./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-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.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 cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 16:18:18,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:18:18,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:18:18,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:18:18,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:18:18,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:18:18,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:18:18,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:18:18,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:18:18,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:18:18,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:18:18,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:18:18,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:18:18,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:18:18,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:18:18,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:18:18,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:18:18,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:18:18,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:18:18,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:18:18,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:18:18,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:18:18,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:18:18,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:18:18,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:18:18,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:18:18,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:18:18,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:18:18,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:18:18,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:18:18,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:18:18,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:18:18,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:18:18,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:18:18,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:18:18,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:18:18,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:18:18,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:18:18,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:18:18,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:18:18,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:18:18,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:18:18,285 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:18:18,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:18:18,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:18:18,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:18:18,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:18:18,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:18:18,292 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:18:18,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:18:18,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:18:18,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:18:18,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:18:18,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:18:18,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:18:18,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:18:18,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:18:18,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:18:18,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:18:18,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:18:18,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:18:18,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:18:18,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:18:18,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:18:18,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:18:18,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:18:18,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:18:18,295 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:18:18,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:18:18,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:18:18,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:18:18,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2021-11-06 16:18:18,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:18:18,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:18:18,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:18:18,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:18:18,533 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:18:18,534 INFO L432 ainManager$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-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-06 16:18:18,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33cb8dbe/a7ca101774a0415b94f6d26db93c4daa/FLAG9933b96a7 [2021-11-06 16:18:19,122 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:18:19,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-06 16:18:19,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33cb8dbe/a7ca101774a0415b94f6d26db93c4daa/FLAG9933b96a7 [2021-11-06 16:18:19,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33cb8dbe/a7ca101774a0415b94f6d26db93c4daa [2021-11-06 16:18:19,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:18:19,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:18:19,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:18:19,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:18:19,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:18:19,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:18:19" (1/1) ... [2021-11-06 16:18:19,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df298d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:19, skipping insertion in model container [2021-11-06 16:18:19,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:18:19" (1/1) ... [2021-11-06 16:18:19,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:18:19,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:18:20,770 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-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2021-11-06 16:18:20,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:18:20,843 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:18:21,116 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-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2021-11-06 16:18:21,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:18:21,212 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:18:21,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:21 WrapperNode [2021-11-06 16:18:21,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:18:21,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:18:21,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:18:21,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:18:21,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:21" (1/1) ... [2021-11-06 16:18:21,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:21" (1/1) ... [2021-11-06 16:18:22,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:18:22,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:18:22,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:18:22,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:18:22,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:21" (1/1) ... [2021-11-06 16:18:22,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:21" (1/1) ... [2021-11-06 16:18:22,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:21" (1/1) ... [2021-11-06 16:18:22,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:21" (1/1) ... [2021-11-06 16:18:23,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:21" (1/1) ... [2021-11-06 16:18:23,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:21" (1/1) ... [2021-11-06 16:18:24,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:21" (1/1) ... [2021-11-06 16:18:24,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:18:24,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:18:24,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:18:24,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:18:24,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:21" (1/1) ... [2021-11-06 