11-07 16:20:25,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 16:20:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 13030 states and 17955 transitions. [2021-11-07 16:20:25,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-07 16:20:25,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:20:25,641 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:25,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 16:20:25,642 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:20:25,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:20:25,642 INFO L85 PathProgramCache]: Analyzing trace with hash 749433849, now seen corresponding path program 1 times [2021-11-07 16:20:25,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:20:25,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547529845] [2021-11-07 16:20:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:20:25,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:20:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:20:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 16:20:26,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:20:26,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547529845] [2021-11-07 16:20:26,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547529845] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:20:26,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254624580] [2021-11-07 16:20:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:20:26,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:20:26,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:20:26,637 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 16:20:26,659 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 16:20:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:20:28,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 6632 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 16:20:28,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:20:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 16:20:28,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:20:28,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254624580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:20:28,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:20:28,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-07 16:20:28,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748542043] [2021-11-07 16:20:28,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:20:28,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:20:28,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:20:28,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:20:28,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:20:28,846 INFO L87 Difference]: Start difference. First operand 13030 states and 17955 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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 16:20:30,973 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:20:31,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:20:31,648 INFO L93 Difference]: Finished difference Result 25933 states and 35773 transitions. [2021-11-07 16:20:31,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:20:31,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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 181 [2021-11-07 16:20:31,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:20:31,667 INFO L225 Difference]: With dead ends: 25933 [2021-11-07 16:20:31,668 INFO L226 Difference]: Without dead ends: 12983 [2021-11-07 16:20:31,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 283.43ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-07 16:20:31,684 INFO L933 BasicCegarLoop]: 2682 mSDtfsCounter, 5 mSDsluCounter, 8034 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2181.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10716 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.81ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2349.85ms IncrementalHoareTripleChecker+Time [2021-11-07 16:20:31,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 10716 Invalid, 19 Unknown, 0 Unchecked, 4.81ms Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2349.85ms Time] [2021-11-07 16:20:31,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2021-11-07 16:20:31,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 12949. [2021-11-07 16:20:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12949 states, 12942 states have (on average 1.3806212331942513) internal successors, (17868), 12948 states have internal predecessors, (17868), 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 16:20:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12949 states to 12949 states and 17868 transitions. [2021-11-07 16:20:31,961 INFO L78 Accepts]: Start accepts. Automaton has 12949 states and 17868 transitions. Word has length 181 [2021-11-07 16:20:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:20:31,962 INFO L470 AbstractCegarLoop]: Abstraction has 12949 states and 17868 transitions. [2021-11-07 16:20:31,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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 16:20:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 12949 states and 17868 transitions. [2021-11-07 16:20:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-07 16:20:31,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:20:31,968 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:31,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 16:20:32,186 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,SelfDestructingSolverStorable13 [2021-11-07 16:20:32,188 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:20:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:20:32,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2073928628, now seen corresponding path program 1 times [2021-11-07 16:20:32,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:20:32,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484048618] [2021-11-07 16:20:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:20:32,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:20:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:20:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 16:20:34,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:20:34,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484048618] [2021-11-07 16:20:34,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484048618] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:20:34,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542184683] [2021-11-07 16:20:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:20:34,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:20:34,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:20:34,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:20:34,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 16:20:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:20:37,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 6741 conjuncts, 139 conjunts are in the unsatisfiable core [2021-11-07 16:20:37,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:20:38,077 INFO L354 Elim1Store]: treesize reduction 776, result has 5.0 percent of original size [2021-11-07 16:20:38,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 18 case distinctions, treesize of input 142 treesize of output 149 [2021-11-07 16:20:39,594 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-07 16:20:39,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 60 [2021-11-07 16:20:40,781 INFO L354 Elim1Store]: treesize reduction 148, result has 27.1 percent of original size [2021-11-07 16:20:40,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 45 treesize of output 84 [2021-11-07 16:20:43,008 INFO L354 Elim1Store]: treesize reduction 214, result has 23.0 percent of original size [2021-11-07 16:20:43,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 74 treesize of output 120 [2021-11-07 16:20:46,438 INFO L354 Elim1Store]: treesize reduction 288, result has 20.2 percent of original size [2021-11-07 16:20:46,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 107 treesize of output 160 [2021-11-07 16:20:51,391 INFO L354 Elim1Store]: treesize reduction 370, result has 18.1 percent of original size [2021-11-07 16:20:51,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 144 treesize of output 204 [2021-11-07 16:21:00,323 INFO L354 Elim1Store]: treesize reduction 460, result has 16.5 percent of original size [2021-11-07 16:21:00,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 185 treesize of output 252 [2021-11-07 16:21:15,957 INFO L354 Elim1Store]: treesize reduction 558, result has 15.2 percent of original size [2021-11-07 16:21:15,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 67 case distinctions, treesize of input 230 treesize of output 304 [2021-11-07 16:21:38,325 WARN L228 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-07 16:21:38,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-07 16:21:38,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:21:38,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-07 16:21:38,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471351274] [2021-11-07 16:21:38,326 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-07 16:21:38,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:21:38,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:21:38,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:21:38,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=54, Unknown=3, NotChecked=0, Total=90 [2021-11-07 16:21:38,327 INFO L87 Difference]: Start difference. First operand 12949 states and 17868 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 16:21:38,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 16:21:38,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 11020.79ms TimeCoverageRelationStatistics Valid=33, Invalid=54, Unknown=3, NotChecked=0, Total=90 [2021-11-07 16:21:38,329 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:21:38,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 175 Invalid, 1 Unknown, 0 Unchecked, 0.11ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 16:21:38,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-07 16:21:38,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 16:21:38,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 16:21:38,531 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2b0c8f13 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 16:21:38,534 INFO L158 Benchmark]: Toolchain (without parser) took 136821.66ms. Allocated memory was 119.5MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 83.2MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2021-11-07 16:21:38,534 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory was 77.6MB in the beginning and 77.5MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 16:21:38,535 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1743.42ms. Allocated memory was 119.5MB in the beginning and 218.1MB in the end (delta: 98.6MB). Free memory was 82.7MB in the beginning and 138.4MB in the end (delta: -55.7MB). Peak memory consumption was 77.4MB. Max. memory is 16.1GB. [2021-11-07 16:21:38,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 362.74ms. Allocated memory is still 218.1MB. Free memory was 138.4MB in the beginning and 102.6MB in the end (delta: 35.8MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. [2021-11-07 16:21:38,535 INFO L158 Benchmark]: Boogie Preprocessor took 511.69ms. Allocated memory was 218.1MB in the beginning and 436.2MB in the end (delta: 218.1MB). Free memory was 102.6MB in the beginning and 304.6MB in the end (delta: -202.0MB). Peak memory consumption was 80.1MB. Max. memory is 16.1GB. [2021-11-07 16:21:38,535 INFO L158 Benchmark]: RCFGBuilder took 30879.73ms. Allocated memory was 436.2MB in the beginning and 1.3GB in the end (delta: 866.1MB). Free memory was 304.6MB in the beginning and 575.5MB in the end (delta: -270.9MB). Peak memory consumption was 797.9MB. Max. memory is 16.1GB. [2021-11-07 16:21:38,535 INFO L158 Benchmark]: TraceAbstraction took 103319.64ms. Allocated memory was 1.3GB in the beginning and 2.3GB in the end (delta: 954.2MB). Free memory was 575.5MB in the beginning and 1.2GB in the end (delta: -591.7MB). Peak memory consumption was 362.6MB. Max. memory is 16.1GB. [2021-11-07 16:21:38,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory was 77.6MB in the beginning and 77.5MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1743.42ms. Allocated memory was 119.5MB in the beginning and 218.1MB in the end (delta: 98.6MB). Free memory was 82.7MB in the beginning and 138.4MB in the end (delta: -55.7MB). Peak memory consumption was 77.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 362.74ms. Allocated memory is still 218.1MB. Free memory was 138.4MB in the beginning and 102.6MB in the end (delta: 35.8MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 511.69ms. Allocated memory was 218.1MB in the beginning and 436.2MB in the end (delta: 218.1MB). Free memory was 102.6MB in the beginning and 304.6MB in the end (delta: -202.0MB). Peak memory consumption was 80.1MB. Max. memory is 16.1GB. * RCFGBuilder took 30879.73ms. Allocated memory was 436.2MB in the beginning and 1.3GB in the end (delta: 866.1MB). Free memory was 304.6MB in the beginning and 575.5MB in the end (delta: -270.9MB). Peak memory consumption was 797.9MB. Max. memory is 16.1GB. * TraceAbstraction took 103319.64ms. Allocated memory was 1.3GB in the beginning and 2.3GB in the end (delta: 954.2MB). Free memory was 575.5MB in the beginning and 1.2GB in the end (delta: -591.7MB). Peak memory consumption was 362.