./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 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-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-wip.dd.seqcomp-5b36d44 [2021-11-07 14:45:44,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 14:45:44,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 14:45:44,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 14:45:44,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 14:45:44,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 14:45:44,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 14:45:44,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 14:45:44,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 14:45:44,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 14:45:44,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 14:45:44,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 14:45:44,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 14:45:44,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 14:45:44,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 14:45:44,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 14:45:44,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 14:45:44,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 14:45:44,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 14:45:44,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 14:45:44,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 14:45:44,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 14:45:44,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 14:45:44,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 14:45:44,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 14:45:44,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 14:45:44,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 14:45:44,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 14:45:44,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 14:45:44,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 14:45:44,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 14:45:44,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 14:45:44,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 14:45:44,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 14:45:44,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 14:45:44,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 14:45:44,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 14:45:44,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 14:45:44,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 14:45:44,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 14:45:44,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 14:45:44,707 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 14:45:44,733 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 14:45:44,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 14:45:44,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 14:45:44,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 14:45:44,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 14:45:44,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 14:45:44,735 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 14:45:44,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 14:45:44,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 14:45:44,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 14:45:44,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 14:45:44,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 14:45:44,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 14:45:44,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 14:45:44,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 14:45:44,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 14:45:44,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 14:45:44,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 14:45:44,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 14:45:44,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:45:44,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 14:45:44,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 14:45:44,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 14:45:44,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 14:45:44,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 14:45:44,738 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 14:45:44,738 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 14:45:44,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 14:45:44,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 14:45:44,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2021-11-07 14:45:44,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 14:45:44,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 14:45:44,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 14:45:44,950 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 14:45:44,951 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 14:45:44,952 INFO L432 ainManager$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 [2021-11-07 14:45:45,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12a31e429/4057963ab68a4a94b1f229cb722c7d62/FLAG012dea637 [2021-11-07 14:45:45,636 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 14:45:45,637 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 [2021-11-07 14:45:45,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12a31e429/4057963ab68a4a94b1f229cb722c7d62/FLAG012dea637 [2021-11-07 14:45:46,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12a31e429/4057963ab68a4a94b1f229cb722c7d62 [2021-11-07 14:45:46,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 14:45:46,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 14:45:46,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 14:45:46,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 14:45:46,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 14:45:46,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:46" (1/1) ... [2021-11-07 14:45:46,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23eb107b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:46, skipping insertion in model container [2021-11-07 14:45:46,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:46" (1/1) ... [2021-11-07 14:45:46,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 14:45:46,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 14:45:47,625 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2021-11-07 14:45:47,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:45:47,707 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 14:45:48,000 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2021-11-07 14:45:48,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:45:48,085 INFO L208 MainTranslator]: Completed translation [2021-11-07 14:45:48,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:48 WrapperNode [2021-11-07 14:45:48,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 14:45:48,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 14:45:48,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 14:45:48,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 14:45:48,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:48" (1/1) ... [2021-11-07 14:45:48,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:48" (1/1) ... [2021-11-07 14:45:49,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 14:45:49,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 14:45:49,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 14:45:49,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 14:45:49,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:48" (1/1) ... [2021-11-07 14:45:49,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:48" (1/1) ... [2021-11-07 14:45:49,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:48" (1/1) ... [2021-11-07 14:45:49,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:48" (1/1) ... [2021-11-07 14:45:50,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:48" (1/1) ... [2021-11-07 14:45:50,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:48" (1/1) ... [2021-11-07 14:45:50,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:48" (1/1) ... [2021-11-07 14:45:50,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 14:45:50,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 14:45:50,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 14:45:50,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 14:45:50,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:48" (1/1) ... [2021-11-07 14:45:50,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:45:50,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:45:50,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 14:45:50,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 14:45:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2021-11-07 14:45:50,948 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2021-11-07 14:45:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 14:45:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 14:45:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2021-11-07 14:45:50,949 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2021-11-07 14:45:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2021-11-07 14:45:50,949 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2021-11-07 14:45:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 14:45:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 14:45:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 14:45:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 14:45:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 14:45:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2021-11-07 14:45:50,950 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2021-11-07 14:45:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 14:45:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 14:45:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 14:45:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2021-11-07 14:45:50,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2021-11-07 14:45:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 14:45:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2021-11-07 