16:18:24,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:18:24,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:18:24,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 16:18:24,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 16:18:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2021-11-06 16:18:24,238 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2021-11-06 16:18:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 16:18:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 16:18:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2021-11-06 16:18:24,239 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2021-11-06 16:18:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2021-11-06 16:18:24,239 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2021-11-06 16:18:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:18:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 16:18:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:18:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:18:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:18:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2021-11-06 16:18:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2021-11-06 16:18:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 16:18:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 16:18:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:18:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2021-11-06 16:18:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2021-11-06 16:18:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:18:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2021-11-06 16:18:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2021-11-06 16:18:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:18:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:18:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 16:18:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 16:18:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2021-11-06 16:18:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2021-11-06 16:18:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 16:18:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:18:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:20:03,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 16:20:03,093 INFO L299 CfgBuilder]: Removed 3636 assume(true) statements. [2021-11-06 16:20:03,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:20:03 BoogieIcfgContainer [2021-11-06 16:20:03,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 16:20:03,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 16:20:03,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 16:20:03,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 16:20:03,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:18:19" (1/3) ... [2021-11-06 16:20:03,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7908bf7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:20:03, skipping insertion in model container [2021-11-06 16:20:03,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:21" (2/3) ... [2021-11-06 16:20:03,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7908bf7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:20:03, skipping insertion in model container [2021-11-06 16:20:03,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:20:03" (3/3) ... [2021-11-06 16:20:03,110 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-06 16:20:03,113 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 16:20:03,113 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-06 16:20:03,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 16:20:03,179 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 16:20:03,179 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-06 16:20:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 9053 states, 8920 states have (on average 1.537780269058296) internal successors, (13717), 8946 states have internal predecessors, (13717), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-06 16:20:03,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-06 16:20:03,283 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:20:03,284 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:20:03,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:20:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:20:03,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1693502438, now seen corresponding path program 1 times [2021-11-06 16:20:03,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:20:03,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305556210] [2021-11-06 16:20:03,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:03,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:20:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:20:03,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:20:03,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305556210] [2021-11-06 16:20:03,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305556210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:20:03,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:20:03,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:20:03,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261571997] [2021-11-06 16:20:03,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 16:20:03,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:20:03,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 16:20:03,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:20:03,712 INFO L87 Difference]: Start difference. First operand has 9053 states, 8920 states have (on average 1.537780269058296) internal successors, (13717), 8946 states have internal predecessors, (13717), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:03,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:20:03,934 INFO L93 Difference]: Finished difference Result 18102 states and 27928 transitions. [2021-11-06 16:20:03,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 16:20:03,935 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-06 16:20:03,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:20:03,975 INFO L225 Difference]: With dead ends: 18102 [2021-11-06 16:20:03,976 INFO L226 Difference]: Without dead ends: 9044 [2021-11-06 16:20:04,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:20:04,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9044 states. [2021-11-06 16:20:04,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9044 to 9044. [2021-11-06 16:20:04,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9044 states, 8912 states have (on average 1.5263689407540395) internal successors, (13603), 8937 states have internal predecessors, (13603), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-06 16:20:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9044 states to 9044 states and 13811 transitions. [2021-11-06 16:20:04,242 INFO L78 Accepts]: Start accepts. Automaton has 9044 states and 13811 transitions. Word has length 156 [2021-11-06 16:20:04,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:20:04,242 INFO L470 AbstractCegarLoop]: Abstraction has 9044 states and 13811 transitions. [2021-11-06 16:20:04,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:04,243 INFO L276 IsEmpty]: Start isEmpty. Operand 9044 states and 13811 transitions. [2021-11-06 16:20:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-06 16:20:04,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:20:04,245 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:20:04,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 16:20:04,246 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:20:04,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:20:04,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1193637878, now seen corresponding path program 1 times [2021-11-06 16:20:04,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:20:04,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086795181] [2021-11-06 16:20:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:04,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:20:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:20:04,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:20:04,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086795181] [2021-11-06 