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2b0c8f13 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2b0c8f13: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:21:40,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:21:40,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:21:40,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:21:40,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:21:40,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:21:40,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:21:40,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:21:40,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:21:40,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:21:40,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:21:40,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:21:40,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:21:40,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:21:40,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:21:40,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:21:40,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:21:40,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:21:40,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:21:40,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:21:40,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:21:40,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:21:40,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:21:40,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:21:40,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:21:40,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:21:40,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:21:40,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:21:40,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:21:40,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:21:40,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:21:40,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:21:40,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:21:40,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:21:40,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:21:40,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:21:40,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:21:40,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:21:40,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:21:40,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:21:40,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:21:40,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-07 16:21:40,208 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:21:40,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:21:40,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:21:40,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:21:40,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:21:40,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:21:40,210 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:21:40,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:21:40,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:21:40,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:21:40,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:21:40,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:21:40,211 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 16:21:40,211 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 16:21:40,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:21:40,211 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:21:40,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:21:40,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:21:40,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:21:40,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:21:40,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:21:40,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:21:40,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:21:40,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:21:40,212 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 16:21:40,212 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 16:21:40,212 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:21:40,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:21:40,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:21:40,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:21:40,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 16:21:40,213 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 [2021-11-07 16:21:40,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:21:40,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:21:40,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:21:40,518 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:21:40,519 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:21:40,520 INFO L432 ainManager$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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-07 16:21:40,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6425a3c6c/4c0a659453d747d7ade390af43545abf/FLAGd7e6233a1 [2021-11-07 16:21:41,184 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:21:41,185 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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-07 16:21:41,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6425a3c6c/4c0a659453d747d7ade390af43545abf/FLAGd7e6233a1 [2021-11-07 16:21:41,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6425a3c6c/4c0a659453d747d7ade390af43545abf [2021-11-07 16:21:41,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:21:41,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:21:41,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:21:41,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:21:41,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:21:41,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:21:41" (1/1) ... [2021-11-07 16:21:41,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c06a252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:41, skipping insertion in model container [2021-11-07 16:21:41,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:21:41" (1/1) ... [2021-11-07 16:21:41,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:21:41,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:21:42,692 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2021-11-07 16:21:42,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:21:42,847 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:21:43,048 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2021-11-07 16:21:43,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:21:43,181 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:21:43,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:43 WrapperNode [2021-11-07 16:21:43,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:21:43,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:21:43,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:21:43,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:21:43,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:43" (1/1) ... [2021-11-07 16:21:43,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:43" (1/1) ... [2021-11-07 16:21:43,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:21:43,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:21:43,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:21:43,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:21:43,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:43" (1/1) ... [2021-11-07 16:21:43,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:43" (1/1) ... [2021-11-07 16:21:43,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:43" (1/1) ... [2021-11-07 16:21:43,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:43" (1/1) ... [2021-11-07 16:21:43,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:43" (1/1) ... [2021-11-07 16:21:44,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:43" (1/1) ... [2021-11-07 16:21:44,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:43" (1/1) ... [2021-11-07 16:21:44,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:21:44,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:21:44,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:21:44,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:21:44,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:43" (1/1) ... [2021-11-07 16:21:44,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:21:44,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:21:44,147 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 16:21:44,184 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 16:21:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 16:21:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-07 16:21:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 16:21:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 16:21:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 16:21:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:21:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 16:21:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:21:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:21:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 16:21:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:21:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 16:21:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 16:21:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 16:21:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:21:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 16:21:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:21:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 16:21:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 16:21:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 16:21:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 16:21:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 16:21:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 16:21:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 16:21:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 16:21:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:21:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:21:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 16:21:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 16:21:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 16:21:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 16:21:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 16:21:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:21:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:22:55,273 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:22:55,274 INFO L299 CfgBuilder]: Removed 1993 assume(true) statements. [2021-11-07 16:22:55,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:22:55 BoogieIcfgContainer [2021-11-07 16:22:55,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:22:55,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:22:55,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:22:55,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:22:55,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:21:41" (1/3) ... [2021-11-07 16:22:55,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb4b9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:22:55, skipping insertion in model container [2021-11-07 16:22:55,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:43" (2/3) ... [2021-11-07 16:22:55,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb4b9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:22:55, skipping insertion in model container [2021-11-07 16:22:55,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:22:55" (3/3) ... [2021-11-07 16:22:55,283 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-07 16:22:55,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:22:55,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-07 16:22:55,320 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:22:55,324 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 16:22:55,325 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-07 16:22:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 2026 states, 2006 states have (on average 1.4087736789631107) internal successors, (2826), 2025 states have internal predecessors, (2826), 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 16:22:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 16:22:55,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:22:55,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:22:55,359 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:22:55,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:22:55,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1062845019, now seen corresponding path program 1 times [2021-11-07 16:22:55,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:22:55,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275405571] [2021-11-07 16:22:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:22:55,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:22:55,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:22:55,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:22:55,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 16:22:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:23:00,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 3407 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 16:23:00,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:23:01,546 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 16:23:01,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:23:02,851 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 16:23:02,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:23:02,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275405571] [2021-11-07 16:23:02,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275405571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:23:02,853 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:23:02,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 16:23:02,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053386609] [2021-11-07 16:23:02,855 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:23:02,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 16:23:02,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:23:02,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 16:23:02,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:23:02,892 INFO L87 Difference]: Start difference. First operand has 2026 states, 2006 states have (on average 1.4087736789631107) internal successors, (2826), 2025 states have internal predecessors, (2826), 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 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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 16:23:02,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:23:02,981 INFO L93 Difference]: Finished difference Result 4048 states and 5647 transitions. [2021-11-07 16:23:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 16:23:02,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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 103 [2021-11-07 16:23:02,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:23:03,000 INFO L225 Difference]: With dead ends: 4048 [2021-11-07 16:23:03,000 INFO L226 Difference]: Without dead ends: 2009 [2021-11-07 16:23:03,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:23:03,012 INFO L933 BasicCegarLoop]: 2740 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, 2740 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.85ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:23:03,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2740 Invalid, 0 Unknown, 0 Unchecked, 7.85ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 16:23:03,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2021-11-07 16:23:03,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 2009. [2021-11-07 16:23:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1990 states have (on average 1.3633165829145728) internal successors, (2713), 2008 states have internal predecessors, (2713), 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 16:23:03,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2713 transitions. [2021-11-07 16:23:03,098 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2713 transitions. Word has length 103 [2021-11-07 16:23:03,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:23:03,098 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 2713 transitions. [2021-11-07 16:23:03,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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 16:23:03,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2713 transitions. [2021-11-07 16:23:03,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 16:23:03,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:23:03,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:23:03,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 16:23:03,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:23:03,324 