./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 fcb8e130 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-fcb8e13 [2021-11-23 00:35:40,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 00:35:40,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 00:35:40,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 00:35:40,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 00:35:40,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 00:35:40,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 00:35:40,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 00:35:40,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 00:35:40,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 00:35:40,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 00:35:40,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 00:35:40,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 00:35:40,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 00:35:40,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 00:35:40,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 00:35:40,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 00:35:40,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 00:35:40,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 00:35:40,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 00:35:40,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 00:35:40,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 00:35:40,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 00:35:40,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 00:35:40,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 00:35:40,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 00:35:40,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 00:35:40,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 00:35:40,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 00:35:40,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 00:35:40,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 00:35:40,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 00:35:40,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 00:35:40,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 00:35:40,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 00:35:40,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 00:35:40,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 00:35:40,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 00:35:40,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 00:35:40,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 00:35:40,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 00:35:40,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 00:35:40,633 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 00:35:40,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 00:35:40,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 00:35:40,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 00:35:40,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 00:35:40,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 00:35:40,636 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 00:35:40,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 00:35:40,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 00:35:40,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 00:35:40,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 00:35:40,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 00:35:40,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 00:35:40,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 00:35:40,637 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 00:35:40,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 00:35:40,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 00:35:40,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 00:35:40,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 00:35:40,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 00:35:40,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 00:35:40,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 00:35:40,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 00:35:40,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 00:35:40,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 00:35:40,639 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 00:35:40,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 00:35:40,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 00:35:40,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 00:35:40,640 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2021-11-23 00:35:40,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 00:35:40,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 00:35:40,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 00:35:40,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 00:35:40,834 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 00:35:40,834 INFO L432 ainManager$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 [2021-11-23 00:35:40,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cf7e1bab/62a13875aafb424b92e597385b8ff132/FLAGa1cf99eed [2021-11-23 00:35:41,466 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 00:35:41,467 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 [2021-11-23 00:35:41,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cf7e1bab/62a13875aafb424b92e597385b8ff132/FLAGa1cf99eed [2021-11-23 00:35:41,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cf7e1bab/62a13875aafb424b92e597385b8ff132 [2021-11-23 00:35:41,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 00:35:41,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 00:35:41,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 00:35:41,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 00:35:41,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 00:35:41,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:35:41" (1/1) ... [2021-11-23 00:35:41,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46c0690a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:35:41, skipping insertion in model container [2021-11-23 00:35:41,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:35:41" (1/1) ... [2021-11-23 00:35:41,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 00:35:41,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 00:35:43,284 WARN L230 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] [2021-11-23 00:35:43,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:35:43,362 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 00:35:43,643 WARN L230 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] [2021-11-23 00:35:43,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:35:43,740 INFO L208 MainTranslator]: Completed translation [2021-11-23 00:35:43,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:35:43 WrapperNode [2021-11-23 00:35:43,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 00:35:43,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 00:35:43,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 00:35:43,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 00:35:43,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:35:43" (1/1) ... [2021-11-23 00:35:43,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:35:43" (1/1) ... [2021-11-23 00:35:44,795 INFO L137 Inliner]: procedures = 251, calls = 2680, calls flagged for inlining = 503, calls inlined = 1818, statements flattened = 48474 [2021-11-23 00:35:44,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 00:35:44,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 00:35:44,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 00:35:44,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 00:35:44,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:35:43" (1/1) ... [2021-11-23 00:35:44,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:35:43" (1/1) ... [2021-11-23 00:35:45,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:35:43" (1/1) ... [2021-11-23 00:35:45,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:35:43" (1/1) ... [2021-11-23 00:35:45,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:35:43" (1/1) ... [2021-11-23 00:35:46,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:35:43" (1/1) ... [2021-11-23 00:35:46,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:35:43" (1/1) ... [2021-11-23 00:35:46,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 00:35:46,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 00:35:46,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 