16:20:04,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086795181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:20:04,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:20:04,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:20:04,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904693279] [2021-11-06 16:20:04,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:20:04,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:20:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:20:04,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:20:04,455 INFO L87 Difference]: Start difference. First operand 9044 states and 13811 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:04,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:20:04,906 INFO L93 Difference]: Finished difference Result 26683 states and 40840 transitions. [2021-11-06 16:20:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:20:04,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-06 16:20:04,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:20:04,979 INFO L225 Difference]: With dead ends: 26683 [2021-11-06 16:20:04,980 INFO L226 Difference]: Without dead ends: 17777 [2021-11-06 16:20:05,012 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:20:05,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17777 states. [2021-11-06 16:20:05,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17777 to 17741. [2021-11-06 16:20:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17741 states, 17499 states have (on average 1.5296874107091833) internal successors, (26768), 17530 states have internal predecessors, (26768), 206 states have call successors, (206), 16 states have call predecessors, (206), 16 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-06 16:20:05,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17741 states to 17741 states and 27180 transitions. [2021-11-06 16:20:05,354 INFO L78 Accepts]: Start accepts. Automaton has 17741 states and 27180 transitions. Word has length 156 [2021-11-06 16:20:05,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:20:05,356 INFO L470 AbstractCegarLoop]: Abstraction has 17741 states and 27180 transitions. [2021-11-06 16:20:05,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:05,360 INFO L276 IsEmpty]: Start isEmpty. Operand 17741 states and 27180 transitions. [2021-11-06 16:20:05,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-06 16:20:05,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:20:05,366 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:20:05,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 16:20:05,366 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:20:05,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:20:05,372 INFO L85 PathProgramCache]: Analyzing trace with hash -857498354, now seen corresponding path program 1 times [2021-11-06 16:20:05,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:20:05,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046416412] [2021-11-06 16:20:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:05,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:20:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:20:05,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:20:05,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046416412] [2021-11-06 16:20:05,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046416412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:20:05,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:20:05,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:20:05,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296167347] [2021-11-06 16:20:05,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:20:05,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:20:05,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:20:05,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:20:05,561 INFO L87 Difference]: Start difference. First operand 17741 states and 27180 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:05,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:20:05,806 INFO L93 Difference]: Finished difference Result 35346 states and 54191 transitions. [2021-11-06 16:20:05,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:20:05,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-06 16:20:05,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:20:05,853 INFO L225 Difference]: With dead ends: 35346 [2021-11-06 16:20:05,853 INFO L226 Difference]: Without dead ends: 17743 [2021-11-06 16:20:05,894 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:20:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17743 states. [2021-11-06 16:20:06,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17743 to 17742. [2021-11-06 16:20:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17742 states, 17500 states have (on average 1.5296571428571428) internal successors, (26769), 17531 states have internal predecessors, (26769), 206 states have call successors, (206), 16 states have call predecessors, (206), 16 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-06 16:20:06,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17742 states to 17742 states and 27181 transitions. [2021-11-06 16:20:06,213 INFO L78 Accepts]: Start accepts. Automaton has 17742 states and 27181 transitions. Word has length 163 [2021-11-06 16:20:06,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:20:06,214 INFO L470 AbstractCegarLoop]: Abstraction has 17742 states and 27181 transitions. [2021-11-06 16:20:06,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:06,214 INFO L276 IsEmpty]: Start isEmpty. Operand 17742 states and 27181 transitions. [2021-11-06 16:20:06,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-06 16:20:06,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:20:06,218 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:20:06,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 16:20:06,218 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:20:06,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:20:06,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1755321742, now seen corresponding path program 1 times [2021-11-06 16:20:06,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:20:06,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897490605] [2021-11-06 16:20:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:06,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:20:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:20:06,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:20:06,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897490605] [2021-11-06 16:20:06,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897490605] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:20:06,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095927033] [2021-11-06 16:20:06,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:06,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:20:06,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:20:06,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:20:06,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 16:20:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:07,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 16:20:07,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:20:07,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 16:20:07,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095927033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:20:07,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:20:07,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 16:20:07,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839629723] [2021-11-06 16:20:07,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:20:07,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:20:07,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:20:07,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:20:07,835 INFO L87 Difference]: Start difference. First operand 17742 states and 27181 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:08,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:20:08,595 INFO L93 Difference]: Finished difference Result 52911 states and 81161 transitions. [2021-11-06 16:20:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:20:08,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2021-11-06 16:20:08,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:20:08,678 