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:23:03,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:23:03,324 INFO L85 PathProgramCache]: Analyzing trace with hash 666457411, now seen corresponding path program 1 times [2021-11-07 16:23:03,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:23:03,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479799145] [2021-11-07 16:23:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:23:03,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:23:03,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:23:03,342 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:23:03,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 16:23:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:23:08,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 3407 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 16:23:08,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:23:09,107 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 16:23:09,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:23:09,990 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 16:23:09,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:23:09,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479799145] [2021-11-07 16:23:09,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479799145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:23:09,991 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:23:09,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 16:23:09,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700147224] [2021-11-07 16:23:09,991 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:23:09,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:23:09,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:23:09,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:23:09,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:23:09,993 INFO L87 Difference]: Start difference. First operand 2009 states and 2713 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 16:23:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:23:11,233 INFO L93 Difference]: Finished difference Result 3978 states and 5405 transitions. [2021-11-07 16:23:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:23:11,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 103 [2021-11-07 16:23:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:23:11,239 INFO L225 Difference]: With dead ends: 3978 [2021-11-07 16:23:11,239 INFO L226 Difference]: Without dead ends: 2029 [2021-11-07 16:23:11,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 208.70ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:23:11,242 INFO L933 BasicCegarLoop]: 2700 mSDtfsCounter, 0 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1068.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.67ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1178.36ms IncrementalHoareTripleChecker+Time [2021-11-07 16:23:11,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5374 Invalid, 95 Unknown, 0 Unchecked, 10.67ms Time], IncrementalHoareTripleChecker [43 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 1178.36ms Time] [2021-11-07 16:23:11,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2021-11-07 16:23:11,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2029. [2021-11-07 16:23:11,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 2010 states have (on average 1.3597014925373134) internal successors, (2733), 2028 states have internal predecessors, (2733), 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 16:23:11,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2733 transitions. [2021-11-07 16:23:11,268 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2733 transitions. Word has length 103 [2021-11-07 16:23:11,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:23:11,269 INFO L470 AbstractCegarLoop]: Abstraction has 2029 states and 2733 transitions. [2021-11-07 16:23:11,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 16:23:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2733 transitions. [2021-11-07 16:23:11,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 16:23:11,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:23:11,274 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 16:23:11,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 16:23:11,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:23:11,498 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:23:11,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:23:11,498 INFO L85 PathProgramCache]: Analyzing trace with hash 376382417, now seen corresponding path program 1 times [2021-11-07 16:23:11,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:23:11,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765372340] [2021-11-07 16:23:11,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:23:11,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:23:11,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:23:11,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:23:11,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 16:23:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:23:16,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 3482 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 16:23:16,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:23:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 16:23:17,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:23:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 16:23:19,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:23:19,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765372340] [2021-11-07 16:23:19,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765372340] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:23:19,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 16:23:19,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-07 16:23:19,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184877745] [2021-11-07 16:23:19,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 16:23:19,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 16:23:19,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:23:19,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 16:23:19,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:23:19,687 INFO L87 Difference]: Start difference. First operand 2029 states and 2733 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 16:23:25,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:23:25,536 INFO L93 Difference]: Finished difference Result 4022 states and 5455 transitions. [2021-11-07 16:23:25,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 16:23:25,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 118 [2021-11-07 16:23:25,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:23:25,544 INFO L225 Difference]: With dead ends: 4022 [2021-11-07 16:23:25,544 INFO L226 Difference]: Without dead ends: 2055 [2021-11-07 16:23:25,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2136.78ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 16:23:25,547 INFO L933 BasicCegarLoop]: 2700 mSDtfsCounter, 0 mSDsluCounter, 8022 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4778.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10722 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.28ms SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4990.26ms IncrementalHoareTripleChecker+Time [2021-11-07 16:23:25,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10722 Invalid, 299 Unknown, 0 Unchecked, 9.28ms Time], IncrementalHoareTripleChecker [135 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 4990.26ms Time] [2021-11-07 16:23:25,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2021-11-07 16:23:25,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2055. [2021-11-07 16:23:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 2036 states have (on average 1.3551080550098231) internal successors, (2759), 2054 states have internal predecessors, (2759), 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 16:23:25,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2759 transitions. [2021-11-07 16:23:25,593 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2759 transitions. Word has length 118 [2021-11-07 16:23:25,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:23:25,594 INFO L470 AbstractCegarLoop]: Abstraction has 2055 states and 2759 transitions. [2021-11-07 16:23:25,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 16:23:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2759 transitions. [2021-11-07 16:23:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-07 16:23:25,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:23:25,596 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:25,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 16:23:25,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:23:25,804 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:23:25,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:23:25,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1432068527, now seen corresponding path program 2 times [2021-11-07 16:23:25,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:23:25,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764654808] [2021-11-07 16:23:25,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 16:23:25,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:23:25,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:23:25,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:23:25,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 16:23:30,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 16:23:30,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 16:23:30,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 3407 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:23:30,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:23:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-07 16:23:31,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:23:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-07 16:23:31,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:23:31,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764654808] [2021-11-07 16:23:31,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764654808] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:23:31,517 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:23:31,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 16:23:31,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998547963] [2021-11-07 16:23:31,517 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:23:31,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:23:31,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:23:31,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:23:31,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:23:31,518 INFO L87 Difference]: Start difference. First operand 2055 states and 2759 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:23:32,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:23:32,934 INFO L93 Difference]: Finished difference Result 5168 states and 7056 transitions. [2021-11-07 16:23:32,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:23:32,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-07 16:23:32,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:23:32,946 INFO L225 Difference]: With dead ends: 5168 [2021-11-07 16:23:32,946 INFO L226 Difference]: Without dead ends: 3228 [2021-11-07 16:23:32,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:23:32,954 INFO L933 BasicCegarLoop]: 2712 mSDtfsCounter, 1733 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1219.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.91ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1370.53ms IncrementalHoareTripleChecker+Time [2021-11-07 16:23:32,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1733 Valid, 5312 Invalid, 23 Unknown, 0 Unchecked, 5.91ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1370.53ms Time] [2021-11-07 16:23:32,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2021-11-07 16:23:32,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 3217. [2021-11-07 16:23:33,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3217 states, 3198 states have (on average 1.3799249530956847) internal successors, (4413), 3216 states have internal predecessors, (4413), 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 16:23:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 4413 transitions. [2021-11-07 16:23:33,007 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 4413 transitions. Word has length 134 [2021-11-07 16:23:33,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:23:33,012 INFO L470 AbstractCegarLoop]: Abstraction has 3217 states and 4413 transitions. [2021-11-07 16:23:33,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:23:33,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 4413 transitions. [2021-11-07 16:23:33,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-07 16:23:33,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:23:33,015 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:33,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 16:23:33,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:23:33,230 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:23:33,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:23:33,231 INFO L85 PathProgramCache]: Analyzing trace with hash -841563815, now seen corresponding path program 1 times [2021-11-07 16:23:33,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:23:33,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928919311] [2021-11-07 16:23:33,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:23:33,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:23:33,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:23:33,237 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:23:33,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 16:23:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:23:38,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 3575 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 16:23:38,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:23:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 16:23:40,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:23:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 16:23:42,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:23:42,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928919311] [2021-11-07 16:23:42,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928919311] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:23:42,824 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 16:23:42,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-07 16:23:42,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806358012] [2021-11-07 16:23:42,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 16:23:42,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 16:23:42,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:23:42,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 16:23:42,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 16:23:42,825 INFO L87 Difference]: Start difference. First operand 3217 states and 4413 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 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 16:24:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:24:00,871 INFO L93 Difference]: Finished difference Result 6378 states and 8782 transitions. [2021-11-07 16:24:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 16:24:00,872 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 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 135 [2021-11-07 16:24:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:24:00,880 INFO L225 Difference]: With dead ends: 6378 [2021-11-07 16:24:00,880 INFO L226 Difference]: Without dead ends: 3231 [2021-11-07 16:24:00,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3601.73ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-07 16:24:00,884 INFO L933 BasicCegarLoop]: 2700 mSDtfsCounter, 0 mSDsluCounter, 10696 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16201.