00:35:46,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 00:35:46,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:35:43" (1/1) ... [2021-11-23 00:35:46,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 00:35:46,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:35:46,272 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) [2021-11-23 00:35:46,415 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 [2021-11-23 00:35:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2021-11-23 00:35:46,443 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2021-11-23 00:35:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 00:35:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 00:35:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2021-11-23 00:35:46,444 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2021-11-23 00:35:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 00:35:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2021-11-23 00:35:46,445 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2021-11-23 00:35:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 00:35:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 00:35:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 00:35:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 00:35:46,445 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2021-11-23 00:35:46,446 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2021-11-23 00:35:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 00:35:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 00:35:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 00:35:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2021-11-23 00:35:46,446 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2021-11-23 00:35:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 00:35:46,446 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2021-11-23 00:35:46,446 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2021-11-23 00:35:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 00:35:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 00:35:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 00:35:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 00:35:46,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 00:35:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2021-11-23 00:35:46,447 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2021-11-23 00:35:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 00:35:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 00:35:46,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 00:35:47,191 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 00:35:47,193 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 00:37:23,551 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 00:37:23,579 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 00:37:23,580 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 00:37:23,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:37:23 BoogieIcfgContainer [2021-11-23 00:37:23,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 00:37:23,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 00:37:23,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 00:37:23,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 00:37:23,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:35:41" (1/3) ... [2021-11-23 00:37:23,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142e21c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:37:23, skipping insertion in model container [2021-11-23 00:37:23,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:35:43" (2/3) ... [2021-11-23 00:37:23,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142e21c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:37:23, skipping insertion in model container [2021-11-23 00:37:23,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:37:23" (3/3) ... [2021-11-23 00:37:23,597 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-23 00:37:23,600 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 00:37:23,601 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-23 00:37:23,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 00:37:23,668 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 [2021-11-23 00:37:23,668 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-23 00:37:23,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 9355 states, 9222 states have (on average 1.5201691607026675) internal successors, (14019), 9248 states have internal predecessors, (14019), 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) [2021-11-23 00:37:23,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-23 00:37:23,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:37:23,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:37:23,788 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)] === [2021-11-23 00:37:23,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:37:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash -747493946, now seen corresponding path program 1 times [2021-11-23 00:37:23,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:37:23,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660819996] [2021-11-23 00:37:23,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:23,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:37:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:37:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:37:24,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:37:24,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660819996] [2021-11-23 00:37:24,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660819996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:37:24,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:37:24,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 00:37:24,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900353944] [2021-11-23 00:37:24,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:37:24,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 00:37:24,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:37:24,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 00:37:24,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 00:37:24,404 INFO L87 Difference]: Start difference. First operand has 9355 states, 9222 states have (on average 1.5201691607026675) internal successors, (14019), 9248 states have internal predecessors, (14019), 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 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:37:24,647 INFO L93 Difference]: Finished difference Result 18686 states and 28512 transitions. [2021-11-23 00:37:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 00:37:24,649 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-23 00:37:24,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:37:24,699 INFO L225 Difference]: With dead ends: 18686 [2021-11-23 00:37:24,699 INFO L226 Difference]: Without dead ends: 9326 [2021-11-23 00:37:24,735 INFO L932 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 [2021-11-23 00:37:24,737 INFO L933 BasicCegarLoop]: 14107 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14107 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:37:24,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:37:24,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9326 states. [2021-11-23 00:37:24,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9326 to 9326. [2021-11-23 00:37:24,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9326 states, 9194 states have (on average 1.5102240591690232) internal successors, (13885), 9219 states have internal predecessors, (13885), 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) [2021-11-23 00:37:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9326 states to 9326 states and 14093 transitions. [2021-11-23 00:37:24,987 INFO L78 Accepts]: Start accepts. Automaton has 9326 states and 14093 transitions. Word has length 158 [2021-11-23 00:37:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:37:24,987 INFO L470 AbstractCegarLoop]: Abstraction has 9326 states and 14093 transitions. [2021-11-23 00:37:24,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 9326 states and 14093 transitions. [2021-11-23 00:37:24,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-23 00:37:24,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:37:24,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:37:24,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 00:37:24,994 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)] === [2021-11-23 