14:45:50,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2021-11-07 14:45:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 14:45:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 14:45:50,952 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-07 14:45:50,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-07 14:45:50,952 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2021-11-07 14:45:50,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2021-11-07 14:45:50,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 14:45:50,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 14:45:50,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 14:47:24,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 14:47:24,484 INFO L299 CfgBuilder]: Removed 3636 assume(true) statements. [2021-11-07 14:47:24,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:47:24 BoogieIcfgContainer [2021-11-07 14:47:24,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 14:47:24,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 14:47:24,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 14:47:24,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 14:47:24,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:45:46" (1/3) ... [2021-11-07 14:47:24,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad1d9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:47:24, skipping insertion in model container [2021-11-07 14:47:24,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:48" (2/3) ... [2021-11-07 14:47:24,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad1d9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:47:24, skipping insertion in model container [2021-11-07 14:47:24,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:47:24" (3/3) ... [2021-11-07 14:47:24,502 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-07 14:47:24,506 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 14:47:24,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-07 14:47:24,553 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 14:47:24,557 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 14:47:24,557 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-07 14:47:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 9053 states, 8920 states have (on average 1.537780269058296) internal successors, (13717), 8946 states have internal predecessors, (13717), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-07 14:47:24,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 14:47:24,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:47:24,658 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] [2021-11-07 14:47:24,659 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)] === [2021-11-07 14:47:24,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:47:24,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1693502438, now seen corresponding path program 1 times [2021-11-07 14:47:24,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:47:24,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571981687] [2021-11-07 14:47:24,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:24,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:47:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:47:24,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:47:24,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571981687] [2021-11-07 14:47:24,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571981687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:47:24,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:47:24,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:47:24,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874983688] [2021-11-07 14:47:24,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:47:24,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 14:47:24,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:47:24,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 14:47:24,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:47:24,991 INFO L87 Difference]: Start difference. First operand has 9053 states, 8920 states have (on average 1.537780269058296) internal successors, (13717), 8946 states have internal predecessors, (13717), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:47:25,218 INFO L93 Difference]: Finished difference Result 18102 states and 27928 transitions. [2021-11-07 14:47:25,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 14:47:25,220 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-07 14:47:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:47:25,281 INFO L225 Difference]: With dead ends: 18102 [2021-11-07 14:47:25,281 INFO L226 Difference]: Without dead ends: 9044 [2021-11-07 14:47:25,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:47:25,319 INFO L933 BasicCegarLoop]: 13825 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13825 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 14:47:25,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13825 Invalid, 0 Unknown, 0 Unchecked, 14.06ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 14:47:25,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9044 states. [2021-11-07 14:47:25,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9044 to 9044. [2021-11-07 14:47:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9044 states, 8912 states have (on average 1.5263689407540395) internal successors, (13603), 8937 states have internal predecessors, (13603), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-07 14:47:25,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9044 states to 9044 states and 13811 transitions. [2021-11-07 14:47:25,518 INFO L78 Accepts]: Start accepts. Automaton has 9044 states and 13811 transitions. Word has length 156 [2021-11-07 14:47:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:47:25,518 INFO L470 AbstractCegarLoop]: Abstraction has 9044 states and 13811 transitions. [2021-11-07 14:47:25,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 9044 states and 13811 transitions. [2021-11-07 14:47:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 14:47:25,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:47:25,522 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] [2021-11-07 14:47:25,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 14:47:25,522 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)] === [2021-11-07 14:47:25,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:47:25,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1193637878, now seen corresponding path program 1 times [2021-11-07 14:47:25,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:47:25,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411670911] [2021-11-07 14:47:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:25,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:47:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:47:25,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:47:25,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411670911] [2021-11-07 14:47:25,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411670911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:47:25,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:47:25,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:47:25,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832933006] [2021-11-07 14:47:25,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:47:25,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:47:25,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:47:25,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:47:25,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:47:25,766 INFO L87 Difference]: Start difference. First operand 9044 states and 13811 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:26,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:47:26,203 INFO L93 Difference]: Finished difference Result 26683 states and 40840 transitions. [2021-11-07 14:47:26,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:47:26,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-07 14:47:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:47:26,278 INFO L225 Difference]: With dead ends: 26683 [2021-11-07 14:47:26,278 INFO L226 Difference]: Without dead ends: 17777 [2021-11-07 14:47:26,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:47:26,308 INFO L933 BasicCegarLoop]: 13910 mSDtfsCounter, 13435 mSDsluCounter, 13745 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13435 SdHoareTripleChecker+Valid, 27655 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.91ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.09ms IncrementalHoareTripleChecker+Time [2021-11-07 14:47:26,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13435 Valid, 27655 Invalid, 15 Unknown, 0 Unchecked, 41.91ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 122.09ms Time] [2021-11-07 14:47:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17777 states. [2021-11-07 14:47:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17777 to 17741. [2021-11-07 14:47:26,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17741 states, 17499 states have (on average 1.5296874107091833) internal successors, (26768), 17530 states have internal predecessors, (26768), 206 states have call successors, (206), 16 states have call predecessors, (206), 16 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-07 14:47:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17741 states to 17741 states and 27180 transitions. [2021-11-07 14:47:26,643 INFO L78 Accepts]: Start accepts. Automaton has 17741 states and 27180 transitions. Word has length 156 [2021-11-07 14:47:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:47:26,646 INFO L470 AbstractCegarLoop]: Abstraction has 17741 states and 27180 transitions. [2021-11-07 14:47:26,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand 17741 states and 27180 transitions. [2021-11-07 14:47:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-07 14:47:26,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:47:26,650 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] [2021-11-07 14:47:26,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 