./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/heap-manipulation/bubble_sort_linux-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash ea70fe63854da4e5982713e252f1eed95e7b26c9 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:56:04,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 01:56:04,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 01:56:04,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 01:56:04,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 01:56:04,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 01:56:04,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 01:56:04,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 01:56:04,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 01:56:04,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 01:56:04,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 01:56:04,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 01:56:04,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:56:04,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:56:04,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:56:04,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:56:04,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:56:04,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:56:04,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:56:04,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:56:04,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:56:04,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:56:04,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:56:04,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:56:04,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:56:04,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:56:04,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:56:04,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:56:04,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:56:04,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:56:04,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:56:04,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:56:04,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:56:04,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:56:04,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:56:04,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:56:04,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:56:04,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:56:04,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:56:04,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:56:04,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:56:04,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 01:56:04,564 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:56:04,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:56:04,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:56:04,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:56:04,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:56:04,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:56:04,567 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:56:04,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:56:04,567 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:56:04,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 01:56:04,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:56:04,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:56:04,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:56:04,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:56:04,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:56:04,569 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:56:04,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:56:04,569 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:56:04,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:56:04,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:56:04,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:56:04,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:56:04,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:56:04,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:56:04,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:56:04,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:56:04,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 01:56:04,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 01:56:04,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:56:04,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:56:04,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea70fe63854da4e5982713e252f1eed95e7b26c9 [2021-08-26 01:56:04,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:56:04,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:56:04,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:56:04,829 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:56:04,830 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:56:04,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2021-08-26 01:56:04,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7034405d6/d91d68393840489b96a43191e79a110f/FLAGf806a6126 [2021-08-26 01:56:05,261 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:56:05,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2021-08-26 01:56:05,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7034405d6/d91d68393840489b96a43191e79a110f/FLAGf806a6126 [2021-08-26 01:56:05,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7034405d6/d91d68393840489b96a43191e79a110f [2021-08-26 01:56:05,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:56:05,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:56:05,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:56:05,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:56:05,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:56:05,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:56:05" (1/1) ... [2021-08-26 01:56:05,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22948a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:56:05, skipping insertion in model container [2021-08-26 01:56:05,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:56:05" (1/1) ... [2021-08-26 01:56:05,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:56:05,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:56:05,581 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/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2021-08-26 01:56:05,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:56:05,616 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:56:05,641 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/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2021-08-26 01:56:05,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:56:05,690 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:56:05,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:56:05 WrapperNode [2021-08-26 01:56:05,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:56:05,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:56:05,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:56:05,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:56:05,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:56:05" (1/1) ... [2021-08-26 01:56:05,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:56:05" (1/1) ... [2021-08-26 01:56:05,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:56:05,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:56:05,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:56:05,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:56:05,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:56:05" (1/1) ... [2021-08-26 01:56:05,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:56:05" (1/1) ... [2021-08-26 01:56:05,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:56:05" (1/1) ... [2021-08-26 01:56:05,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:56:05" (1/1) ... [2021-08-26 01:56:05,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:56:05" (1/1) ... [2021-08-26 01:56:05,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:56:05" (1/1) ... [2021-08-26 01:56:05,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:56:05" (1/1) ... [2021-08-26 