00:37:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:37:24,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2012124588, now seen corresponding path program 1 times [2021-11-23 00:37:24,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:37:24,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818688627] [2021-11-23 00:37:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:24,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:37:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:37:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:37:25,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:37:25,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818688627] [2021-11-23 00:37:25,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818688627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:37:25,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:37:25,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 00:37:25,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703684719] [2021-11-23 00:37:25,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:37:25,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:37:25,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:37:25,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:37:25,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:37:25,392 INFO L87 Difference]: Start difference. First operand 9326 states and 14093 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:25,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:37:25,748 INFO L93 Difference]: Finished difference Result 27519 states and 41676 transitions. [2021-11-23 00:37:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:37:25,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-23 00:37:25,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:37:25,826 INFO L225 Difference]: With dead ends: 27519 [2021-11-23 00:37:25,826 INFO L226 Difference]: Without dead ends: 18331 [2021-11-23 00:37:25,854 INFO L932 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 [2021-11-23 00:37:25,855 INFO L933 BasicCegarLoop]: 14192 mSDtfsCounter, 13709 mSDsluCounter, 14025 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13709 SdHoareTripleChecker+Valid, 28217 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:37:25,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13709 Valid, 28217 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:37:25,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18331 states. [2021-11-23 00:37:26,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18331 to 18295. [2021-11-23 00:37:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18295 states, 18053 states have (on average 1.5134326704702818) internal successors, (27322), 18084 states have internal predecessors, (27322), 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) [2021-11-23 00:37:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18295 states to 18295 states and 27734 transitions. [2021-11-23 00:37:26,225 INFO L78 Accepts]: Start accepts. Automaton has 18295 states and 27734 transitions. Word has length 158 [2021-11-23 00:37:26,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:37:26,228 INFO L470 AbstractCegarLoop]: Abstraction has 18295 states and 27734 transitions. [2021-11-23 00:37:26,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:26,228 INFO L276 IsEmpty]: Start isEmpty. Operand 18295 states and 27734 transitions. [2021-11-23 00:37:26,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-23 00:37:26,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:37:26,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:37:26,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 00:37:26,232 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)] === [2021-11-23 00:37:26,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:37:26,233 INFO L85 PathProgramCache]: Analyzing trace with hash 258210058, now seen corresponding path program 1 times [2021-11-23 00:37:26,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:37:26,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645615039] [2021-11-23 00:37:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:26,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:37:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:37:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:37:26,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:37:26,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645615039] [2021-11-23 00:37:26,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645615039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:37:26,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:37:26,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 00:37:26,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213558005] [2021-11-23 00:37:26,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:37:26,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:37:26,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:37:26,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:37:26,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:37:26,522 INFO L87 Difference]: Start difference. First operand 18295 states and 27734 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:37:26,769 INFO L93 Difference]: Finished difference Result 36454 states and 55299 transitions. [2021-11-23 00:37:26,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:37:26,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-11-23 00:37:26,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:37:26,814 INFO L225 Difference]: With dead ends: 36454 [2021-11-23 00:37:26,815 INFO L226 Difference]: Without dead ends: 18297 [2021-11-23 00:37:26,854 INFO L932 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 [2021-11-23 00:37:26,857 INFO L933 BasicCegarLoop]: 14091 mSDtfsCounter, 1 mSDsluCounter, 14088 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 28179 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:37:26,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 28179 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:37:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18297 states. [2021-11-23 00:37:27,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18297 to 18296. [2021-11-23 00:37:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18296 states, 18054 states have (on average 1.513404231749197) internal successors, (27323), 18085 states have internal predecessors, (27323), 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) [2021-11-23 00:37:27,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18296 states to 18296 states and 27735 transitions. [2021-11-23 00:37:27,510 INFO L78 Accepts]: Start accepts. Automaton has 18296 states and 27735 transitions. Word has length 164 [2021-11-23 00:37:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:37:27,511 INFO L470 AbstractCegarLoop]: Abstraction has 18296 states and 27735 transitions. [2021-11-23 00:37:27,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:27,512 INFO L276 IsEmpty]: Start isEmpty. Operand 18296 states and 27735 transitions. [2021-11-23 00:37:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-23 00:37:27,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:37:27,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:37:27,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 00:37:27,516 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)] === [2021-11-23 00:37:27,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:37:27,519 INFO L85 PathProgramCache]: Analyzing trace with hash 641131174, now seen corresponding path program 1 times [2021-11-23 00:37:27,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:37:27,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910417607] [2021-11-23 00:37:27,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:27,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:37:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:37:28,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:37:28,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:37:28,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910417607] [2021-11-23 00:37:28,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910417607] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:37:28,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266861730] [2021-11-23 00:37:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:28,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:37:28,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:37:28,019 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) [2021-11-23 