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13396 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.55ms SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16522.18ms IncrementalHoareTripleChecker+Time [2021-11-07 16:24:00,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13396 Invalid, 364 Unknown, 0 Unchecked, 8.55ms Time], IncrementalHoareTripleChecker [132 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 16522.18ms Time] [2021-11-07 16:24:00,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2021-11-07 16:24:00,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3231. [2021-11-07 16:24:00,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3231 states, 3212 states have (on average 1.37826899128269) internal successors, (4427), 3230 states have internal predecessors, (4427), 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 16:24:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 4427 transitions. [2021-11-07 16:24:00,927 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 4427 transitions. Word has length 135 [2021-11-07 16:24:00,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:24:00,927 INFO L470 AbstractCegarLoop]: Abstraction has 3231 states and 4427 transitions. [2021-11-07 16:24:00,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 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 16:24:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 4427 transitions. [2021-11-07 16:24:00,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 16:24:00,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:24:00,929 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:00,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 16:24:01,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:24:01,155 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:24:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:24:01,156 INFO L85 PathProgramCache]: Analyzing trace with hash 407361319, now seen corresponding path program 2 times [2021-11-07 16:24:01,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:24:01,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931553467] [2021-11-07 16:24:01,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 16:24:01,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:24:01,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:24:01,164 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:24:01,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 16:24:05,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 16:24:05,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 16:24:05,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:24:05,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:24:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:24:06,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:24:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:24:06,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:24:06,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931553467] [2021-11-07 16:24:06,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931553467] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:24:06,956 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:24:06,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 16:24:06,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153680328] [2021-11-07 16:24:06,957 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:24:06,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:24:06,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:24:06,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:24:06,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:24:06,957 INFO L87 Difference]: Start difference. First operand 3231 states and 4427 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 16:24:08,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:24:08,399 INFO L93 Difference]: Finished difference Result 8999 states and 12413 transitions. [2021-11-07 16:24:08,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:24:08,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 140 [2021-11-07 16:24:08,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:24:08,415 INFO L225 Difference]: With dead ends: 8999 [2021-11-07 16:24:08,416 INFO L226 Difference]: Without dead ends: 5888 [2021-11-07 16:24:08,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:24:08,421 INFO L933 BasicCegarLoop]: 2712 mSDtfsCounter, 2395 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1186.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.16ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1376.68ms IncrementalHoareTripleChecker+Time [2021-11-07 16:24:08,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2395 Valid, 5312 Invalid, 23 Unknown, 0 Unchecked, 4.16ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1376.68ms Time] [2021-11-07 16:24:08,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2021-11-07 16:24:08,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5828. [2021-11-07 16:24:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5828 states, 5809 states have (on average 1.3887071785160958) internal successors, (8067), 5827 states have internal predecessors, (8067), 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 16:24:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 8067 transitions. [2021-11-07 16:24:08,631 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 8067 transitions. Word has length 140 [2021-11-07 16:24:08,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:24:08,632 INFO L470 AbstractCegarLoop]: Abstraction has 5828 states and 8067 transitions. [2021-11-07 16:24:08,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 16:24:08,632 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 8067 transitions. [2021-11-07 16:24:08,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 16:24:08,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:24:08,633 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:08,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 16:24:08,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:24:08,847 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:24:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:24:08,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1594206989, now seen corresponding path program 1 times [2021-11-07 16:24:08,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:24:08,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261375176] [2021-11-07 16:24:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:24:08,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:24:08,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:24:08,854 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:24:08,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 16:24:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:24:16,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 3608 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:24:16,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:24:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:24:16,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:24:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:24:17,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:24:17,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261375176] [2021-11-07 16:24:17,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261375176] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:24:17,349 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:24:17,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 16:24:17,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152742797] [2021-11-07 16:24:17,349 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:24:17,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:24:17,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:24:17,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:24:17,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:24:17,350 INFO L87 Difference]: Start difference. First operand 5828 states and 8067 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 16:24:20,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:24:20,234 INFO L93 Difference]: Finished difference Result 13826 states and 19040 transitions. [2021-11-07 16:24:20,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:24:20,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 144 [2021-11-07 16:24:20,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:24:20,254 INFO L225 Difference]: With dead ends: 13826 [2021-11-07 16:24:20,255 INFO L226 Difference]: Without dead ends: 8118 [2021-11-07 16:24:20,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:24:20,262 INFO L933 BasicCegarLoop]: 3015 mSDtfsCounter, 1481 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2541.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 5552 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.03ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2774.64ms IncrementalHoareTripleChecker+Time [2021-11-07 16:24:20,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 5552 Invalid, 86 Unknown, 0 Unchecked, 7.03ms Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 2774.64ms Time] [2021-11-07 16:24:20,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2021-11-07 16:24:20,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 8086. [2021-11-07 16:24:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8086 states, 8067 states have (on average 1.3736209247551754) internal successors, (11081), 8085 states have internal predecessors, (11081), 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 16:24:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 11081 transitions. [2021-11-07 16:24:20,400 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 11081 transitions. Word has length 144 [2021-11-07 16:24:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:24:20,400 INFO L470 AbstractCegarLoop]: Abstraction has 8086 states and 11081 transitions. [2021-11-07 16:24:20,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 16:24:20,401 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 11081 transitions. [2021-11-07 16:24:20,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-07 16:24:20,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:24:20,407 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-07 16:24:20,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 16:24:20,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:24:20,630 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:24:20,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:24:20,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1436017854, now seen corresponding path program 1 times [2021-11-07 16:24:20,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:24:20,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064345799] [2021-11-07 16:24:20,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:24:20,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:24:20,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:24:20,639 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:24:20,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 16:24:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:24:28,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 3791 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 16:24:28,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:24:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:24:30,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:24:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:24:31,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:24:31,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064345799] [2021-11-07 16:24:31,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064345799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:24:31,556 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:24:31,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-07 16:24:31,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213539774] [2021-11-07 16:24:31,556 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:24:31,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 16:24:31,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:24:31,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 16:24:31,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 16:24:31,557 INFO L87 Difference]: Start difference. First operand 8086 states and 11081 transitions. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 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 16:24:43,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:24:43,848 INFO L93 Difference]: Finished difference Result 60454 states and 83870 transitions. [2021-11-07 16:24:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 16:24:43,850 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 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 173 [2021-11-07 16:24:43,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:24:43,960 INFO L225 Difference]: With dead ends: 60454 [2021-11-07 16:24:43,960 INFO L226 Difference]: Without dead ends: 52488 [2021-11-07 16:24:43,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 341 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3647.42ms TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-11-07 16:24:43,984 INFO L933 BasicCegarLoop]: 2783 mSDtfsCounter, 24512 mSDsluCounter, 41205 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8554.