14:47:26,650 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)] === [2021-11-07 14:47:26,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:47:26,651 INFO L85 PathProgramCache]: Analyzing trace with hash -857498354, now seen corresponding path program 1 times [2021-11-07 14:47:26,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:47:26,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803869432] [2021-11-07 14:47:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:26,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:47:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:47:26,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:47:26,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803869432] [2021-11-07 14:47:26,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803869432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:47:26,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:47:26,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:47:26,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35439251] [2021-11-07 14:47:26,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:47:26,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:47:26,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:47:26,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:47:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:47:26,840 INFO L87 Difference]: Start difference. First operand 17741 states and 27180 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:27,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:47:27,068 INFO L93 Difference]: Finished difference Result 35346 states and 54191 transitions. [2021-11-07 14:47:27,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:47:27,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-07 14:47:27,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:47:27,111 INFO L225 Difference]: With dead ends: 35346 [2021-11-07 14:47:27,111 INFO L226 Difference]: Without dead ends: 17743 [2021-11-07 14:47:27,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:47:27,148 INFO L933 BasicCegarLoop]: 13809 mSDtfsCounter, 1 mSDsluCounter, 13806 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27615 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.41ms IncrementalHoareTripleChecker+Time [2021-11-07 14:47:27,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 27615 Invalid, 6 Unknown, 0 Unchecked, 24.31ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 6.41ms Time] [2021-11-07 14:47:27,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17743 states. [2021-11-07 14:47:27,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17743 to 17742. [2021-11-07 14:47:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17742 states, 17500 states have (on average 1.5296571428571428) internal successors, (26769), 17531 states have internal predecessors, (26769), 206 states have call successors, (206), 16 states have call predecessors, (206), 16 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-07 14:47:27,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17742 states to 17742 states and 27181 transitions. [2021-11-07 14:47:27,425 INFO L78 Accepts]: Start accepts. Automaton has 17742 states and 27181 transitions. Word has length 163 [2021-11-07 14:47:27,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:47:27,426 INFO L470 AbstractCegarLoop]: Abstraction has 17742 states and 27181 transitions. [2021-11-07 14:47:27,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:27,426 INFO L276 IsEmpty]: Start isEmpty. Operand 17742 states and 27181 transitions. [2021-11-07 14:47:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 14:47:27,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:47:27,429 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] [2021-11-07 14:47:27,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 14:47:27,430 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)] === [2021-11-07 14:47:27,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:47:27,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1755321742, now seen corresponding path program 1 times [2021-11-07 14:47:27,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:47:27,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991839125] [2021-11-07 14:47:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:27,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:47:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:47:27,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:47:27,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991839125] [2021-11-07 14:47:27,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991839125] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:47:27,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909590712] [2021-11-07 14:47:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:27,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:47:27,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:47:27,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:47:27,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 14:47:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:28,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 14:47:28,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:47:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 14:47:28,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:47:28,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909590712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:47:28,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:47:28,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 14:47:28,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173672549] [2021-11-07 14:47:28,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:47:28,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:47:28,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:47:28,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:47:28,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:47:28,925 INFO L87 Difference]: Start difference. First operand 17742 states and 27181 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:29,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:47:29,411 INFO L93 Difference]: Finished difference Result 52911 states and 81161 transitions. [2021-11-07 14:47:29,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:47:29,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-07 14:47:29,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:47:29,497 INFO L225 Difference]: With dead ends: 52911 [2021-11-07 14:47:29,497 INFO L226 Difference]: Without dead ends: 35303 [2021-11-07 14:47:29,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.21ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:47:29,536 INFO L933 BasicCegarLoop]: 14456 mSDtfsCounter, 13602 mSDsluCounter, 13575 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13602 SdHoareTripleChecker+Valid, 28031 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.11ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.87ms IncrementalHoareTripleChecker+Time [2021-11-07 14:47:29,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13602 Valid, 28031 Invalid, 108 Unknown, 0 Unchecked, 30.11ms Time], IncrementalHoareTripleChecker [19 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 96.87ms Time] [2021-11-07 14:47:29,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35303 states. [2021-11-07 14:47:29,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35303 to 35247. [2021-11-07 14:47:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35247 states, 34783 states have (on average 1.5308052784406176) internal successors, (53246), 34826 states have internal predecessors, (53246), 412 states have call successors, (412), 32 states have call predecessors, (412), 32 states have return successors, (412), 400 states have call predecessors, (412), 412 states have call successors, (412) [2021-11-07 14:47:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35247 states to 35247 states and 54070 transitions. [2021-11-07 14:47:30,139 INFO L78 Accepts]: Start accepts. Automaton has 35247 states and 54070 transitions. Word has length 165 [2021-11-07 14:47:30,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:47:30,140 INFO L470 AbstractCegarLoop]: Abstraction has 35247 states and 54070 transitions. [2021-11-07 14:47:30,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 35247 states and 54070 transitions. [2021-11-07 14:47:30,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-07 14:47:30,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:47:30,146 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] [2021-11-07 14:47:30,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 14:47:30,369 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 [2021-11-07 14:47:30,370 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)] === [2021-11-07 14:47:30,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:47:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash 146817921, now seen corresponding path program 1 times [2021-11-07 14:47:30,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:47:30,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794932785] [2021-11-07 14:47:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:30,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:47:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:47:30,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:47:30,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794932785] [2021-11-07 14:47:30,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794932785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:47:30,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:47:30,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:47:30,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538787443] [2021-11-07 14:47:30,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:47:30,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:47:30,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:47:30,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:47:30,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:47:30,509 INFO L87 Difference]: Start difference. First operand 35247 states and 54070 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:31,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:47:31,333 INFO L93 Difference]: Finished difference Result 96477 states and 148043 transitions. [2021-11-07 14:47:31,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:47:31,334 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 [2021-11-07 14:47:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:47:31,473 INFO L225 Difference]: With dead ends: 96477 [2021-11-07 14:47:31,473 INFO L226 Difference]: Without dead ends: 61368 [2021-11-07 14:47:31,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:47:31,545 INFO L933 BasicCegarLoop]: 14058 mSDtfsCounter, 10315 mSDsluCounter, 13633 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10315 SdHoareTripleChecker+Valid, 27691 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.73ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.95ms IncrementalHoareTripleChecker+Time [2021-11-07 14:47:31,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10315 Valid, 27691 Invalid, 8 Unknown, 0 Unchecked, 22.73ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 22.95ms Time] [2021-11-07 14:47:31,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61368 states. [2021-11-07 14:47:32,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61368 to 61347. [2021-11-07 14:47:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61347 states, 60599 states have (on average 1.5313454017393027) internal successors, (92798), 60662 states have internal predecessors, (92798), 664 states have call successors, (664), 64 states have call predecessors, (664), 64 states have return successors, (664), 640 states have call predecessors, (664), 664 states have call successors, (664) [2021-11-07 14:47:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61347 states to 61347 states and 94126 transitions. [2021-11-07 14:47:32,454 INFO L78 Accepts]: Start accepts. Automaton has 61347 states and 94126 transitions. Word has length 175 [2021-11-07 14:47:32,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:47:32,455 INFO L470 AbstractCegarLoop]: Abstraction has 61347 states and 94126 transitions. [2021-11-07 14:47:32,455 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) [2021-11-07 14:47:32,455 INFO L276 IsEmpty]: Start isEmpty. Operand 61347 states and 94126 transitions. [2021-11-07 14:47:32,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-07 14:47:32,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:47:32,461 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] [2021-11-07 14:47:32,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 14:47:32,461 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)] === [2021-11-07 14:47:32,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:47:32,462 INFO L85 PathProgramCache]: Analyzing trace with hash 731096779, now seen corresponding path program 1 times [2021-11-07 14:47:32,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:47:32,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187683237] [2021-11-07 14:47:32,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:32,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:47:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:47:32,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:47:32,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187683237] [2021-11-07 14:47:32,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187683237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:47:32,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:47:32,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:47:32,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833548192] [2021-11-07 14:47:32,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:47:32,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:47:32,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:47:32,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:47:32,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:47:32,598 INFO L87 Difference]: Start difference. First operand 61347 states and 94126 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:34,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:47:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:47:35,970 INFO L93 Difference]: Finished difference Result 141459 states and 217017 transitions. [2021-11-07 14:47:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:47:35,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-11-07 14:47:35,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:47:36,217 INFO L225 Difference]: With dead ends: 141459 [2021-11-07 14:47:36,217 INFO L226 Difference]: Without dead ends: 80250 [2021-11-07 14:47:36,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:47:36,330 INFO L933 BasicCegarLoop]: 18270 mSDtfsCounter, 6004 mSDsluCounter, 13564 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2105.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6004 SdHoareTripleChecker+Valid, 31834 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 404.09ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2157.67ms IncrementalHoareTripleChecker+Time [2021-11-07 14:47:36,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6004 Valid, 31834 Invalid, 77 Unknown, 0 Unchecked, 404.09ms Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 2157.67ms Time] [2021-11-07 14:47:36,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80250 states. [2021-11-07 14:47:37,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80250 to 80199. [2021-11-07 14:47:37,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80199 states, 79145 states have (on average 1.5309116179164823) internal successors, (121164), 79218 states have internal predecessors, (121164), 928 states have call successors, (928), 106 states have call predecessors, (928), 106 states have return successors, (928), 904 states have call predecessors, (928), 928 states have call successors, (928) [2021-11-07 14:47:37,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80199 states to 80199 states and 123020 transitions. [2021-11-07 14:47:37,609 INFO L78 Accepts]: Start accepts. Automaton has 80199 states and 123020 transitions. Word has length 178 [2021-11-07 14:47:37,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:47:37,610 INFO L470 AbstractCegarLoop]: Abstraction has 80199 states and 123020 transitions. [2021-11-07 14:47:37,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:37,610 INFO L276 IsEmpty]: Start isEmpty. Operand 80199 states and 123020 transitions. [2021-11-07 14:47:37,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-07 14:47:37,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:47:37,616 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] [2021-11-07 14:47:37,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 14:47:37,616 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)] === [2021-11-07 14:47:37,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:47:37,617 INFO L85 PathProgramCache]: Analyzing trace with hash 72115822, now seen corresponding path program 1 times [2021-11-07 14:47:37,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:47:37,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833958603] [2021-11-07 14:47:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:37,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:47:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:47:37,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:47:37,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833958603] [2021-11-07 14:47:37,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833958603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:47:37,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429149361] [2021-11-07 14:47:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:37,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:47:37,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:47:37,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:47:37,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 14:47:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:38,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 2856 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 14:47:38,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:47:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 14:47:39,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:47:39,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429149361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:47:39,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:47:39,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 14:47:39,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012685778] [2021-11-07 14:47:39,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:47:39,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:47:39,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:47:39,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:47:39,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:47:39,007 INFO L87 Difference]: Start difference. First operand 80199 states and 123020 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:41,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:47:41,015 INFO L93 Difference]: Finished difference Result 225863 states and 346714 transitions. [2021-11-07 14:47:41,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:47:41,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2021-11-07 14:47:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:47:41,534 INFO L225 Difference]: With dead ends: 225863 [2021-11-07 14:47:41,534 INFO L226 Difference]: Without dead ends: 145802 [2021-11-07 14:47:41,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.42ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:47:41,679 INFO L933 BasicCegarLoop]: 20266 mSDtfsCounter, 11787 mSDsluCounter, 13821 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11863 SdHoareTripleChecker+Valid, 34087 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.38ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.03ms IncrementalHoareTripleChecker+Time [2021-11-07 14:47:41,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11863 