01:56:05,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:56:05,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:56:05,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:56:05,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:56:05,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:56:05" (1/1) ... [2021-08-26 01:56:05,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:56:05,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:56:05,784 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) [2021-08-26 01:56:05,794 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 [2021-08-26 01:56:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:56:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 01:56:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:56:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-26 01:56:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 01:56:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 01:56:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-26 01:56:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-26 01:56:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 01:56:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:56:05,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:56:06,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:56:06,408 INFO L299 CfgBuilder]: Removed 178 assume(true) statements. [2021-08-26 01:56:06,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:56:06 BoogieIcfgContainer [2021-08-26 01:56:06,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:56:06,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:56:06,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:56:06,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:56:06,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:56:05" (1/3) ... [2021-08-26 01:56:06,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c126f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:56:06, skipping insertion in model container [2021-08-26 01:56:06,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:56:05" (2/3) ... [2021-08-26 01:56:06,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c126f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:56:06, skipping insertion in model container [2021-08-26 01:56:06,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:56:06" (3/3) ... [2021-08-26 01:56:06,420 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2021-08-26 01:56:06,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:56:06,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2021-08-26 01:56:06,449 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:56:06,453 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-26 01:56:06,453 INFO L340 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2021-08-26 01:56:06,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 164 states have (on average 1.9268292682926829) internal successors, (316), 198 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:06,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 01:56:06,466 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:56:06,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 01:56:06,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-08-26 01:56:06,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:56:06,470 INFO L82 PathProgramCache]: Analyzing trace with hash 890522695, now seen corresponding path program 1 times [2021-08-26 01:56:06,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:56:06,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12837810] [2021-08-26 01:56:06,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:56:06,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:56:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:56:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:56:06,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:56:06,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12837810] [2021-08-26 01:56:06,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12837810] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:56:06,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:56:06,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 01:56:06,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869530558] [2021-08-26 01:56:06,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:56:06,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:56:06,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:56:06,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:56:06,571 INFO L87 Difference]: Start difference. First operand has 199 states, 164 states have (on average 1.9268292682926829) internal successors, (316), 198 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:06,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:56:06,590 INFO L93 Difference]: Finished difference Result 388 states and 622 transitions. [2021-08-26 01:56:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:56:06,598 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-08-26 01:56:06,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:56:06,604 INFO L225 Difference]: With dead ends: 388 [2021-08-26 01:56:06,604 INFO L226 Difference]: Without dead ends: 183 [2021-08-26 01:56:06,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:56:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-08-26 01:56:06,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-08-26 01:56:06,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 153 states have (on average 1.2287581699346406) internal successors, (188), 182 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 188 transitions. [2021-08-26 01:56:06,631 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 188 transitions. Word has length 6 [2021-08-26 01:56:06,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:56:06,631 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 188 transitions. [2021-08-26 01:56:06,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 188 transitions. [2021-08-26 01:56:06,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 01:56:06,632 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:56:06,632 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:56:06,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 01:56:06,633 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-08-26 01:56:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:56:06,633 INFO L82 PathProgramCache]: Analyzing trace with hash 688572440, now seen corresponding path program 1 times [2021-08-26 01:56:06,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:56:06,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005110461] [2021-08-26 01:56:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:56:06,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:56:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:56:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:56:06,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:56:06,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005110461] [2021-08-26 01:56:06,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005110461] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:56:06,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:56:06,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 01:56:06,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647114530] [2021-08-26 01:56:06,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 01:56:06,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:56:06,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 01:56:06,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 01:56:06,704 INFO L87 Difference]: Start difference. First operand 183 states and 188 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:06,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:56:06,852 INFO L93 Difference]: Finished difference Result 183 states and 188 transitions. [2021-08-26 01:56:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 01:56:06,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-08-26 01:56:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:56:06,854 INFO L225 Difference]: With dead ends: 183 [2021-08-26 01:56:06,854 INFO L226 Difference]: Without dead ends: 179 [2021-08-26 