INFO L225 Difference]: With dead ends: 52911 [2021-11-06 16:20:08,678 INFO L226 Difference]: Without dead ends: 35303 [2021-11-06 16:20:08,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:20:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35303 states. [2021-11-06 16:20:09,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35303 to 35247. [2021-11-06 16:20:09,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35247 states, 34783 states have (on average 1.5308052784406176) internal successors, (53246), 34826 states have internal predecessors, (53246), 412 states have call successors, (412), 32 states have call predecessors, (412), 32 states have return successors, (412), 400 states have call predecessors, (412), 412 states have call successors, (412) [2021-11-06 16:20:09,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35247 states to 35247 states and 54070 transitions. [2021-11-06 16:20:09,312 INFO L78 Accepts]: Start accepts. Automaton has 35247 states and 54070 transitions. Word has length 165 [2021-11-06 16:20:09,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:20:09,313 INFO L470 AbstractCegarLoop]: Abstraction has 35247 states and 54070 transitions. [2021-11-06 16:20:09,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:09,313 INFO L276 IsEmpty]: Start isEmpty. Operand 35247 states and 54070 transitions. [2021-11-06 16:20:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-06 16:20:09,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:20:09,320 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:20:09,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 16:20:09,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:20:09,536 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:20:09,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:20:09,536 INFO L85 PathProgramCache]: Analyzing trace with hash 146817921, now seen corresponding path program 1 times [2021-11-06 16:20:09,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:20:09,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096360122] [2021-11-06 16:20:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:09,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:20:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:20:09,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:20:09,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096360122] [2021-11-06 16:20:09,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096360122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:20:09,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:20:09,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:20:09,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954146035] [2021-11-06 16:20:09,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:20:09,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:20:09,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:20:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:20:09,680 INFO L87 Difference]: Start difference. First operand 35247 states and 54070 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 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) [2021-11-06 16:20:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:20:10,434 INFO L93 Difference]: Finished difference Result 96477 states and 148043 transitions. [2021-11-06 16:20:10,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:20:10,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 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 175 [2021-11-06 16:20:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:20:10,767 INFO L225 Difference]: With dead ends: 96477 [2021-11-06 16:20:10,767 INFO L226 Difference]: Without dead ends: 61368 [2021-11-06 16:20:10,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:20:10,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61368 states. [2021-11-06 16:20:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61368 to 61347. [2021-11-06 16:20:12,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61347 states, 60599 states have (on average 1.5313454017393027) internal successors, (92798), 60662 states have internal predecessors, (92798), 664 states have call successors, (664), 64 states have call predecessors, (664), 64 states have return successors, (664), 640 states have call predecessors, (664), 664 states have call successors, (664) [2021-11-06 16:20:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61347 states to 61347 states and 94126 transitions. [2021-11-06 16:20:12,508 INFO L78 Accepts]: Start accepts. Automaton has 61347 states and 94126 transitions. Word has length 175 [2021-11-06 16:20:12,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:20:12,509 INFO L470 AbstractCegarLoop]: Abstraction has 61347 states and 94126 transitions. [2021-11-06 16:20:12,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 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) [2021-11-06 16:20:12,509 INFO L276 IsEmpty]: Start isEmpty. Operand 61347 states and 94126 transitions. [2021-11-06 16:20:12,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-06 16:20:12,514 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:20:12,514 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:20:12,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 16:20:12,514 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:20:12,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:20:12,515 INFO L85 PathProgramCache]: Analyzing trace with hash 731096779, now seen corresponding path program 1 times [2021-11-06 16:20:12,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:20:12,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965600972] [2021-11-06 16:20:12,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:12,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:20:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:20:12,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:20:12,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965600972] [2021-11-06 16:20:12,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965600972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:20:12,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:20:12,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:20:12,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100799362] [2021-11-06 16:20:12,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:20:12,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:20:12,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:20:12,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:20:12,648 INFO L87 Difference]: Start difference. First operand 61347 states and 94126 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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) [2021-11-06 16:20:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:20:15,875 INFO L93 Difference]: Finished difference Result 141459 states and 217017 transitions. [2021-11-06 16:20:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:20:15,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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) Word has length 178 [2021-11-06 16:20:15,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:20:16,201 INFO L225 Difference]: With dead ends: 141459 [2021-11-06 16:20:16,202 INFO L226 Difference]: Without dead ends: 80250 [2021-11-06 16:20:16,267 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:20:16,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80250 states. [2021-11-06 16:20:17,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80250 to 80199. [2021-11-06 16:20:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80199 states, 79145 states have (on average 1.5309116179164823) internal successors, (121164), 79218 states have internal predecessors, (121164), 928 states have call successors, (928), 106 states have call predecessors, (928), 106 states have return successors, (928), 904 states have call predecessors, (928), 928 states have call successors, (928) [2021-11-06 16:20:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80199 states to 80199 states and 123020 transitions. [2021-11-06 16:20:17,621 INFO L78 Accepts]: Start accepts. Automaton has 80199 states and 123020 transitions. Word has length 178 [2021-11-06 16:20:17,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:20:17,622 INFO L470 AbstractCegarLoop]: Abstraction has 80199 states and 123020 transitions. [2021-11-06 16:20:17,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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) [2021-11-06 16:20:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 80199 states and 123020 transitions. [2021-11-06 16:20:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-06 16:20:17,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:20:17,631 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:20:17,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 16:20:17,631 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:20:17,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:20:17,632 INFO L85 PathProgramCache]: Analyzing trace with hash 72115822, now seen corresponding path program 1 times [2021-11-06 16:20:17,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:20:17,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118094414] [2021-11-06 16:20:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:17,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:20:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:20:18,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:20:18,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118094414] [2021-11-06 16:20:18,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118094414] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:20:18,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480593411] [2021-11-06 16:20:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:18,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:20:18,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:20:18,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:20:18,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 16:20:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:19,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 2856 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 16:20:19,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:20:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 16:20:19,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480593411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:20:19,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:20:19,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 16:20:19,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096444072] [2021-11-06 16:20:19,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:20:19,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:20:19,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:20:19,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:20:19,472 INFO L87 Difference]: Start difference. First operand 80199 states and 123020 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:21,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:20:21,066 INFO L93 Difference]: Finished difference Result 225863 states and 346714 transitions. [2021-11-06 16:20:21,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:20:21,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 [2021-11-06 16:20:21,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:20:21,483 INFO L225 Difference]: With dead ends: 225863 [2021-11-06 16:20:21,484 INFO L226 Difference]: Without dead ends: 145802 [2021-11-06 16:20:21,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:20:21,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145802 states. [2021-11-06 16:20:23,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145802 to 80215. [2021-11-06 16:20:23,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80215 states, 79161 states have (on average 1.5308043102032567) internal successors, (121180), 79234 states have internal predecessors, (121180), 928 states have call successors, (928), 106 states have call predecessors, (928), 106 states have return successors, (928), 904 states have call predecessors, (928), 928 states have call successors, (928) [2021-11-06 16:20:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80215 states to 80215 states and 123036 transitions. [2021-11-06 16:20:23,630 INFO L78 Accepts]: Start accepts. Automaton has 80215 states and 123036 transitions. Word has length 197 [2021-11-06 16:20:23,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:20:23,631 INFO L470 AbstractCegarLoop]: Abstraction has 80215 states and 123036 transitions. [2021-11-06 16:20:23,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:23,632 INFO L276 IsEmpty]: Start isEmpty. Operand 80215 states and 123036 transitions. [2021-11-06 16:20:23,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-06 16:20:23,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:20:23,641 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:20:23,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 16:20:23,865 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,SelfDestructingSolverStorable6 [2021-11-06 16:20:23,866 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:20:23,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:20:23,866 INFO L85 PathProgramCache]: Analyzing trace with hash -778676785, now seen corresponding path program 1 times [2021-11-06 16:20:23,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:20:23,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241646849] [2021-11-06 16:20:23,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:23,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:20:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:20:24,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:20:24,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241646849] [2021-11-06 16:20:24,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241646849] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:20:24,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495138701] [2021-11-06 16:20:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:24,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:20:24,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:20:24,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:20:24,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 16:20:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:25,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 16:20:25,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:20:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:20:25,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495138701] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:20:25,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 16:20:25,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 16:20:25,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466896181] [2021-11-06 16:20:25,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:20:25,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:20:25,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:20:25,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:20:25,470 INFO L87 Difference]: Start difference. First operand 80215 states and 123036 transitions. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:26,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:20:26,808 INFO L93 Difference]: Finished difference Result 160316 states and 245932 transitions. [2021-11-06 16:20:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 16:20:26,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 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 199 [2021-11-06 16:20:26,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:20:27,111 INFO L225 Difference]: With dead ends: 160316 [2021-11-06 16:20:27,112 INFO L226 Difference]: Without dead ends: 80239 [2021-11-06 16:20:27,225 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:20:27,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80239 states. [2021-11-06 16:20:28,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80239 to 80231. [2021-11-06 16:20:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80231 states, 79177 states have (on average 1.5306970458592772) internal successors, (121196), 79250 states have internal predecessors, (121196), 928 states have call successors, (928), 106 states have call predecessors, (928), 106 states have return successors, (928), 904 states have call predecessors, (928), 928 states have call successors, (928) [2021-11-06 16:20:28,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80231 states to 80231 states and 123052 