00:37:28,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 00:37:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:37:29,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 4007 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 00:37:29,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:37:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 00:37:29,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 00:37:29,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266861730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:37:29,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 00:37:29,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 00:37:29,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013377304] [2021-11-23 00:37:29,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:37:29,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:37:29,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:37:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:37:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:37:29,661 INFO L87 Difference]: Start difference. First operand 18296 states and 27735 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:30,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:37:30,300 INFO L93 Difference]: Finished difference Result 54573 states and 82823 transitions. [2021-11-23 00:37:30,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:37:30,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-11-23 00:37:30,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:37:30,385 INFO L225 Difference]: With dead ends: 54573 [2021-11-23 00:37:30,385 INFO L226 Difference]: Without dead ends: 36409 [2021-11-23 00:37:30,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:37:30,424 INFO L933 BasicCegarLoop]: 14740 mSDtfsCounter, 13883 mSDsluCounter, 13857 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13883 SdHoareTripleChecker+Valid, 28597 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 00:37:30,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13883 Valid, 28597 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 00:37:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36409 states. [2021-11-23 00:37:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36409 to 36353. [2021-11-23 00:37:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36353 states, 35889 states have (on average 1.5144473236924962) internal successors, (54352), 35932 states have internal predecessors, (54352), 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) [2021-11-23 00:37:31,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36353 states to 36353 states and 55176 transitions. [2021-11-23 00:37:31,109 INFO L78 Accepts]: Start accepts. Automaton has 36353 states and 55176 transitions. Word has length 166 [2021-11-23 00:37:31,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:37:31,110 INFO L470 AbstractCegarLoop]: Abstraction has 36353 states and 55176 transitions. [2021-11-23 00:37:31,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:31,110 INFO L276 IsEmpty]: Start isEmpty. Operand 36353 states and 55176 transitions. [2021-11-23 00:37:31,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-23 00:37:31,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:37:31,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:37:31,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 00:37:31,331 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 [2021-11-23 00:37:31,332 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)] === [2021-11-23 00:37:31,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:37:31,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1396182439, now seen corresponding path program 1 times [2021-11-23 00:37:31,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:37:31,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599976620] [2021-11-23 00:37:31,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:31,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:37:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:37:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:37:31,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:37:31,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599976620] [2021-11-23 00:37:31,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599976620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:37:31,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:37:31,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 00:37:31,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739573792] [2021-11-23 00:37:31,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:37:31,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:37:31,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:37:31,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:37:31,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:37:31,785 INFO L87 Difference]: Start difference. First operand 36353 states and 55176 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) [2021-11-23 00:37:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:37:32,589 INFO L93 Difference]: Finished difference Result 99289 states and 150855 transitions. [2021-11-23 00:37:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:37:32,590 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 [2021-11-23 00:37:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:37:32,743 INFO L225 Difference]: With dead ends: 99289 [2021-11-23 00:37:32,743 INFO L226 Difference]: Without dead ends: 63074 [2021-11-23 00:37:32,803 INFO L932 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 [2021-11-23 00:37:32,805 INFO L933 BasicCegarLoop]: 14346 mSDtfsCounter, 10470 mSDsluCounter, 13915 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10470 SdHoareTripleChecker+Valid, 28261 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:37:32,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10470 Valid, 28261 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:37:32,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63074 states. [2021-11-23 00:37:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63074 to 63051. [2021-11-23 00:37:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63051 states, 62303 states have (on average 1.5168129945588495) internal successors, (94502), 62366 states have internal predecessors, (94502), 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) [2021-11-23 00:37:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63051 states to 63051 states and 95830 transitions. [2021-11-23 00:37:33,974 INFO L78 Accepts]: Start accepts. Automaton has 63051 states and 95830 transitions. Word has length 175 [2021-11-23 00:37:33,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:37:33,975 INFO L470 AbstractCegarLoop]: Abstraction has 63051 states and 95830 transitions. [2021-11-23 00:37:33,975 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) [2021-11-23 00:37:33,975 INFO L276 IsEmpty]: Start isEmpty. Operand 63051 states and 95830 transitions. [2021-11-23 00:37:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-23 00:37:33,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:37:33,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:37:33,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 00:37:33,983 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)] === [2021-11-23 00:37:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:37:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1998413687, now seen corresponding path program 1 times [2021-11-23 00:37:33,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:37:33,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537881567] [2021-11-23 00:37:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:33,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:37:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:37:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:37:34,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:37:34,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537881567] [2021-11-23 00:37:34,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537881567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:37:34,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:37:34,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 00:37:34,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777912248] [2021-11-23 00:37:34,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:37:34,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:37:34,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:37:34,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:37:34,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:37:34,532 