01:56:06,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 01:56:06,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-08-26 01:56:06,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-08-26 01:56:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 151 states have (on average 1.218543046357616) internal successors, (184), 178 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 184 transitions. [2021-08-26 01:56:06,861 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 184 transitions. Word has length 14 [2021-08-26 01:56:06,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:56:06,861 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 184 transitions. [2021-08-26 01:56:06,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 184 transitions. [2021-08-26 01:56:06,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 01:56:06,862 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:56:06,862 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:56:06,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 01:56:06,862 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-08-26 01:56:06,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:56:06,863 INFO L82 PathProgramCache]: Analyzing trace with hash 503596455, now seen corresponding path program 1 times [2021-08-26 01:56:06,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:56:06,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579195921] [2021-08-26 01:56:06,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:56:06,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:56:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:56:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:56:06,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:56:06,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579195921] [2021-08-26 01:56:06,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579195921] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:56:06,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:56:06,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 01:56:06,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608799244] [2021-08-26 01:56:06,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 01:56:06,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:56:06,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 01:56:06,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-26 01:56:06,977 INFO L87 Difference]: Start difference. First operand 179 states and 184 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:07,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:56:07,504 INFO L93 Difference]: Finished difference Result 269 states and 277 transitions. [2021-08-26 01:56:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 01:56:07,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-08-26 01:56:07,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:56:07,506 INFO L225 Difference]: With dead ends: 269 [2021-08-26 01:56:07,506 INFO L226 Difference]: Without dead ends: 265 [2021-08-26 01:56:07,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 100.1ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-08-26 01:56:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-08-26 01:56:07,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 192. [2021-08-26 01:56:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 165 states have (on average 1.2121212121212122) internal successors, (200), 191 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 200 transitions. [2021-08-26 01:56:07,515 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 200 transitions. Word has length 17 [2021-08-26 01:56:07,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:56:07,515 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 200 transitions. [2021-08-26 01:56:07,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:07,515 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 200 transitions. [2021-08-26 01:56:07,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 01:56:07,516 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:56:07,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:56:07,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 01:56:07,516 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-08-26 01:56:07,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:56:07,517 INFO L82 PathProgramCache]: Analyzing trace with hash 327087948, now seen corresponding path program 1 times [2021-08-26 01:56:07,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:56:07,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041852436] [2021-08-26 01:56:07,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:56:07,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:56:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:56:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:56:07,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:56:07,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041852436] [2021-08-26 01:56:07,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041852436] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:56:07,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:56:07,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 01:56:07,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95158793] [2021-08-26 01:56:07,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 01:56:07,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:56:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 01:56:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-26 01:56:07,715 INFO L87 Difference]: Start difference. First operand 192 states and 200 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:08,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:56:08,238 INFO L93 Difference]: Finished difference Result 366 states and 379 transitions. [2021-08-26 01:56:08,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 01:56:08,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-08-26 01:56:08,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:56:08,239 INFO L225 Difference]: With dead ends: 366 [2021-08-26 01:56:08,239 INFO L226 Difference]: Without dead ends: 362 [2021-08-26 01:56:08,240 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-26 01:56:08,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-08-26 01:56:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 270. [2021-08-26 01:56:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 243 states have (on average 1.213991769547325) internal successors, (295), 269 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:08,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2021-08-26 01:56:08,248 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 20 [2021-08-26 01:56:08,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:56:08,248 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2021-08-26 01:56:08,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:08,248 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2021-08-26 01:56:08,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-26 01:56:08,249 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:56:08,249 INFO L512 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] [2021-08-26 01:56:08,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 01:56:08,249 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-08-26 01:56:08,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:56:08,250 INFO L82 PathProgramCache]: Analyzing trace with hash -997855815, now seen corresponding path program 1 times [2021-08-26 01:56:08,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:56:08,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686872676] [2021-08-26 01:56:08,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:56:08,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:56:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:56:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:56:08,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:56:08,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686872676] [2021-08-26 01:56:08,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686872676] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:56:08,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:56:08,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 