Valid, 34087 Invalid, 14 Unknown, 0 Unchecked, 24.38ms Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 16.03ms Time] [2021-11-07 14:47:41,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145802 states. [2021-11-07 14:47:43,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145802 to 80215. [2021-11-07 14:47:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80215 states, 79161 states have (on average 1.5308043102032567) internal successors, (121180), 79234 states have internal predecessors, (121180), 928 states have call successors, (928), 106 states have call predecessors, (928), 106 states have return successors, (928), 904 states have call predecessors, (928), 928 states have call successors, (928) [2021-11-07 14:47:43,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80215 states to 80215 states and 123036 transitions. [2021-11-07 14:47:43,702 INFO L78 Accepts]: Start accepts. Automaton has 80215 states and 123036 transitions. Word has length 197 [2021-11-07 14:47:43,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:47:43,702 INFO L470 AbstractCegarLoop]: Abstraction has 80215 states and 123036 transitions. [2021-11-07 14:47:43,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:43,703 INFO L276 IsEmpty]: Start isEmpty. Operand 80215 states and 123036 transitions. [2021-11-07 14:47:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-07 14:47:43,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:47:43,711 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] [2021-11-07 14:47:43,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 14:47:43,927 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 [2021-11-07 14:47:43,928 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)] === [2021-11-07 14:47:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:47:43,929 INFO L85 PathProgramCache]: Analyzing trace with hash -778676785, now seen corresponding path program 1 times [2021-11-07 14:47:43,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:47:43,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622046173] [2021-11-07 14:47:43,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:43,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:47:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:47:44,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:47:44,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622046173] [2021-11-07 14:47:44,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622046173] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:47:44,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830325289] [2021-11-07 14:47:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:44,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:47:44,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:47:44,207 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) [2021-11-07 14:47:44,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 14:47:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:45,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 14:47:45,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:47:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:47:45,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 14:47:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:47:45,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830325289] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 14:47:45,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 14:47:45,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 14:47:45,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616406785] [2021-11-07 14:47:45,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 14:47:45,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 14:47:45,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:47:45,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 14:47:45,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:47:45,741 INFO L87 Difference]: Start difference. First operand 80215 states and 123036 transitions. Second operand has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:47,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:47:47,168 INFO L93 Difference]: Finished difference Result 160340 states and 245972 transitions. [2021-11-07 14:47:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 14:47:47,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-11-07 14:47:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:47:47,374 INFO L225 Difference]: With dead ends: 160340 [2021-11-07 14:47:47,375 INFO L226 Difference]: Without dead ends: 80263 [2021-11-07 14:47:47,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 22.27ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:47:47,473 INFO L933 BasicCegarLoop]: 13809 mSDtfsCounter, 6 mSDsluCounter, 27612 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 41421 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.33ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.39ms IncrementalHoareTripleChecker+Time [2021-11-07 14:47:47,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 41421 Invalid, 20 Unknown, 0 Unchecked, 20.33ms Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 21.39ms Time] [2021-11-07 14:47:47,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80263 states. [2021-11-07 14:47:48,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80263 to 80263. [2021-11-07 14:47:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80263 states, 79209 states have (on average 1.5304826471739323) internal successors, (121228), 79282 states have internal predecessors, (121228), 928 states have call successors, (928), 106 states have call predecessors, (928), 106 states have return successors, (928), 904 states have call predecessors, (928), 928 states have call successors, (928) [2021-11-07 14:47:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80263 states to 80263 states and 123084 transitions. [2021-11-07 14:47:49,057 INFO L78 Accepts]: Start accepts. Automaton has 80263 states and 123084 transitions. Word has length 199 [2021-11-07 14:47:49,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:47:49,058 INFO L470 AbstractCegarLoop]: Abstraction has 80263 states and 123084 transitions. [2021-11-07 14:47:49,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:49,058 INFO L276 IsEmpty]: Start isEmpty. Operand 80263 states and 123084 transitions. [2021-11-07 14:47:49,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-07 14:47:49,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:47:49,065 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] [2021-11-07 14:47:49,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 14:47:49,279 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 [2021-11-07 14:47:49,280 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)] === [2021-11-07 14:47:49,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:47:49,280 INFO L85 PathProgramCache]: Analyzing trace with hash -864682757, now seen corresponding path program 2 times [2021-11-07 14:47:49,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:47:49,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710466117] [2021-11-07 14:47:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:49,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:47:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:47:49,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:47:49,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710466117] [2021-11-07 14:47:49,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710466117] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:47:49,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16462949] [2021-11-07 14:47:49,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 14:47:49,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:47:49,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:47:49,560 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) [2021-11-07 14:47:49,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 14:47:52,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 14:47:52,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 14:47:52,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 14:47:52,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:47:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 14:47:53,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:47:53,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16462949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:47:53,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:47:53,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-07 14:47:53,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741967890] [2021-11-07 14:47:53,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:47:53,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:47:53,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:47:53,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:47:53,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 14:47:53,102 INFO L87 Difference]: Start difference. First operand 80263 states and 123084 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:54,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:47:54,675 INFO L93 Difference]: Finished difference Result 160519 states and 246191 transitions. [2021-11-07 14:47:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:47:54,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2021-11-07 14:47:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:47:54,858 INFO L225 Difference]: With dead ends: 160519 [2021-11-07 14:47:54,859 INFO L226 Difference]: Without dead ends: 80295 [2021-11-07 14:47:54,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 33.59ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 14:47:54,975 INFO L933 BasicCegarLoop]: 13779 mSDtfsCounter, 0 mSDsluCounter, 13685 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 304.