INFO L87 Difference]: Start difference. First operand 63051 states and 95830 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:36,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 00:37:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:37:37,738 INFO L93 Difference]: Finished difference Result 145579 states and 221137 transitions. [2021-11-23 00:37:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:37:37,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-11-23 00:37:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:37:38,007 INFO L225 Difference]: With dead ends: 145579 [2021-11-23 00:37:38,007 INFO L226 Difference]: Without dead ends: 82666 [2021-11-23 00:37:38,224 INFO L932 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 [2021-11-23 00:37:38,226 INFO L933 BasicCegarLoop]: 18698 mSDtfsCounter, 6165 mSDsluCounter, 13846 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6165 SdHoareTripleChecker+Valid, 32544 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 00:37:38,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6165 Valid, 32544 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 00:37:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82666 states. [2021-11-23 00:37:39,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82666 to 82613. [2021-11-23 00:37:39,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82613 states, 81559 states have (on average 1.5151975870228913) internal successors, (123578), 81632 states have internal predecessors, (123578), 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) [2021-11-23 00:37:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82613 states to 82613 states and 125434 transitions. [2021-11-23 00:37:39,671 INFO L78 Accepts]: Start accepts. Automaton has 82613 states and 125434 transitions. Word has length 179 [2021-11-23 00:37:39,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:37:39,671 INFO L470 AbstractCegarLoop]: Abstraction has 82613 states and 125434 transitions. [2021-11-23 00:37:39,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:39,672 INFO L276 IsEmpty]: Start isEmpty. Operand 82613 states and 125434 transitions. [2021-11-23 00:37:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-23 00:37:39,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:37:39,679 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:37:39,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 00:37:39,679 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)] === [2021-11-23 00:37:39,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:37:39,680 INFO L85 PathProgramCache]: Analyzing trace with hash -677738786, now seen corresponding path program 1 times [2021-11-23 00:37:39,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:37:39,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662701477] [2021-11-23 00:37:39,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:39,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:37:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:37:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:37:40,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:37:40,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662701477] [2021-11-23 00:37:40,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662701477] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:37:40,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248241051] [2021-11-23 00:37:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:40,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:37:40,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:37:40,122 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) [2021-11-23 00:37:40,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 00:37:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:37:41,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 4239 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 00:37:41,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:37:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 00:37:41,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 00:37:41,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248241051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:37:41,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 00:37:41,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 00:37:41,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418809346] [2021-11-23 00:37:41,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:37:41,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:37:41,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:37:41,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:37:41,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:37:41,879 INFO L87 Difference]: Start difference. First operand 82613 states and 125434 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:37:43,543 INFO L93 Difference]: Finished difference Result 232815 states and 353666 transitions. [2021-11-23 00:37:43,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:37:43,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 198 [2021-11-23 00:37:43,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:37:43,995 INFO L225 Difference]: With dead ends: 232815 [2021-11-23 00:37:43,995 INFO L226 Difference]: Without dead ends: 150340 [2021-11-23 00:37:44,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:37:44,131 INFO L933 BasicCegarLoop]: 25744 mSDtfsCounter, 12044 mSDsluCounter, 14118 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12120 SdHoareTripleChecker+Valid, 39862 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:37:44,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12120 Valid, 39862 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:37:44,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150340 states. [2021-11-23 00:37:45,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150340 to 82629. [2021-11-23 00:37:45,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82629 states, 81575 states have (on average 1.5150965369292062) internal successors, (123594), 81648 states have internal predecessors, (123594), 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) [2021-11-23 00:37:46,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82629 states to 82629 states and 125450 transitions. [2021-11-23 00:37:46,144 INFO L78 Accepts]: Start accepts. Automaton has 82629 states and 125450 transitions. Word has length 198 [2021-11-23 00:37:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:37:46,146 INFO L470 AbstractCegarLoop]: Abstraction has 82629 states and 125450 transitions. [2021-11-23 00:37:46,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:46,148 INFO L276 IsEmpty]: Start isEmpty. Operand 82629 states and 125450 transitions. [2021-11-23 00:37:46,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-23 00:37:46,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:37:46,156 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:37:46,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 00:37:46,359 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 [2021-11-23 00:37:46,360 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)] === [2021-11-23 00:37:46,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:37:46,360 INFO L85 PathProgramCache]: Analyzing trace with hash 795991487, now seen corresponding path program 1 times [2021-11-23 00:37:46,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:37:46,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401373699] [2021-11-23 00:37:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:46,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:37:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:37:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:37:46,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:37:46,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401373699] [2021-11-23 00:37:46,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401373699] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:37:46,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010725588] [2021-11-23 00:37:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:46,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:37:46,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:37:46,805 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) [2021-11-23 00:37:46,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 00:37:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:37:48,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 4245 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 00:37:48,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:37:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:37:48,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 00:37:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:37:48,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010725588] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 00:37:48,617 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 00:37:48,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 00:37:48,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441141592] [2021-11-23 00:37:48,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 00:37:48,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 00:37:48,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:37:48,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 00:37:48,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 00:37:48,619 INFO L87 Difference]: Start difference. First operand 82629 states and 125450 transitions. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:49,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:37:49,893 INFO L93 Difference]: Finished difference Result 165168 states and 250800 transitions. [2021-11-23 00:37:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 00:37:49,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 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 200 [2021-11-23 00:37:49,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:37:50,091 INFO L225 Difference]: With dead ends: 165168 [2021-11-23 00:37:50,092 INFO L226 Difference]: Without dead ends: 82677 [2021-11-23 00:37:50,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 00:37:50,193 INFO L933 BasicCegarLoop]: 14091 mSDtfsCounter, 4 mSDsluCounter, 42264 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56355 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:37:50,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 56355 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:37:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82677 states. [2021-11-23 00:37:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82677 to 82677. [2021-11-23 00:37:51,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82677 states, 81623 states have (on average 1.514793624346079) internal successors, (123642), 81696 states have internal predecessors, (123642), 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) [2021-11-23 00:37:51,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82677 states to 82677 states and 125498 transitions. [2021-11-23 00:37:51,669 INFO L78 Accepts]: Start accepts. Automaton has 82677 states and 125498 transitions. Word has length 200 [2021-11-23 00:37:51,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:37:51,670 INFO L470 AbstractCegarLoop]: Abstraction has 82677 states and 125498 transitions. [2021-11-23 00:37:51,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:51,670 INFO L276 IsEmpty]: Start isEmpty. Operand 82677 states and 125498 transitions. [2021-11-23 00:37:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-23 00:37:51,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:37:51,678 INFO L514 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] [2021-11-23 00:37:51,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 00:37:51,902 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 [2021-11-23 00:37:51,903 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)] === [2021-11-23 00:37:51,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:37:51,904 INFO L85 PathProgramCache]: Analyzing trace with hash 462166931, now seen corresponding path program 2 times [2021-11-23 00:37:51,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:37:51,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774973424] [2021-11-23 00:37:51,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:51,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:37:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:37:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:37:52,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:37:52,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774973424] [2021-11-23 00:37:52,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774973424] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:37:52,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307126571] [2021-11-23 00:37:52,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 00:37:52,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:37:52,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:37:52,251 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) [2021-11-23 00:37:52,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 00:37:54,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-23 00:37:54,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 00:37:54,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 4007 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 00:37:54,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:37:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 00:37:54,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 00:37:54,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307126571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:37:54,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 00:37:54,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-23 00:37:54,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44084159] [2021-11-23 00:37:54,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:37:54,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:37:54,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:37:54,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:37:54,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 00:37:54,676 INFO L87 Difference]: Start difference. First operand 82677 states and 125498 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:56,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:37:56,096 INFO L93 Difference]: Finished difference Result 165347 states and 251019 transitions. [2021-11-23 00:37:56,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:37:56,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 206 [2021-11-23 00:37:56,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:37:56,264 INFO L225 Difference]: With dead ends: 165347 [2021-11-23 00:37:56,265 INFO L226 Difference]: Without dead ends: 82709 [2021-11-23 00:37:56,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 00:37:56,373 INFO L933 BasicCegarLoop]: 14061 mSDtfsCounter, 0 mSDsluCounter, 13967 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28028 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 00:37:56,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28028 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 00:37:56,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82709 states. [2021-11-23 00:37:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82709 to 82709. [2021-11-23 00:37:57,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82709 states, 81655 states have (on average 1.5145918804727205) internal successors, (123674), 81728 states have internal predecessors, (123674), 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) [2021-11-23 00:37:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82709 states to 82709 states and 125530 transitions. [2021-11-23 00:37:57,731 INFO L78 Accepts]: Start accepts. Automaton has 82709 states and 125530 transitions. Word has length 206 [2021-11-23 00:37:57,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:37:57,731 INFO L470 AbstractCegarLoop]: Abstraction has 82709 states and 125530 transitions. [2021-11-23 00:37:57,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:37:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 82709 states and 125530 transitions. [2021-11-23 00:37:57,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-23 00:37:57,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:37:57,739 INFO L514 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] [2021-11-23 00:37:57,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 00:37:57,959 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 [2021-11-23 00:37:57,960 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)] === [2021-11-23 00:37:57,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:37:57,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1140335757, now seen corresponding path program 1 times [2021-11-23 