01:56:08,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057796473] [2021-08-26 01:56:08,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 01:56:08,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:56:08,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 01:56:08,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-26 01:56:08,440 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:56:09,022 INFO L93 Difference]: Finished difference Result 362 states and 375 transitions. [2021-08-26 01:56:09,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 01:56:09,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-08-26 01:56:09,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:56:09,023 INFO L225 Difference]: With dead ends: 362 [2021-08-26 01:56:09,024 INFO L226 Difference]: Without dead ends: 358 [2021-08-26 01:56:09,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 145.3ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-08-26 01:56:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-08-26 01:56:09,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 273. [2021-08-26 01:56:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 246 states have (on average 1.2073170731707317) internal successors, (297), 272 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 297 transitions. [2021-08-26 01:56:09,031 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 297 transitions. Word has length 23 [2021-08-26 01:56:09,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:56:09,031 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 297 transitions. [2021-08-26 01:56:09,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:09,031 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 297 transitions. [2021-08-26 01:56:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 01:56:09,032 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:56:09,032 INFO L512 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] [2021-08-26 01:56:09,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 01:56:09,032 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-08-26 01:56:09,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:56:09,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1648026365, now seen corresponding path program 1 times [2021-08-26 01:56:09,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:56:09,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834275781] [2021-08-26 01:56:09,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:56:09,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:56:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:56:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:56:09,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:56:09,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834275781] [2021-08-26 01:56:09,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834275781] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:56:09,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:56:09,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-26 01:56:09,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729285686] [2021-08-26 01:56:09,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 01:56:09,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:56:09,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 01:56:09,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-26 01:56:09,227 INFO L87 Difference]: Start difference. First operand 273 states and 297 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:56:09,997 INFO L93 Difference]: Finished difference Result 358 states and 371 transitions. [2021-08-26 01:56:09,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 01:56:09,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-08-26 01:56:09,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:56:09,999 INFO L225 Difference]: With dead ends: 358 [2021-08-26 01:56:09,999 INFO L226 Difference]: Without dead ends: 354 [2021-08-26 01:56:10,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 170.2ms TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-08-26 01:56:10,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-08-26 01:56:10,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 276. [2021-08-26 01:56:10,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 249 states have (on average 1.2008032128514057) internal successors, (299), 275 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 299 transitions. [2021-08-26 01:56:10,007 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 299 transitions. Word has length 26 [2021-08-26 01:56:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:56:10,008 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 299 transitions. [2021-08-26 01:56:10,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 299 transitions. [2021-08-26 01:56:10,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 01:56:10,008 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:56:10,009 INFO L512 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] [2021-08-26 01:56:10,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-26 01:56:10,009 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-08-26 01:56:10,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:56:10,009 INFO L82 PathProgramCache]: Analyzing trace with hash -576356595, now seen corresponding path program 1 times [2021-08-26 01:56:10,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:56:10,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810288904] [2021-08-26 01:56:10,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:56:10,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:56:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:56:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:56:10,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:56:10,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810288904] [2021-08-26 01:56:10,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810288904] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:56:10,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:56:10,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-26 01:56:10,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332799307] [2021-08-26 01:56:10,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 01:56:10,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:56:10,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 01:56:10,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-26 01:56:10,284 INFO L87 Difference]: Start difference. First operand 276 states and 299 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:11,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:56:11,097 INFO L93 Difference]: Finished difference Result 354 states and 367 transitions. [2021-08-26 01:56:11,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 01:56:11,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-08-26 01:56:11,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:56:11,100 INFO L225 Difference]: With dead ends: 354 [2021-08-26 01:56:11,100 INFO L226 Difference]: Without dead ends: 350 [2021-08-26 01:56:11,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 218.7ms TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-08-26 01:56:11,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-08-26 01:56:11,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 279. [2021-08-26 01:56:11,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 252 states have (on average 1.1944444444444444) internal successors, (301), 278 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:11,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 301 transitions. [2021-08-26 01:56:11,122 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 301 transitions. Word has length 29 [2021-08-26 01:56:11,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:56:11,122 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 301 transitions. [2021-08-26 01:56:11,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:56:11,123 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 301 transitions. [2021-08-26 01:56:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 01:56:11,123 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:56:11,123 