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27464 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.69ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 365.56ms IncrementalHoareTripleChecker+Time [2021-11-07 14:47:54,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27464 Invalid, 188 Unknown, 0 Unchecked, 14.69ms Time], IncrementalHoareTripleChecker [62 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 365.56ms Time] [2021-11-07 14:47:55,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80295 states. [2021-11-07 14:47:56,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80295 to 80295. [2021-11-07 14:47:56,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80295 states, 79241 states have (on average 1.5302684216504083) internal successors, (121260), 79314 states have internal predecessors, (121260), 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) [2021-11-07 14:47:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80295 states to 80295 states and 123116 transitions. [2021-11-07 14:47:56,525 INFO L78 Accepts]: Start accepts. Automaton has 80295 states and 123116 transitions. Word has length 205 [2021-11-07 14:47:56,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:47:56,525 INFO L470 AbstractCegarLoop]: Abstraction has 80295 states and 123116 transitions. [2021-11-07 14:47:56,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:56,526 INFO L276 IsEmpty]: Start isEmpty. Operand 80295 states and 123116 transitions. [2021-11-07 14:47:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-07 14:47:56,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:47:56,534 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] [2021-11-07 14:47:56,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 14:47:56,759 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 [2021-11-07 14:47:56,760 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)] === [2021-11-07 14:47:56,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:47:56,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1409949925, now seen corresponding path program 1 times [2021-11-07 14:47:56,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:47:56,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519920762] [2021-11-07 14:47:56,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:56,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:47:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 14:47:57,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:47:57,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519920762] [2021-11-07 14:47:57,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519920762] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:47:57,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154555292] [2021-11-07 14:47:57,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:47:57,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:47:57,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:47:57,056 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) [2021-11-07 14:47:57,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 14:47:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:47:58,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 14:47:58,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:47:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 14:47:58,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 14:47:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 14:47:58,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154555292] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 14:47:58,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 14:47:58,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-07 14:47:58,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481011454] [2021-11-07 14:47:58,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 14:47:58,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 14:47:58,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:47:58,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 14:47:58,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-07 14:47:58,895 INFO L87 Difference]: Start difference. First operand 80295 states and 123116 transitions. Second operand has 13 states, 13 states have (on average 19.23076923076923) internal successors, (250), 13 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:47:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:47:59,905 INFO L93 Difference]: Finished difference Result 160516 states and 246172 transitions. [2021-11-07 14:47:59,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 14:47:59,906 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.23076923076923) internal successors, (250), 13 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-11-07 14:47:59,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:48:00,069 INFO L225 Difference]: With dead ends: 160516 [2021-11-07 14:48:00,069 INFO L226 Difference]: Without dead ends: 80391 [2021-11-07 14:48:00,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 65.69ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-07 14:48:00,184 INFO L933 BasicCegarLoop]: 13809 mSDtfsCounter, 10 mSDsluCounter, 27612 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41421 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.77ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.02ms IncrementalHoareTripleChecker+Time [2021-11-07 14:48:00,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 41421 Invalid, 35 Unknown, 0 Unchecked, 16.77ms Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 49.02ms Time] [2021-11-07 14:48:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80391 states. [2021-11-07 14:48:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80391 to 80391. [2021-11-07 14:48:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80391 states, 79337 states have (on average 1.5296267819554559) internal successors, (121356), 79410 states have internal predecessors, (121356), 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) [2021-11-07 14:48:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80391 states to 80391 states and 123212 transitions. [2021-11-07 14:48:01,645 INFO L78 Accepts]: Start accepts. Automaton has 80391 states and 123212 transitions. Word has length 237 [2021-11-07 14:48:01,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:48:01,646 INFO L470 AbstractCegarLoop]: Abstraction has 80391 states and 123212 transitions. [2021-11-07 14:48:01,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.23076923076923) internal successors, (250), 13 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:48:01,646 INFO L276 IsEmpty]: Start isEmpty. Operand 80391 states and 123212 transitions. [2021-11-07 14:48:01,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-07 14:48:01,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:48:01,653 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] [2021-11-07 14:48:01,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 14:48:01,876 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 [2021-11-07 14:48:01,877 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)] === [2021-11-07 14:48:01,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:48:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1569622643, now seen corresponding path program 2 times [2021-11-07 14:48:01,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:48:01,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896969003] [2021-11-07 14:48:01,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:48:01,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:48:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:48:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 6 proven. 100 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 14:48:02,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:48:02,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896969003] [2021-11-07 14:48:02,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896969003] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:48:02,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552688609] [2021-11-07 14:48:02,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 14:48:02,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:48:02,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:48:02,158 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) [2021-11-07 14:48:02,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 14:48:04,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 14:48:04,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 14:48:04,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 14:48:04,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:48:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-07 14:48:05,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:48:05,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552688609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:48:05,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:48:05,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2021-11-07 14:48:05,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397517627] [2021-11-07 14:48:05,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:48:05,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:48:05,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:48:05,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:48:05,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-11-07 14:48:05,179 INFO L87 Difference]: Start difference. First operand 80391 states and 123212 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:48:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:48:06,390 INFO L93 Difference]: Finished difference Result 160748 states and 246391 transitions. [2021-11-07 14:48:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:48:06,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2021-11-07 14:48:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:48:06,578 INFO L225 Difference]: With dead ends: 160748 [2021-11-07 14:48:06,578 INFO L226 Difference]: Without dead ends: 80393 [2021-11-07 14:48:06,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 72.83ms TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-11-07 14:48:06,702 INFO L933 BasicCegarLoop]: 13809 mSDtfsCounter, 0 mSDsluCounter, 13685 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27494 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.01ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 187.90ms IncrementalHoareTripleChecker+Time [2021-11-07 14:48:06,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27494 Invalid, 128 Unknown, 0 Unchecked, 14.01ms Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 187.90ms Time] [2021-11-07 14:48:06,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80393 states. [2021-11-07 14:48:08,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80393 to 80393. [2021-11-07 14:48:08,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80393 states, 79339 states have (on average 1.529613430973418) internal successors, (121358), 79412 states have internal predecessors, (121358), 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) [2021-11-07 14:48:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80393 states to 80393 states and 123214 transitions. [2021-11-07 14:48:08,361 INFO L78 Accepts]: Start accepts. Automaton has 80393 states and 123214 transitions. Word has length 249 [2021-11-07 14:48:08,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:48:08,361 INFO L470 AbstractCegarLoop]: Abstraction has 80393 states and 123214 transitions. [2021-11-07 14:48:08,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:48:08,362 INFO L276 IsEmpty]: Start isEmpty. Operand 80393 states and 123214 transitions. [2021-11-07 14:48:08,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-07 14:48:08,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:48:08,367 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] [2021-11-07 14:48:08,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-07 14:48:08,583 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 [2021-11-07 14:48:08,584 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)] === [2021-11-07 14:48:08,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:48:08,584 INFO L85 PathProgramCache]: Analyzing trace with hash 646483409, now seen corresponding path program 1 times [2021-11-07 14:48:08,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:48:08,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246784350] [2021-11-07 14:48:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:48:08,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:48:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:48:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 6 proven. 100 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 14:48:08,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:48:08,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246784350] [2021-11-07 14:48:08,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246784350] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:48:08,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624990113] [2021-11-07 14:48:08,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:48:08,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:48:08,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:48:08,877 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) [2021-11-07 14:48:08,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 14:48:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:48:09,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 3120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 14:48:09,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:48:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 6 proven. 100 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 14:48:10,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 14:48:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 6 proven. 100 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 14:48:10,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624990113] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 14:48:10,790 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 14:48:10,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-07 14:48:10,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051081549] [2021-11-07 14:48:10,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 14:48:10,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 14:48:10,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:48:10,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 14:48:10,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-07 14:48:10,792 INFO L87 Difference]: Start difference. First operand 80393 states and 123214 transitions. Second operand has 25 states, 25 states have (on average 11.04) internal successors, (276), 25 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:48:11,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:48:11,953 INFO L93 Difference]: Finished difference Result 160806 states and 246510 transitions. [2021-11-07 14:48:11,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 14:48:11,954 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.04) internal successors, (276), 25 states have internal predecessors, (276), 0 states have call successors, (0), 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 251 [2021-11-07 14:48:11,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:48:12,138 INFO L225 Difference]: With dead ends: 160806 [2021-11-07 14:48:12,139 INFO L226 Difference]: Without dead ends: 80585 [2021-11-07 14:48:12,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 212.96ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-07 14:48:12,252 INFO L933 BasicCegarLoop]: 13809 mSDtfsCounter, 33 mSDsluCounter, 27612 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 41421 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.35ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.60ms IncrementalHoareTripleChecker+Time [2021-11-07 14:48:12,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 41421 Invalid, 65 Unknown, 0 Unchecked, 16.35ms Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 49.60ms Time] [2021-11-07 14:48:12,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80585 states. [2021-11-07 14:48:13,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80585 to 80585. [2021-11-07 14:48:13,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80585 states, 79531 states have (on average 1.5283348631351297) internal successors, (121550), 79604 states have internal predecessors, (121550), 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) [2021-11-07 14:48:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80585 states to 80585 states and 123406 transitions. [2021-11-07 14:48:13,883 INFO L78 Accepts]: Start accepts. Automaton has 80585 states and 123406 transitions. Word has length 251 [2021-11-07 14:48:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:48:13,884 INFO L470 AbstractCegarLoop]: Abstraction has 80585 states and 123406 transitions. [2021-11-07 14:48:13,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.04) internal successors, (276), 25 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:48:13,884 INFO L276 IsEmpty]: Start isEmpty. Operand 80585 states and 123406 transitions. [2021-11-07 14:48:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-07 14:48:13,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:48:13,890 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] [2021-11-07 14:48:13,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 14:48:14,103 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 [2021-11-07 14:48:14,104 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)] === [2021-11-07 14:48:14,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:48:14,104 INFO L85 PathProgramCache]: Analyzing trace with hash 550002305, now seen corresponding path program 2 times [2021-11-07 14:48:14,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:48:14,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954549516] [2021-11-07 14:48:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:48:14,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:48:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:48:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 6 proven. 484 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 14:48:14,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:48:14,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954549516] [2021-11-07 14:48:14,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954549516] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:48:14,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172380383] [2021-11-07 14:48:14,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 14:48:14,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:48:14,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:48:14,782 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) [2021-11-07 14:48:14,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 14:48:19,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 14:48:19,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 14:48:19,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 3192 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 14:48:19,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:48:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 6 proven. 484 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 14:48:19,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 14:48:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 6 proven. 484 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 14:48:20,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172380383] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 14:48:20,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 14:48:20,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2021-11-07 14:48:20,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436402430] [2021-11-07 14:48:20,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 14:48:20,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 14:48:20,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:48:20,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 14:48:20,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 14:48:20,555 INFO L87 Difference]: Start difference. First operand 80585 states and 123406 transitions. Second operand has 49 states, 49 states have (on average 6.612244897959184) internal successors, (324), 49 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:48:22,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:48:22,374 INFO L93 Difference]: Finished difference Result 161382 states and 247182 transitions. [2021-11-07 14:48:22,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 14:48:22,375 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.612244897959184) internal successors, (324), 49 states have internal predecessors, (324), 0 states have call successors, (0), 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 275 [2021-11-07 14:48:22,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:48:22,555 INFO L225 Difference]: With dead ends: 161382 [2021-11-07 14:48:22,556 INFO L226 Difference]: Without dead ends: 80969 [2021-11-07 14:48:22,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 829.52ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 14:48:22,638 INFO L933 BasicCegarLoop]: 13809 mSDtfsCounter, 46 mSDsluCounter, 110448 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 145.