00:37:57,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:37:57,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627963457] [2021-11-23 00:37:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:57,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:37:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:37:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-23 00:37:58,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:37:58,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627963457] [2021-11-23 00:37:58,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627963457] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:37:58,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354535598] [2021-11-23 00:37:58,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:37:58,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:37:58,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:37:58,621 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) [2021-11-23 00:37:58,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 00:38:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:38:00,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 4770 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 00:38:00,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:38:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-23 00:38:00,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 00:38:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-23 00:38:00,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354535598] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 00:38:00,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 00:38:00,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-23 00:38:00,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877845287] [2021-11-23 00:38:00,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 00:38:00,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 00:38:00,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:38:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 00:38:00,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-23 00:38:00,831 INFO L87 Difference]: Start difference. First operand 82709 states and 125530 transitions. Second operand has 13 states, 13 states have (on average 19.307692307692307) internal successors, (251), 13 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:38:01,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:38:01,909 INFO L93 Difference]: Finished difference Result 165344 states and 251000 transitions. [2021-11-23 00:38:01,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 00:38:01,910 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.307692307692307) internal successors, (251), 13 states have internal predecessors, (251), 0 states have call successors, (0), 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 238 [2021-11-23 00:38:01,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:38:02,078 INFO L225 Difference]: With dead ends: 165344 [2021-11-23 00:38:02,079 INFO L226 Difference]: Without dead ends: 82805 [2021-11-23 00:38:02,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-23 00:38:02,344 INFO L933 BasicCegarLoop]: 14091 mSDtfsCounter, 15 mSDsluCounter, 28176 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 42267 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:38:02,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 42267 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:38:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82805 states. [2021-11-23 00:38:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82805 to 82805. [2021-11-23 00:38:03,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82805 states, 81751 states have (on average 1.5139875964820002) internal successors, (123770), 81824 states have internal predecessors, (123770), 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) [2021-11-23 00:38:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82805 states to 82805 states and 125626 transitions. [2021-11-23 00:38:03,576 INFO L78 Accepts]: Start accepts. Automaton has 82805 states and 125626 transitions. Word has length 238 [2021-11-23 00:38:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:38:03,576 INFO L470 AbstractCegarLoop]: Abstraction has 82805 states and 125626 transitions. [2021-11-23 00:38:03,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.307692307692307) internal successors, (251), 13 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:38:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 82805 states and 125626 transitions. [2021-11-23 00:38:03,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-23 00:38:03,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:38:03,583 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 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] [2021-11-23 00:38:03,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 00:38:03,807 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 [2021-11-23 00:38:03,808 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)] === [2021-11-23 00:38:03,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:38:03,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1032895003, now seen corresponding path program 2 times [2021-11-23 00:38:03,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:38:03,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110694227] [2021-11-23 00:38:03,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:38:03,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:38:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:38:04,567 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 6 proven. 100 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-23 00:38:04,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:38:04,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110694227] [2021-11-23 00:38:04,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110694227] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:38:04,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327492307] [2021-11-23 00:38:04,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 00:38:04,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:38:04,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:38:04,569 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) [2021-11-23 00:38:04,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 00:38:06,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-23 00:38:06,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 00:38:06,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 4007 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 00:38:06,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:38:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-23 00:38:07,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 00:38:07,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327492307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:38:07,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 00:38:07,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2021-11-23 00:38:07,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520384585] [2021-11-23 00:38:07,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:38:07,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:38:07,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:38:07,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:38:07,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-11-23 00:38:07,301 INFO L87 Difference]: Start difference. First operand 82805 states and 125626 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:38:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:38:08,600 INFO L93 Difference]: Finished difference Result 165576 states and 251219 transitions. [2021-11-23 00:38:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:38:08,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 250 [2021-11-23 00:38:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:38:08,776 INFO L225 Difference]: With dead ends: 165576 [2021-11-23 00:38:08,776 INFO L226 Difference]: Without dead ends: 82807 [2021-11-23 00:38:08,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-11-23 00:38:08,906 INFO L933 BasicCegarLoop]: 14091 mSDtfsCounter, 0 mSDsluCounter, 13967 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28058 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 00:38:08,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28058 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 00:38:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82807 states. [2021-11-23 