transitions. [2021-11-06 16:20:28,796 INFO L78 Accepts]: Start accepts. Automaton has 80231 states and 123052 transitions. Word has length 199 [2021-11-06 16:20:28,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:20:28,796 INFO L470 AbstractCegarLoop]: Abstraction has 80231 states and 123052 transitions. [2021-11-06 16:20:28,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:28,797 INFO L276 IsEmpty]: Start isEmpty. Operand 80231 states and 123052 transitions. [2021-11-06 16:20:28,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-06 16:20:28,804 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:20:28,804 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:20:28,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-06 16:20:29,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:20:29,028 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:20:29,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:20:29,028 INFO L85 PathProgramCache]: Analyzing trace with hash 910082355, now seen corresponding path program 2 times [2021-11-06 16:20:29,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:20:29,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192398387] [2021-11-06 16:20:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:29,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:20:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:20:29,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:20:29,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192398387] [2021-11-06 16:20:29,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192398387] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:20:29,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142224362] [2021-11-06 16:20:29,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 16:20:29,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:20:29,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:20:29,262 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:20:29,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 16:20:31,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 16:20:31,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 16:20:31,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-06 16:20:31,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:20:32,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 16:20:32,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142224362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:20:32,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:20:32,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-06 16:20:32,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968040438] [2021-11-06 16:20:32,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:20:32,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:20:32,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:20:32,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 16:20:32,676 INFO L87 Difference]: Start difference. First operand 80231 states and 123052 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:33,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:20:33,992 INFO L93 Difference]: Finished difference Result 160455 states and 246127 transitions. [2021-11-06 16:20:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:20:33,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 201 [2021-11-06 16:20:33,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:20:34,141 INFO L225 Difference]: With dead ends: 160455 [2021-11-06 16:20:34,142 INFO L226 Difference]: Without dead ends: 80263 [2021-11-06 16:20:34,226 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 16:20:34,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80263 states. [2021-11-06 16:20:35,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80263 to 80263. [2021-11-06 16:20:35,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80263 states, 79209 states have (on average 1.5304826471739323) internal successors, (121228), 79282 states have internal predecessors, (121228), 928 states have call successors, (928), 106 states have call predecessors, (928), 106 states have return successors, (928), 904 states have call predecessors, (928), 928 states have call successors, (928) [2021-11-06 16:20:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80263 states to 80263 states and 123084 transitions. [2021-11-06 16:20:35,709 INFO L78 Accepts]: Start accepts. Automaton has 80263 states and 123084 transitions. Word has length 201 [2021-11-06 16:20:35,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:20:35,710 INFO L470 AbstractCegarLoop]: Abstraction has 80263 states and 123084 transitions. [2021-11-06 16:20:35,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:35,710 INFO L276 IsEmpty]: Start isEmpty. Operand 80263 states and 123084 transitions. [2021-11-06 16:20:35,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-06 16:20:35,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:20:35,716 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:20:35,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 16:20:35,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:20:35,944 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:20:35,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:20:35,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1279570771, now seen corresponding path program 1 times [2021-11-06 16:20:35,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:20:35,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655867568] [2021-11-06 16:20:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:35,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:20:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-06 16:20:36,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:20:36,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655867568] [2021-11-06 16:20:36,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655867568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:20:36,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105897629] [2021-11-06 16:20:36,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:36,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:20:36,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:20:36,197 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:20:36,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 16:20:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:37,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 16:20:37,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:20:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-06 16:20:37,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105897629] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:20:37,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 16:20:37,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 16:20:37,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720144389] [2021-11-06 16:20:37,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 16:20:37,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:20:37,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 16:20:37,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 16:20:37,785 INFO L87 Difference]: Start difference. First operand 80263 states and 123084 transitions. Second operand has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:38,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:20:38,970 INFO L93 Difference]: Finished difference Result 160380 states and 245996 transitions. [2021-11-06 16:20:38,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:20:38,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 0 states have call successors, (0), 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 [2021-11-06 16:20:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:20:39,181 INFO L225 Difference]: With dead ends: 160380 [2021-11-06 16:20:39,181 INFO L226 Difference]: Without dead ends: 80287 [2021-11-06 16:20:39,266 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 16:20:39,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80287 states. [2021-11-06 16:20:40,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80287 to 80279. [2021-11-06 16:20:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80279 states, 79225 states have (on average 1.530375512780057) internal successors, (121244), 79298 states have internal predecessors, (121244), 928 states have call