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 124257 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.50ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.71ms IncrementalHoareTripleChecker+Time [2021-11-07 14:48:22,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 124257 Invalid, 136 Unknown, 0 Unchecked, 47.50ms Time], IncrementalHoareTripleChecker [27 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 183.71ms Time] [2021-11-07 14:48:22,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80969 states. [2021-11-07 14:48:23,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80969 to 80969. [2021-11-07 14:48:23,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80969 states, 79915 states have (on average 1.5257961584183195) internal successors, (121934), 79988 states have internal predecessors, (121934), 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) [2021-11-07 14:48:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80969 states to 80969 states and 123790 transitions. [2021-11-07 14:48:23,948 INFO L78 Accepts]: Start accepts. Automaton has 80969 states and 123790 transitions. Word has length 275 [2021-11-07 14:48:23,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:48:23,948 INFO L470 AbstractCegarLoop]: Abstraction has 80969 states and 123790 transitions. [2021-11-07 14:48:23,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 6.612244897959184) internal successors, (324), 49 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:48:23,949 INFO L276 IsEmpty]: Start isEmpty. Operand 80969 states and 123790 transitions. [2021-11-07 14:48:23,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-11-07 14:48:23,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:48:23,955 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:48:23,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 14:48:24,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-07 14:48:24,168 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 14:48:24,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:48:24,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1983459359, now seen corresponding path program 3 times [2021-11-07 14:48:24,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:48:24,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260525086] [2021-11-07 14:48:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:48:24,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:48:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:48:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2156 backedges. 6 proven. 2116 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 14:48:26,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:48:26,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260525086] [2021-11-07 14:48:26,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260525086] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:48:26,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176904755] [2021-11-07 14:48:26,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 14:48:26,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:48:26,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:48:26,141 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:48:26,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 14:49:33,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 14:49:33,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 14:49:33,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 14:49:33,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:49:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2156 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2154 trivial. 0 not checked. [2021-11-07 14:49:34,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 14:49:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2156 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2155 trivial. 0 not checked. [2021-11-07 14:49:35,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176904755] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 14:49:35,087 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 14:49:35,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 5, 4] total 54 [2021-11-07 14:49:35,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288047254] [2021-11-07 14:49:35,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 14:49:35,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-07 14:49:35,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:49:35,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-07 14:49:35,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=1671, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 14:49:35,090 INFO L87 Difference]: Start difference. First operand 80969 states and 123790 transitions. Second operand has 54 states, 54 states have (on average 8.814814814814815) internal successors, (476), 54 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:49:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:49:41,672 INFO L93 Difference]: Finished difference Result 230040 states and 351968 transitions. [2021-11-07 14:49:41,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-07 14:49:41,672 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 8.814814814814815) internal successors, (476), 54 states have internal predecessors, (476), 0 states have call successors, (0), 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 323 [2021-11-07 14:49:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:49:42,000 INFO L225 Difference]: With dead ends: 230040 [2021-11-07 14:49:42,000 INFO L226 Difference]: Without dead ends: 149108 [2021-11-07 14:49:42,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 2910.76ms TimeCoverageRelationStatistics Valid=3554, Invalid=6952, Unknown=0, NotChecked=0, Total=10506 [2021-11-07 14:49:42,127 INFO L933 BasicCegarLoop]: 25447 mSDtfsCounter, 12155 mSDsluCounter, 267541 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2044.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12235 SdHoareTripleChecker+Valid, 292988 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 121.06ms SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2430.39ms IncrementalHoareTripleChecker+Time [2021-11-07 14:49:42,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12235 Valid, 292988 Invalid, 2032 Unknown, 0 Unchecked, 121.06ms Time], IncrementalHoareTripleChecker [320 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 2430.39ms Time] [2021-11-07 14:49:42,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149108 states. [2021-11-07 14:49:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149108 to 81083. [2021-11-07 14:49:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81083 states, 80029 states have (on average 1.5250471704007298) internal successors, (122048), 80102 states have internal predecessors, (122048), 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) [2021-11-07 14:49:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81083 states to 81083 states and 123904 transitions. [2021-11-07 14:49:43,880 INFO L78 Accepts]: Start accepts. Automaton has 81083 states and 123904 transitions. Word has length 323 [2021-11-07 14:49:43,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:49:43,880 INFO L470 AbstractCegarLoop]: Abstraction has 81083 states and 123904 transitions. [2021-11-07 14:49:43,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 8.814814814814815) internal successors, (476), 54 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:49:43,880 INFO L276 IsEmpty]: Start isEmpty. Operand 81083 states and 123904 transitions. [2021-11-07 14:49:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-11-07 14:49:43,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:49:43,887 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:49:43,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 14:49:44,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 14:49:44,088 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 14:49:44,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:49:44,089 INFO L85 PathProgramCache]: Analyzing trace with hash 531807559, now seen corresponding path program 4 times [2021-11-07 14:49:44,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:49:44,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939865879] [2021-11-07 14:49:44,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:49:44,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:49:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:49:45,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2541 backedges. 6 proven. 2209 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2021-11-07 14:49:45,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:49:45,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939865879] [2021-11-07 14:49:45,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939865879] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:49:45,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446212279] [2021-11-07 14:49:45,655 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 14:49:45,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:49:45,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:49:45,656 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:49:45,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process