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:56:11,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-26 01:56:11,123 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-08-26 01:56:11,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:56:11,124 INFO L82 PathProgramCache]: Analyzing trace with hash 49558493, now seen corresponding path program 1 times [2021-08-26 01:56:11,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:56:11,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99765662] [2021-08-26 01:56:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:56:11,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:56:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:56:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:56:11,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:56:11,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99765662] [2021-08-26 01:56:11,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99765662] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 01:56:11,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363863435] [2021-08-26 01:56:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:56:11,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 01:56:11,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:56:11,581 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) [2021-08-26 01:56:11,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 01:56:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:56:12,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 86 conjunts are in the unsatisfiable core [2021-08-26 01:56:12,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:56:12,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:56:12,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:56:12,416 INFO L354 Elim1Store]: treesize reduction 343, result has 13.6 percent of original size [2021-08-26 01:56:12,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 230 treesize of output 92 [2021-08-26 01:56:12,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:56:12,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 80 [2021-08-26 01:56:12,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:56:12,680 INFO L354 Elim1Store]: treesize reduction 170, result has 23.8 percent of original size [2021-08-26 01:56:12,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 61 treesize of output 80 [2021-08-26 01:56:16,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:56:16,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:56:16,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:56:16,882 INFO L354 Elim1Store]: treesize reduction 1082, result has 17.2 percent of original size [2021-08-26 01:56:16,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 271 treesize of output 277 [2021-08-26 01:57:01,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-26 01:57:01,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 01:57:01,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 01:57:01,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079841078] [2021-08-26 01:57:01,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 01:57:01,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:57:01,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 01:57:01,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-08-26 01:57:01,919 INFO L87 Difference]: Start difference. First operand 279 states and 301 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:02,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:57:02,839 INFO L93 Difference]: Finished difference Result 349 states and 371 transitions. [2021-08-26 01:57:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 01:57:02,839 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-08-26 01:57:02,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:57:02,844 INFO L225 Difference]: With dead ends: 349 [2021-08-26 01:57:02,844 INFO L226 Difference]: Without dead ends: 345 [2021-08-26 01:57:02,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 469.9ms TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-08-26 01:57:02,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-08-26 01:57:02,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 280. [2021-08-26 01:57:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 254 states have (on average 1.188976377952756) internal successors, (302), 279 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:02,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 302 transitions. [2021-08-26 01:57:02,866 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 302 transitions. Word has length 29 [2021-08-26 01:57:02,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:57:02,867 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 302 transitions. [2021-08-26 01:57:02,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:02,867 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 302 transitions. [2021-08-26 01:57:02,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-26 01:57:02,872 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:57:02,873 INFO L512 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] [2021-08-26 01:57:02,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 01:57:03,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 01:57:03,089 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-08-26 01:57:03,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:57:03,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1045868277, now seen corresponding path program 1 times [2021-08-26 01:57:03,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:57:03,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803171031] [2021-08-26 01:57:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:57:03,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:57:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:57:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:57:03,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:57:03,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803171031] [2021-08-26 01:57:03,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803171031] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:57:03,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:57:03,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-26 01:57:03,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182141912] [2021-08-26 01:57:03,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 01:57:03,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:57:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 01:57:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-08-26 01:57:03,466 INFO L87 Difference]: Start difference. First operand 280 states and 302 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:04,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:57:04,592 INFO L93 Difference]: Finished difference Result 351 states and 364 transitions. [2021-08-26 01:57:04,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 01:57:04,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-08-26 01:57:04,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:57:04,594 INFO L225 Difference]: With dead ends: 351 [2021-08-26 01:57:04,594 INFO L226 Difference]: Without dead ends: 347 [2021-08-26 01:57:04,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 263.3ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-08-26 01:57:04,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-08-26 01:57:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 283. [2021-08-26 01:57:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 257 states have (on average 1.1828793774319066) internal successors, (304), 282 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:04,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 304 transitions. [2021-08-26 01:57:04,625 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 304 transitions. Word has length 32 [2021-08-26 01:57:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:57:04,625 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 304 transitions. [2021-08-26 01:57:04,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 304 transitions. [2021-08-26 01:57:04,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-26 