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24512 SdHoareTripleChecker+Valid, 43988 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.32ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8844.90ms IncrementalHoareTripleChecker+Time [2021-11-07 16:24:43,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24512 Valid, 43988 Invalid, 609 Unknown, 0 Unchecked, 46.32ms Time], IncrementalHoareTripleChecker [63 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 8844.90ms Time] [2021-11-07 16:24:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52488 states. [2021-11-07 16:24:44,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52488 to 8126. [2021-11-07 16:24:44,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8126 states, 8107 states have (on average 1.3717774762550883) internal successors, (11121), 8125 states have internal predecessors, (11121), 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 16:24:44,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8126 states to 8126 states and 11121 transitions. [2021-11-07 16:24:44,447 INFO L78 Accepts]: Start accepts. Automaton has 8126 states and 11121 transitions. Word has length 173 [2021-11-07 16:24:44,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:24:44,448 INFO L470 AbstractCegarLoop]: Abstraction has 8126 states and 11121 transitions. [2021-11-07 16:24:44,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 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 16:24:44,448 INFO L276 IsEmpty]: Start isEmpty. Operand 8126 states and 11121 transitions. [2021-11-07 16:24:44,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-07 16:24:44,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:24:44,450 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-07 16:24:44,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 16:24:44,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:24:44,679 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:24:44,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:24:44,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1041651068, now seen corresponding path program 1 times [2021-11-07 16:24:44,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:24:44,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191728052] [2021-11-07 16:24:44,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:24:44,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:24:44,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:24:44,686 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:24:44,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 16:24:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:24:52,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 3791 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 16:24:52,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:24:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:24:54,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:24:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:24:57,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:24:57,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191728052] [2021-11-07 16:24:57,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191728052] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:24:57,053 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:24:57,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-07 16:24:57,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111314831] [2021-11-07 16:24:57,054 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:24:57,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 16:24:57,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:24:57,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 16:24:57,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-07 16:24:57,055 INFO L87 Difference]: Start difference. First operand 8126 states and 11121 transitions. Second operand has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 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 16:25:02,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:25:04,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:25:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:25:23,302 INFO L93 Difference]: Finished difference Result 68293 states and 94604 transitions. [2021-11-07 16:25:23,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 16:25:23,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 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 173 [2021-11-07 16:25:23,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:25:23,410 INFO L225 Difference]: With dead ends: 68293 [2021-11-07 16:25:23,410 INFO L226 Difference]: Without dead ends: 60287 [2021-11-07 16:25:23,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 7773.23ms TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2021-11-07 16:25:23,436 INFO L933 BasicCegarLoop]: 3995 mSDtfsCounter, 45176 mSDsluCounter, 36649 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 61 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17687.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45176 SdHoareTripleChecker+Valid, 40644 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.93ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18520.92ms IncrementalHoareTripleChecker+Time [2021-11-07 16:25:23,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45176 Valid, 40644 Invalid, 773 Unknown, 0 Unchecked, 55.93ms Time], IncrementalHoareTripleChecker [61 Valid, 710 Invalid, 2 Unknown, 0 Unchecked, 18520.92ms Time] [2021-11-07 16:25:23,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60287 states. [2021-11-07 16:25:24,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60287 to 8142. [2021-11-07 16:25:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8142 states, 8123 states have (on average 1.3710451803520867) internal successors, (11137), 8141 states have internal predecessors, (11137), 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 16:25:24,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8142 states to 8142 states and 11137 transitions. [2021-11-07 16:25:24,264 INFO L78 Accepts]: Start accepts. Automaton has 8142 states and 11137 transitions. Word has length 173 [2021-11-07 16:25:24,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:25:24,266 INFO L470 AbstractCegarLoop]: Abstraction has 8142 states and 11137 transitions. [2021-11-07 16:25:24,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 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 16:25:24,266 INFO L276 IsEmpty]: Start isEmpty. Operand 8142 states and 11137 transitions. [2021-11-07 16:25:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-07 16:25:24,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:25:24,268 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-07 16:25:24,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 16:25:24,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:25:24,495 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:25:24,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:25:24,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2108156465, now seen corresponding path program 1 times [2021-11-07 16:25:24,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:25:24,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79320656] [2021-11-07 16:25:24,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:25:24,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:25:24,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:25:24,502 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:25:24,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 16:25:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:25:32,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 3732 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 16:25:32,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:25:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:25:33,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:25:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:25:34,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:25:34,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79320656] [2021-11-07 16:25:34,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79320656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:25:34,407 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:25:34,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 16:25:34,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608172204] [2021-11-07 16:25:34,407 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:25:34,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 16:25:34,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:25:34,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 16:25:34,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 16:25:34,408 INFO L87 Difference]: Start difference. First operand 8142 states and 11137 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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 16:25:36,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:25:38,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:25:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:25:40,608 INFO L93 Difference]: Finished difference Result 24158 states and 33117 transitions. [2021-11-07 16:25:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 16:25:40,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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 175 [2021-11-07 16:25:40,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:25:40,631 INFO L225 Difference]: With dead ends: 24158 [2021-11-07 16:25:40,632 INFO L226 Difference]: Without dead ends: 16000 [2021-11-07 16:25:40,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 762.33ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:25:40,644 INFO L933 BasicCegarLoop]: 4347 mSDtfsCounter, 2599 mSDsluCounter, 15725 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4987.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2599 SdHoareTripleChecker+Valid, 20072 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.08ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5124.09ms IncrementalHoareTripleChecker+Time [2021-11-07 16:25:40,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2599 Valid, 20072 Invalid, 35 Unknown, 0 Unchecked, 11.08ms Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 5124.09ms Time] [2021-11-07 16:25:40,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16000 states. [2021-11-07 16:25:41,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16000 to 8086. [2021-11-07 16:25:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8086 states, 8067 states have (on average 1.370645841080947) internal successors, (11057), 8085 states have internal predecessors, (11057), 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 16:25:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 11057 transitions. [2021-11-07 16:25:41,165 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 11057 transitions. Word has length 175 [2021-11-07 16:25:41,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:25:41,165 INFO L470 AbstractCegarLoop]: Abstraction has 8086 states and 11057 transitions. [2021-11-07 16:25:41,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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 16:25:41,165 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 11057 transitions. [2021-11-07 16:25:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-07 16:25:41,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:25:41,168 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-07 16:25:41,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 16:25:41,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:25:41,382 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:25:41,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:25:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash 449540708, now seen corresponding path program 1 times [2021-11-07 16:25:41,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:25:41,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285813152] [2021-11-07 16:25:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:25:41,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:25:41,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:25:41,391 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:25:41,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 16:25:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:25:49,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 3817 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 16:25:49,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:25:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:25:50,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:25:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:25:51,063 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:25:51,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285813152] [2021-11-07 16:25:51,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285813152] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:25:51,063 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:25:51,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 16:25:51,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622800250] [2021-11-07 16:25:51,063 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:25:51,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:25:51,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:25:51,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:25:51,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:25:51,064 INFO L87 Difference]: Start difference. First operand 8086 states and 11057 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 16:25:52,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:25:52,725 INFO L93 Difference]: Finished difference Result 23804 states and 32684 transitions. [2021-11-07 16:25:52,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:25:52,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 179 [2021-11-07 16:25:52,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:25:52,745 INFO L225 Difference]: With dead ends: 23804 [2021-11-07 16:25:52,745 INFO L226 Difference]: Without dead ends: 15838 [2021-11-07 16:25:52,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 340.97ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:25:52,794 INFO L933 BasicCegarLoop]: 4329 mSDtfsCounter, 6254 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 662.