successors, (928), 106 states have call predecessors, (928), 106 states have return successors, (928), 904 states have call predecessors, (928), 928 states have call successors, (928) [2021-11-06 16:20:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80279 states to 80279 states and 123100 transitions. [2021-11-06 16:20:40,657 INFO L78 Accepts]: Start accepts. Automaton has 80279 states and 123100 transitions. Word has length 233 [2021-11-06 16:20:40,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:20:40,657 INFO L470 AbstractCegarLoop]: Abstraction has 80279 states and 123100 transitions. [2021-11-06 16:20:40,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:40,658 INFO L276 IsEmpty]: Start isEmpty. Operand 80279 states and 123100 transitions. [2021-11-06 16:20:40,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-06 16:20:40,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:20:40,664 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:20:40,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-06 16:20:40,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 16:20:40,880 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:20:40,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:20:40,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1093939785, now seen corresponding path program 2 times [2021-11-06 16:20:40,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:20:40,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737146303] [2021-11-06 16:20:40,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:40,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:20:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-06 16:20:41,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:20:41,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737146303] [2021-11-06 16:20:41,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737146303] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:20:41,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183188642] [2021-11-06 16:20:41,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 16:20:41,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:20:41,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:20:41,363 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:20:41,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 16:20:44,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 16:20:44,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 16:20:44,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 16:20:44,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:20:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-06 16:20:44,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183188642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:20:44,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:20:44,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-06 16:20:44,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534950567] [2021-11-06 16:20:44,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:20:44,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:20:44,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:20:44,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:20:44,495 INFO L87 Difference]: Start difference. First operand 80279 states and 123100 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:45,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:20:45,653 INFO L93 Difference]: Finished difference Result 160524 states and 246167 transitions. [2021-11-06 16:20:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:20:45,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-11-06 16:20:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:20:45,816 INFO L225 Difference]: With dead ends: 160524 [2021-11-06 16:20:45,817 INFO L226 Difference]: Without dead ends: 80281 [2021-11-06 16:20:45,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:20:45,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80281 states. [2021-11-06 16:20:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80281 to 80281. [2021-11-06 16:20:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80281 states, 79227 states have (on average 1.5303621240233758) internal successors, (121246), 79300 states have internal predecessors, (121246), 928 states have call successors, (928), 106 states have call predecessors, (928), 106 states have return successors, (928), 904 states have call predecessors, (928), 928 states have call successors, (928) [2021-11-06 16:20:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80281 states to 80281 states and 123102 transitions. [2021-11-06 16:20:47,331 INFO L78 Accepts]: Start accepts. Automaton has 80281 states and 123102 transitions. Word has length 235 [2021-11-06 16:20:47,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:20:47,332 INFO L470 AbstractCegarLoop]: Abstraction has 80281 states and 123102 transitions. [2021-11-06 16:20:47,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:47,332 INFO L276 IsEmpty]: Start isEmpty. Operand 80281 states and 123102 transitions. [2021-11-06 16:20:47,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-06 16:20:47,338 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:20:47,338 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:20:47,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 16:20:47,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:20:47,564 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:20:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:20:47,564 INFO L85 PathProgramCache]: Analyzing trace with hash 404876693, now seen corresponding path program 1 times [2021-11-06 16:20:47,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:20:47,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967048035] [2021-11-06 16:20:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:47,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:20:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-06 16:20:47,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:20:47,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967048035] [2021-11-06 16:20:47,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967048035] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:20:47,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828444845] [2021-11-06 16:20:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:47,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:20:47,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:20:47,796 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:20:47,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 16:20:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:49,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 16:20:49,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:20:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-06 16:20:49,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828444845] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:20:49,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 16:20:49,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-06 16:20:49,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634969300] [2021-11-06 16:20:49,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 16:20:49,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:20:49,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 16:20:49,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:20:49,584 INFO L87 Difference]: Start difference. First operand 80281 states and 123102 transitions. Second operand has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:50,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:20:50,457 INFO L93 Difference]: Finished difference Result 160414 states and 246030 transitions. [2021-11-06 16:20:50,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 16:20:50,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-11-06 16:20:50,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:20:50,833 INFO L225 Difference]: With dead ends: 160414 [2021-11-06 16:20:50,834 INFO L226 Difference]: Without dead ends: 80305 [2021-11-06 16:20:50,910 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:20:50,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80305 states. [2021-11-06 16:20:51,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80305 to 80297. [2021-11-06 