00:38:10,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82807 to 82807. [2021-11-23 00:38:10,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82807 states, 81753 states have (on average 1.51397502232334) internal successors, (123772), 81826 states have internal predecessors, (123772), 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) [2021-11-23 00:38:10,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82807 states to 82807 states and 125628 transitions. [2021-11-23 00:38:10,361 INFO L78 Accepts]: Start accepts. Automaton has 82807 states and 125628 transitions. Word has length 250 [2021-11-23 00:38:10,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:38:10,361 INFO L470 AbstractCegarLoop]: Abstraction has 82807 states and 125628 transitions. [2021-11-23 00:38:10,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:38:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 82807 states and 125628 transitions. [2021-11-23 00:38:10,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-23 00:38:10,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:38:10,367 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:38:10,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 00:38:10,575 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 [2021-11-23 00:38:10,576 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)] === [2021-11-23 00:38:10,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:38:10,576 INFO L85 PathProgramCache]: Analyzing trace with hash -872805283, now seen corresponding path program 1 times [2021-11-23 00:38:10,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:38:10,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087176396] [2021-11-23 00:38:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:38:10,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:38:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:38:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 6 proven. 100 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-23 00:38:11,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:38:11,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087176396] [2021-11-23 00:38:11,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087176396] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:38:11,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681157695] [2021-11-23 00:38:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:38:11,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:38:11,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:38:11,030 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) [2021-11-23 00:38:11,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 00:38:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:38:12,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 4890 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 00:38:12,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:38:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 6 proven. 100 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-23 00:38:13,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 00:38:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 6 proven. 100 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-23 00:38:13,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681157695] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 00:38:13,751 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 00:38:13,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-23 00:38:13,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859091088] [2021-11-23 00:38:13,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 00:38:13,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 00:38:13,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:38:13,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 00:38:13,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-23 00:38:13,753 INFO L87 Difference]: Start difference. First operand 82807 states and 125628 transitions. Second operand has 25 states, 25 states have (on average 11.08) internal successors, (277), 25 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:38:15,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:38:15,079 INFO L93 Difference]: Finished difference Result 165634 states and 251338 transitions. [2021-11-23 00:38:15,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 00:38:15,080 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.08) internal successors, (277), 25 states have internal predecessors, (277), 0 states have call successors, (0), 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 252 [2021-11-23 00:38:15,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:38:15,258 INFO L225 Difference]: With dead ends: 165634 [2021-11-23 00:38:15,258 INFO L226 Difference]: Without dead ends: 82999 [2021-11-23 00:38:15,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-23 00:38:15,386 INFO L933 BasicCegarLoop]: 14091 mSDtfsCounter, 22 mSDsluCounter, 28176 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 42267 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 00:38:15,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 42267 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 00:38:15,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82999 states. [2021-11-23 00:38:16,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82999 to 82999. [2021-11-23 00:38:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82999 states, 81945 states have (on average 1.5127707608761976) internal successors, (123964), 82018 states have internal predecessors, (123964), 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) [2021-11-23 00:38:16,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82999 states to 82999 states and 125820 transitions. [2021-11-23 00:38:16,976 INFO L78 Accepts]: Start accepts. Automaton has 82999 states and 125820 transitions. Word has length 252 [2021-11-23 00:38:16,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:38:16,976 INFO L470 AbstractCegarLoop]: Abstraction has 82999 states and 125820 transitions. [2021-11-23 00:38:16,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.08) internal successors, (277), 25 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:38:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 82999 states and 125820 transitions. [2021-11-23 00:38:16,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-23 00:38:16,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:38:16,982 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 00:38:17,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 00:38:17,193 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 [2021-11-23 00:38:17,194 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)] === [2021-11-23 00:38:17,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:38:17,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1790873683, now seen corresponding path program 2 times [2021-11-23 00:38:17,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:38:17,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261140922] [2021-11-23 00:38:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:38:17,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:38:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:38:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 6 proven. 484 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-23 00:38:18,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:38:18,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261140922] [2021-11-23 00:38:18,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261140922] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:38:18,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326257759] [2021-11-23 00:38:18,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 00:38:18,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:38:18,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:38:18,064 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) [2021-11-23 00:38:18,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 00:38:26,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 00:38:26,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 00:38:26,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 5070 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 00:38:26,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:38:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 6 proven. 484 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-23 00:38:27,211 INFO L328 TraceCheckSpWp]: Computing backward predicates...