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6254 SdHoareTripleChecker+Valid, 7032 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.73ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 761.55ms IncrementalHoareTripleChecker+Time [2021-11-07 16:25:52,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6254 Valid, 7032 Invalid, 14 Unknown, 0 Unchecked, 6.73ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 761.55ms Time] [2021-11-07 16:25:52,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15838 states. [2021-11-07 16:25:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15838 to 7930. [2021-11-07 16:25:53,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7930 states, 7911 states have (on average 1.3758058399696624) internal successors, (10884), 7929 states have internal predecessors, (10884), 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 16:25:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 10884 transitions. [2021-11-07 16:25:53,241 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 10884 transitions. Word has length 179 [2021-11-07 16:25:53,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:25:53,241 INFO L470 AbstractCegarLoop]: Abstraction has 7930 states and 10884 transitions. [2021-11-07 16:25:53,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 16:25:53,241 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 10884 transitions. [2021-11-07 16:25:53,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-07 16:25:53,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:25:53,243 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-07 16:25:53,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 16:25:53,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:25:53,472 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:25:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:25:53,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1059430387, now seen corresponding path program 1 times [2021-11-07 16:25:53,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:25:53,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605138630] [2021-11-07 16:25:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:25:53,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:25:53,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:25:53,478 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:25:53,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 16:26:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:01,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 3843 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 16:26:01,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:26:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:26:02,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:26:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:26:03,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:26:03,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605138630] [2021-11-07 16:26:03,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605138630] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:03,563 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:03,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 16:26:03,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341391912] [2021-11-07 16:26:03,564 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:03,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:26:03,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:26:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:26:03,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:26:03,564 INFO L87 Difference]: Start difference. First operand 7930 states and 10884 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 16:26:06,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:26:07,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:07,224 INFO L93 Difference]: Finished difference Result 15723 states and 21622 transitions. [2021-11-07 16:26:07,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:26:07,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 185 [2021-11-07 16:26:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:07,236 INFO L225 Difference]: With dead ends: 15723 [2021-11-07 16:26:07,237 INFO L226 Difference]: Without dead ends: 7905 [2021-11-07 16:26:07,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 701.45ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:26:07,247 INFO L933 BasicCegarLoop]: 2706 mSDtfsCounter, 5 mSDsluCounter, 8106 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2761.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10812 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.52ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2869.72ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:07,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 10812 Invalid, 20 Unknown, 0 Unchecked, 4.52ms Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2869.72ms Time] [2021-11-07 16:26:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7905 states. [2021-11-07 16:26:07,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7905 to 7888. [2021-11-07 16:26:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7888 states, 7869 states have (on average 1.377303342229) internal successors, (10838), 7887 states have internal predecessors, (10838), 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 16:26:07,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7888 states to 7888 states and 10838 transitions. [2021-11-07 16:26:07,712 INFO L78 Accepts]: Start accepts. Automaton has 7888 states and 10838 transitions. Word has length 185 [2021-11-07 16:26:07,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:07,712 INFO L470 AbstractCegarLoop]: Abstraction has 7888 states and 10838 transitions. [2021-11-07 16:26:07,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 16:26:07,713 INFO L276 IsEmpty]: Start isEmpty. Operand 7888 states and 10838 transitions. [2021-11-07 16:26:07,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-07 16:26:07,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:07,725 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:26:07,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 16:26:07,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:26:07,940 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:26:07,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:07,940 INFO L85 PathProgramCache]: Analyzing trace with hash 195650102, now seen corresponding path program 1 times [2021-11-07 16:26:07,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:26:07,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59880105] [2021-11-07 16:26:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:07,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:26:07,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:26:07,947 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:26:07,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 16:26:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:15,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 3884 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:26:15,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:26:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:26:17,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:26:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:26:19,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:26:19,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59880105] [2021-11-07 16:26:19,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59880105] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:19,068 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:19,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 16:26:19,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493192826] [2021-11-07 16:26:19,068 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:19,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:26:19,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:26:19,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:26:19,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:26:19,069 INFO L87 Difference]: Start difference. First operand 7888 states and 10838 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 16:26:21,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:26:23,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:23,465 INFO L93 Difference]: Finished difference Result 20576 states and 28626 transitions. [2021-11-07 16:26:23,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:26:23,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 191 [2021-11-07 16:26:23,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:23,481 INFO L225 Difference]: With dead ends: 20576 [2021-11-07 16:26:23,481 INFO L226 Difference]: Without dead ends: 12808 [2021-11-07 16:26:23,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 151.21ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:26:23,492 INFO L933 BasicCegarLoop]: 2805 mSDtfsCounter, 3968 mSDsluCounter, 4033 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3592.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3968 SdHoareTripleChecker+Valid, 6838 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3755.03ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:23,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3968 Valid, 6838 Invalid, 60 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 1 Unknown, 0 Unchecked, 3755.03ms Time] [2021-11-07 16:26:23,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12808 states. [2021-11-07 16:26:24,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12808 to 12752. [2021-11-07 16:26:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12752 states, 12733 states have (on average 1.400298437131862) internal successors, (17830), 12751 states have internal predecessors, (17830), 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 16:26:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12752 states to 12752 states and 17830 transitions. [2021-11-07 16:26:24,146 INFO L78 Accepts]: Start accepts. Automaton has 12752 states and 17830 transitions. Word has length 191 [2021-11-07 16:26:24,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:24,147 INFO L470 AbstractCegarLoop]: Abstraction has 12752 states and 17830 transitions. [2021-11-07 16:26:24,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 16:26:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand 12752 states and 17830 transitions. [2021-11-07 16:26:24,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-07 16:26:24,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:24,149 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-07 16:26:24,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 16:26:24,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:26:24,376 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:26:24,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:24,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1921893868, now seen corresponding path program 1 times [2021-11-07 16:26:24,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:26:24,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543596502] [2021-11-07 16:26:24,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:24,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:26:24,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:26:24,384 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:26:24,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 16:26:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:32,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 3897 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:26:32,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:26:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-07 16:26:39,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:26:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-07 16:26:47,013 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:26:47,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543596502] [2021-11-07 16:26:47,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543596502] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:26:47,013 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:26:47,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 16:26:47,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821218775] [2021-11-07 16:26:47,013 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:26:47,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:26:47,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:26:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:26:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:47,014 INFO L87 Difference]: Start difference. First operand 12752 states and 17830 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 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 16:26:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:26:48,540 INFO L93 Difference]: Finished difference Result 12752 states and 17830 transitions. [2021-11-07 16:26:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:26:48,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 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 192 [2021-11-07 16:26:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:26:48,553 INFO L225 Difference]: With dead ends: 12752 [2021-11-07 16:26:48,553 INFO L226 Difference]: Without dead ends: 12728 [2021-11-07 16:26:48,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:26:48,556 INFO L933 BasicCegarLoop]: 2668 mSDtfsCounter, 2314 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 854.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.87ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 924.43ms IncrementalHoareTripleChecker+Time [2021-11-07 16:26:48,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2314 Valid, 2827 Invalid, 74 Unknown, 0 Unchecked, 2.87ms Time], IncrementalHoareTripleChecker [32 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 924.43ms Time] [2021-11-07 16:26:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12728 states. [2021-11-07 16:26:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12728 to 12728. [2021-11-07 16:26:49,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12728 states, 12721 states have (on average 1.3956449964625421) internal successors, (17754), 12727 states have internal predecessors, (17754), 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 16:26:49,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12728 states to 12728 states and 17754 transitions. [2021-11-07 16:26:49,209 INFO L78 Accepts]: Start accepts. Automaton has 12728 states and 17754 transitions. Word has length 192 [2021-11-07 16:26:49,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:26:49,210 INFO L470 AbstractCegarLoop]: Abstraction has 12728 states and 17754 transitions. [2021-11-07 16:26:49,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 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 16:26:49,210 INFO L276 IsEmpty]: Start isEmpty. Operand 12728 states and 17754 transitions. [2021-11-07 16:26:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-07 16:26:49,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:26:49,213 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:26:49,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 16:26:49,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:26:49,430 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:26:49,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:26:49,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1176081279, now seen corresponding path program 1 times [2021-11-07 16:26:49,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:26:49,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331101290] [2021-11-07 16:26:49,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:26:49,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:26:49,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:26:49,436 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:26:49,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 16:26:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:26:57,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 3915 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:26:57,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:26:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:26:59,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:27:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:27:00,376 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:27:00,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331101290] [2021-11-07 16:27:00,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331101290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:27:00,376 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:27:00,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 16:27:00,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494634914] [2021-11-07 16:27:00,376 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:27:00,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:27:00,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:27:00,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:27:00,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:27:00,377 INFO L87 Difference]: Start difference. First operand 12728 states and 17754 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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 16:27:02,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:27:09,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:27:09,371 INFO L93 Difference]: Finished difference Result 31916 states and 44692 transitions. [2021-11-07 16:27:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:27:09,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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 197 [2021-11-07 16:27:09,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:27:09,399 INFO L225 Difference]: With dead ends: 31916 [2021-11-07 16:27:09,400 INFO L226 Difference]: Without dead ends: 19308 [2021-11-07 16:27:09,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 171.98ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:27:09,416 INFO L933 BasicCegarLoop]: 2773 mSDtfsCounter, 3355 mSDsluCounter, 5387 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 82 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7626.