16:20:52,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80297 states, 79243 states have (on average 1.530255038299913) internal successors, (121262), 79316 states have internal predecessors, (121262), 928 states have call successors, (928), 106 states have call predecessors, (928), 106 states have return successors, (928), 904 states have call predecessors, (928), 928 states have call successors, (928) [2021-11-06 16:20:52,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80297 states to 80297 states and 123118 transitions. [2021-11-06 16:20:52,147 INFO L78 Accepts]: Start accepts. Automaton has 80297 states and 123118 transitions. Word has length 237 [2021-11-06 16:20:52,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:20:52,148 INFO L470 AbstractCegarLoop]: Abstraction has 80297 states and 123118 transitions. [2021-11-06 16:20:52,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:52,148 INFO L276 IsEmpty]: Start isEmpty. Operand 80297 states and 123118 transitions. [2021-11-06 16:20:52,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-06 16:20:52,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:20:52,155 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:20:52,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 16:20:52,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:20:52,382 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:20:52,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:20:52,386 INFO L85 PathProgramCache]: Analyzing trace with hash 138641273, now seen corresponding path program 2 times [2021-11-06 16:20:52,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:20:52,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671263824] [2021-11-06 16:20:52,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:20:52,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:20:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:20:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-06 16:20:52,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:20:52,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671263824] [2021-11-06 16:20:52,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671263824] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:20:52,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296934003] [2021-11-06 16:20:52,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 16:20:52,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:20:52,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:20:52,642 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:20:52,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 16:20:57,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 16:20:57,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 16:20:57,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 3084 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 16:20:57,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:20:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-06 16:20:58,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296934003] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:20:58,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 16:20:58,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-11-06 16:20:58,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99524367] [2021-11-06 16:20:58,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 16:20:58,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:20:58,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 16:20:58,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-06 16:20:58,151 INFO L87 Difference]: Start difference. First operand 80297 states and 123118 transitions. Second operand has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:20:59,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:20:59,389 INFO L93 Difference]: Finished difference Result 160446 states and 246062 transitions. [2021-11-06 16:20:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 16:20:59,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 states have internal predecessors, (242), 0 states have call successors, (0), 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 239 [2021-11-06 16:20:59,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:20:59,561 INFO L225 Difference]: With dead ends: 160446 [2021-11-06 16:20:59,562 INFO L226 Difference]: Without dead ends: 80321 [2021-11-06 16:20:59,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-06 16:20:59,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80321 states. [2021-11-06 16:21:00,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80321 to 80313. [2021-11-06 16:21:00,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80313 states, 79259 states have (on average 1.5301479958112012) internal successors, (121278), 79332 states have internal predecessors, (121278), 928 states have call successors, (928), 106 states have call predecessors, (928), 106 states have return successors, (928), 904 states have call predecessors, (928), 928 states have call successors, (928) [2021-11-06 16:21:00,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80313 states to 80313 states and 123134 transitions. [2021-11-06 16:21:00,891 INFO L78 Accepts]: Start accepts. Automaton has 80313 states and 123134 transitions. Word has length 239 [2021-11-06 16:21:00,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:21:00,892 INFO L470 AbstractCegarLoop]: Abstraction has 80313 states and 123134 transitions. [2021-11-06 16:21:00,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:21:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand 80313 states and 123134 transitions. [2021-11-06 16:21:00,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-06 16:21:00,897 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:21:00,898 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:21:00,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 16:21:01,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-06 16:21:01,100 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 16:21:01,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:21:01,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1984440413, now seen corresponding path program 3 times [2021-11-06 16:21:01,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:21:01,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307314596] [2021-11-06 16:21:01,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:21:01,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:21:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:21:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-06 16:21:01,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:21:01,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307314596] [2021-11-06 16:21:01,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307314596] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:21:01,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632196500] [2021-11-06 16:21:01,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 16:21:01,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:21:01,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:21:01,616 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:21:01,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 16:21:44,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-06 16:21:44,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 16:21:44,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-06 16:21:44,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:21:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-06 16:21:45,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632196500] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:21:45,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 16:21:45,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2021-11-06 16:21:45,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173376127] [2021-11-06 16:21:45,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 16:21:45,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:21:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 16:21:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-06 16:21:45,134 INFO L87 Difference]: Start difference. First operand 80313 states and 123134 transitions. Second operand has 10 states, 10 states have (on average 39.3) internal successors, (393), 10 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)