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3355 SdHoareTripleChecker+Valid, 8160 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.84ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7976.57ms IncrementalHoareTripleChecker+Time [2021-11-07 16:27:09,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3355 Valid, 8160 Invalid, 253 Unknown, 0 Unchecked, 7.84ms Time], IncrementalHoareTripleChecker [82 Valid, 170 Invalid, 1 Unknown, 0 Unchecked, 7976.57ms Time] [2021-11-07 16:27:09,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19308 states. [2021-11-07 16:27:10,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19308 to 19228. [2021-11-07 16:27:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19228 states, 19221 states have (on average 1.387128661359971) internal successors, (26662), 19227 states have internal predecessors, (26662), 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 16:27:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19228 states to 19228 states and 26662 transitions. [2021-11-07 16:27:10,481 INFO L78 Accepts]: Start accepts. Automaton has 19228 states and 26662 transitions. Word has length 197 [2021-11-07 16:27:10,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:27:10,498 INFO L470 AbstractCegarLoop]: Abstraction has 19228 states and 26662 transitions. [2021-11-07 16:27:10,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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 16:27:10,498 INFO L276 IsEmpty]: Start isEmpty. Operand 19228 states and 26662 transitions. [2021-11-07 16:27:10,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-07 16:27:10,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:27:10,520 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:27:10,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-07 16:27:10,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:27:10,721 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:27:10,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:27:10,721 INFO L85 PathProgramCache]: Analyzing trace with hash 284399362, now seen corresponding path program 1 times [2021-11-07 16:27:10,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:27:10,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202666954] [2021-11-07 16:27:10,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:27:10,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:27:10,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:27:10,728 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:27:10,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 16:27:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:27:19,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 3993 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 16:27:19,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:27:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-07 16:27:20,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:27:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-07 16:27:20,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:27:20,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202666954] [2021-11-07 16:27:20,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202666954] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:27:20,353 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:27:20,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 16:27:20,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293167710] [2021-11-07 16:27:20,353 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:27:20,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:27:20,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:27:20,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:27:20,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:27:20,354 INFO L87 Difference]: Start difference. First operand 19228 states and 26662 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 16:27:23,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:27:23,603 INFO L93 Difference]: Finished difference Result 34026 states and 47709 transitions. [2021-11-07 16:27:23,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:27:23,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 217 [2021-11-07 16:27:23,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:27:23,652 INFO L225 Difference]: With dead ends: 34026 [2021-11-07 16:27:23,653 INFO L226 Difference]: Without dead ends: 34016 [2021-11-07 16:27:23,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 160.64ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:27:23,662 INFO L933 BasicCegarLoop]: 4666 mSDtfsCounter, 2075 mSDsluCounter, 5148 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1628.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 9814 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.67ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1714.39ms IncrementalHoareTripleChecker+Time [2021-11-07 16:27:23,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2075 Valid, 9814 Invalid, 81 Unknown, 0 Unchecked, 5.67ms Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1714.39ms Time] [2021-11-07 16:27:23,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34016 states. [2021-11-07 16:27:24,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34016 to 19218. [2021-11-07 16:27:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19218 states, 19216 states have (on average 1.3851477935054122) internal successors, (26617), 19217 states have internal predecessors, (26617), 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 16:27:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19218 states to 19218 states and 26617 transitions. [2021-11-07 16:27:24,859 INFO L78 Accepts]: Start accepts. Automaton has 19218 states and 26617 transitions. Word has length 217 [2021-11-07 16:27:24,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:27:24,860 INFO L470 AbstractCegarLoop]: Abstraction has 19218 states and 26617 transitions. [2021-11-07 16:27:24,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 16:27:24,860 INFO L276 IsEmpty]: Start isEmpty. Operand 19218 states and 26617 transitions. [2021-11-07 16:27:24,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-07 16:27:24,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:27:24,879 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:27:24,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 16:27:25,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:27:25,092 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:27:25,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:27:25,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2059051649, now seen corresponding path program 1 times [2021-11-07 16:27:25,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:27:25,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240685669] [2021-11-07 16:27:25,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:27:25,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:27:25,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:27:25,099 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:27:25,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 16:27:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:27:33,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 4144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 16:27:33,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:27:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 16:27:35,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:27:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 16:27:36,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:27:36,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240685669] [2021-11-07 16:27:36,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240685669] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:27:36,746 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:27:36,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 16:27:36,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097704112] [2021-11-07 16:27:36,747 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:27:36,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 16:27:36,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:27:36,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 16:27:36,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 16:27:36,748 INFO L87 Difference]: Start difference. First operand 19218 states and 26617 transitions. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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 16:27:39,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:27:45,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:27:45,383 INFO L93 Difference]: Finished difference Result 55486 states and 76599 transitions. [2021-11-07 16:27:45,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 16:27:45,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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 233 [2021-11-07 16:27:45,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:27:45,445 INFO L225 Difference]: With dead ends: 55486 [2021-11-07 16:27:45,446 INFO L226 Difference]: Without dead ends: 36388 [2021-11-07 16:27:45,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1095.22ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 16:27:45,476 INFO L933 BasicCegarLoop]: 4876 mSDtfsCounter, 11600 mSDsluCounter, 14563 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5888.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11600 SdHoareTripleChecker+Valid, 19439 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.71ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6093.38ms IncrementalHoareTripleChecker+Time [2021-11-07 16:27:45,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11600 Valid, 19439 Invalid, 54 Unknown, 0 Unchecked, 15.71ms Time], IncrementalHoareTripleChecker [13 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 6093.38ms Time] [2021-11-07 16:27:45,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36388 states. [2021-11-07 16:27:46,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36388 to 19234. [2021-11-07 16:27:46,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19234 states, 19232 states have (on average 1.3848273710482528) internal successors, (26633), 19233 states have internal predecessors, (26633), 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 16:27:46,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19234 states to 19234 states and 26633 transitions. [2021-11-07 16:27:46,781 INFO L78 Accepts]: Start accepts. Automaton has 19234 states and 26633 transitions. Word has length 233 [2021-11-07 16:27:46,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:27:46,782 INFO L470 AbstractCegarLoop]: Abstraction has 19234 states and 26633 transitions. [2021-11-07 16:27:46,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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 16:27:46,782 INFO L276 IsEmpty]: Start isEmpty. Operand 19234 states and 26633 transitions. [2021-11-07 16:27:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-07 16:27:46,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:27:46,807 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:27:46,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 16:27:47,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:27:47,028 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:27:47,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:27:47,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1974945632, now seen corresponding path program 1 times [2021-11-07 16:27:47,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:27:47,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512238633] [2021-11-07 16:27:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:27:47,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:27:47,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:27:47,034 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:27:47,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 16:27:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:27:56,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 4205 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:27:56,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:27:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 16:27:57,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:27:59,601 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 16:27:59,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:27:59,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512238633] [2021-11-07 16:27:59,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512238633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:27:59,602 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:27:59,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 16:27:59,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715107172] [2021-11-07 16:27:59,602 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:27:59,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:27:59,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:27:59,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:27:59,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:27:59,603 INFO L87 Difference]: Start difference. First operand 19234 states and 26633 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 16:28:06,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:28:06,820 INFO L93 Difference]: Finished difference Result 71872 states and 100004 transitions. [2021-11-07 16:28:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:28:06,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 256 [2021-11-07 16:28:06,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:28:06,899 INFO L225 Difference]: With dead ends: 71872 [2021-11-07 16:28:06,899 INFO L226 Difference]: Without dead ends: 52758 [2021-11-07 16:28:06,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 177.79ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:28:06,928 INFO L933 BasicCegarLoop]: 4765 mSDtfsCounter, 4407 mSDsluCounter, 7348 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4047.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4407 SdHoareTripleChecker+Valid, 12113 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.30ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4162.72ms IncrementalHoareTripleChecker+Time [2021-11-07 16:28:06,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4407 Valid, 12113 Invalid, 100 Unknown, 0 Unchecked, 9.30ms Time], IncrementalHoareTripleChecker [22 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 4162.72ms Time] [2021-11-07 16:28:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52758 states. [2021-11-07 16:28:08,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52758 to 19698. [2021-11-07 16:28:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19698 states, 19696 states have (on average 1.3822603574329813) internal successors, (27225), 19697 states have internal predecessors, (27225), 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 16:28:08,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19698 states to 19698 states and 27225 transitions. [2021-11-07 16:28:08,279 INFO L78 Accepts]: Start accepts. Automaton has 19698 states and 27225 transitions. Word has length 256 [2021-11-07 16:28:08,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:28:08,280 INFO L470 AbstractCegarLoop]: Abstraction has 19698 states and 27225 transitions. [2021-11-07 16:28:08,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 16:28:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 19698 states and 27225 transitions. [2021-11-07 16:28:08,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-07 16:28:08,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:28:08,295 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:28:08,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 16:28:08,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:28:08,498 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:28:08,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:28:08,499 INFO L85 PathProgramCache]: Analyzing trace with hash -278364029, now seen corresponding path program 1 times [2021-11-07 16:28:08,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:28:08,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296978791] [2021-11-07 16:28:08,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:28:08,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:28:08,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:28:08,507 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:28:08,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 16:28:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:28:17,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 4241 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 16:28:18,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:28:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 16:28:19,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:28:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 16:28:21,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:28:21,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296978791] [2021-11-07 16:28:21,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296978791] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:28:21,868 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:28:21,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 16:28:21,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186375061] [2021-11-07 16:28:21,869 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:28:21,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:28:21,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:28:21,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:28:21,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:28:21,869 INFO L87 Difference]: Start difference. First operand 19698 states and 27225 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 16:28:30,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:28:30,545 INFO L93 Difference]: Finished difference Result 76864 states and 106404 transitions. [2021-11-07 16:28:30,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:28:30,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 262 [2021-11-07 16:28:30,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:28:30,635 INFO L225 Difference]: With dead ends: 76864 [2021-11-07 16:28:30,635 INFO L226 Difference]: Without dead ends: 57286 [2021-11-07 16:28:30,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 158.16ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:28:30,660 INFO L933 BasicCegarLoop]: 6408 mSDtfsCounter, 5073 mSDsluCounter, 7525 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5206.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5073 SdHoareTripleChecker+Valid, 13933 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.74ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5277.78ms IncrementalHoareTripleChecker+Time [2021-11-07 16:28:30,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5073 Valid, 13933 Invalid, 57 Unknown, 0 Unchecked, 9.74ms Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 5277.78ms Time] [2021-11-07 16:28:30,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57286 states. [2021-11-07 16:28:32,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57286 to 22914. [2021-11-07 16:28:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22914 states, 22912 states have (on average 1.3708537011173185) internal successors, (31409), 22913 states have internal predecessors, (31409), 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 16:28:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22914 states to 22914 states and 31409 transitions. [2021-11-07 16:28:32,483 INFO L78 Accepts]: Start accepts. Automaton has 22914 states and 31409 transitions. Word has length 262 [2021-11-07 16:28:32,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:28:32,483 INFO L470 AbstractCegarLoop]: Abstraction has 22914 states and 31409 transitions. [2021-11-07 16:28:32,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 16:28:32,484 INFO L276 IsEmpty]: Start isEmpty. Operand 22914 states and 31409 transitions. [2021-11-07 16:28:32,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-07 16:28:32,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:28:32,504 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:28:32,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 16:28:32,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:28:32,720 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:28:32,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:28:32,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1288393921, now seen corresponding path program 1 times [2021-11-07 16:28:32,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:28:32,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730778899] [2021-11-07 16:28:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:28:32,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:28:32,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:28:32,727 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:28:32,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 16:28:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:28:42,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 4241 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 16:28:42,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:28:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-07 16:28:51,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:28:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-07 16:28:59,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:28:59,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730778899] [2021-11-07 16:28:59,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730778899] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:28:59,429 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:28:59,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-11-07 16:28:59,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687386442] [2021-11-07 16:28:59,429 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:28:59,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 16:28:59,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:28:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 16:28:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-11-07 16:28:59,430 INFO L87 Difference]: Start difference. First operand 22914 states and 31409 transitions. Second operand has 20 states, 20 states have (on average 13.5) internal successors, (270), 20 states have internal predecessors, (270), 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 16:29:01,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:30:19,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:30:19,547 INFO L93 Difference]: Finished difference Result 154405 states and 213802 transitions. [2021-11-07 16:30:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-07 16:30:19,549 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.5) internal successors, (270), 20 states have internal predecessors, (270), 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 262 [2021-11-07 16:30:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:30:19,876 INFO L225 Difference]: With dead ends: 154405 [2021-11-07 16:30:19,876 INFO L226 Difference]: Without dead ends: 131611 [2021-11-07 16:30:19,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 36063.73ms TimeCoverageRelationStatistics Valid=1156, Invalid=2876, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 16:30:19,942 INFO L933 BasicCegarLoop]: 6068 mSDtfsCounter, 79654 mSDsluCounter, 41404 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 242 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34998.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79654 SdHoareTripleChecker+Valid, 47472 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 128.63ms SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36391.81ms IncrementalHoareTripleChecker+Time [2021-11-07 16:30:19,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79654 Valid, 47472 Invalid, 1365 Unknown, 0 Unchecked, 128.63ms Time], IncrementalHoareTripleChecker [242 Valid, 1122 Invalid, 1 Unknown, 0 Unchecked, 36391.81ms Time] [2021-11-07 16:30:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131611 states. [2021-11-07 16:30:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131611 to 23050. [2021-11-07 16:30:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23050 states, 23048 states have (on average 1.3686653939604303) internal successors, (31545), 23049 states have internal predecessors, (31545), 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 16:30:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23050 states to 23050 states and 31545 transitions. [2021-11-07 16:30:23,912 INFO L78 Accepts]: Start accepts. Automaton has 23050 states and 31545 transitions. Word has length 262 [2021-11-07 16:30:23,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:30:23,913 INFO L470 AbstractCegarLoop]: Abstraction has 23050 states and 31545 transitions. [2021-11-07 16:30:23,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.5) internal successors, (270), 20 states have internal predecessors, (270), 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 16:30:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 23050 states and 31545 transitions. [2021-11-07 16:30:23,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-07 16:30:23,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:30:23,933 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:30:24,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-07 16:30:24,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 16:30:24,156 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 16:30:24,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:30:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash 271252464, now seen corresponding path program 1 times [2021-11-07 16:30:24,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 16:30:24,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927420894] [2021-11-07 16:30:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:30:24,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 16:30:24,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 16:30:24,164 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 16:30:24,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 16:30:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:30:34,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 4275 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 16:30:34,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:30:37,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 11 [2021-11-07 16:30:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 16:30:51,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:30:59,728 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 16:30:59,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 51 [2021-11-07 16:31:01,920 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 16:31:01,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 54 [2021-11-07 16:31:02,231 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-07 16:31:02,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 49 [2021-11-07 16:31:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 16:31:07,037 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 16:31:07,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927420894] [2021-11-07 16:31:07,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927420894] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 16:31:07,038 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:31:07,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 15 [2021-11-07 16:31:07,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258441590] [2021-11-07 16:31:07,038 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 16:31:07,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 16:31:07,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 16:31:07,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 16:31:07,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=169, Unknown=4, NotChecked=0, Total=210 [2021-11-07 16:31:07,039 INFO L87 Difference]: Start difference. First operand 23050 states and 31545 transitions. Second operand has 15 states, 15 states have (on average 15.8) internal successors, (237), 15 states have internal predecessors, (237), 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 16:31:09,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:31:12,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:31:14,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:31:34,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:31:45,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:31:53,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:31:56,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:31:57,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:06,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:08,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:11,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:14,455 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:17,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:19,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:28,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:37,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:41,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:44,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:46,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:49,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:56,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:32:59,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:33:02,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:33:06,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:33:08,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15