01:57:04,626 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:57:04,626 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:57:04,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-26 01:57:04,626 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-08-26 01:57:04,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:57:04,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1065804920, now seen corresponding path program 1 times [2021-08-26 01:57:04,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:57:04,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506758816] [2021-08-26 01:57:04,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:57:04,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:57:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:57:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:57:05,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:57:05,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506758816] [2021-08-26 01:57:05,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506758816] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 01:57:05,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342750751] [2021-08-26 01:57:05,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:57:05,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 01:57:05,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:57:05,263 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) [2021-08-26 01:57:05,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 01:57:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:57:05,832 WARN L261 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 118 conjunts are in the unsatisfiable core [2021-08-26 01:57:05,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:57:06,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:06,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:06,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:06,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:06,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:06,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:06,264 INFO L354 Elim1Store]: treesize reduction 183, result has 14.1 percent of original size [2021-08-26 01:57:06,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 325 treesize of output 155 [2021-08-26 01:57:06,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:06,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:06,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:06,306 INFO L354 Elim1Store]: treesize reduction 200, result has 7.8 percent of original size [2021-08-26 01:57:06,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 193 treesize of output 98 [2021-08-26 01:57:06,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:06,709 INFO L354 Elim1Store]: treesize reduction 350, result has 12.1 percent of original size [2021-08-26 01:57:06,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 231 treesize of output 175 [2021-08-26 01:57:06,779 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-08-26 01:57:06,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 199 treesize of output 159 [2021-08-26 01:57:07,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:07,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:07,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:07,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 01:57:07,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:07,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:08,483 INFO L354 Elim1Store]: treesize reduction 1515, result has 7.6 percent of original size [2021-08-26 01:57:08,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 519 treesize of output 371 [2021-08-26 01:57:08,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:08,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:08,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:08,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:08,952 INFO L354 Elim1Store]: treesize reduction 1915, result has 10.0 percent of original size [2021-08-26 01:57:08,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 16 case distinctions, treesize of input 679 treesize of output 538 [2021-08-26 01:57:09,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:09,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:09,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 01:57:10,180 INFO L354 Elim1Store]: treesize reduction 608, result has 12.9 percent of original size [2021-08-26 01:57:10,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 15 new quantified variables, introduced 44 case distinctions, treesize of input 800 treesize of output 511 [2021-08-26 01:57:10,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:10,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:10,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-26 01:57:10,480 INFO L354 Elim1Store]: treesize reduction 722, result has 12.0 percent of original size [2021-08-26 01:57:10,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 44 case distinctions, treesize of input 864 treesize of output 529 [2021-08-26 01:57:19,066 INFO L354 Elim1Store]: treesize reduction 474, result has 13.7 percent of original size [2021-08-26 01:57:19,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 45 case distinctions, treesize of input 875 treesize of output 497 [2021-08-26 01:57:19,302 INFO L354 Elim1Store]: treesize reduction 336, result has 17.0 percent of original size [2021-08-26 01:57:19,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 15 new quantified variables, introduced 45 case distinctions, treesize of input 512 treesize of output 355 [2021-08-26 01:57:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:57:26,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342750751] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 01:57:26,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 01:57:26,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-08-26 01:57:26,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851957714] [2021-08-26 01:57:26,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-26 01:57:26,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:57:26,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-26 01:57:26,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-08-26 01:57:26,573 INFO L87 Difference]: Start difference. First operand 283 states and 304 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:32,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:57:32,660 INFO L93 Difference]: Finished difference Result 575 states and 595 transitions. [2021-08-26 01:57:32,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-26 01:57:32,661 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 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 32 [2021-08-26 01:57:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:57:32,663 INFO L225 Difference]: With dead ends: 575 [2021-08-26 01:57:32,663 INFO L226 Difference]: Without dead ends: 571 [2021-08-26 01:57:32,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 4183.9ms TimeCoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2021-08-26 01:57:32,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-08-26 01:57:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 284. [2021-08-26 01:57:32,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 259 states have (on average 1.1776061776061777) internal successors, (305), 283 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 305 transitions. [2021-08-26 01:57:32,677 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 305 transitions. Word has length 32 [2021-08-26 01:57:32,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:57:32,677 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 305 transitions. [2021-08-26 01:57:32,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 305 transitions. [2021-08-26 01:57:32,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-26 01:57:32,678 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:57:32,678 INFO L512 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] [2021-08-26 01:57:32,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-26 01:57:32,897 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,SelfDestructingSolverStorable9 [2021-08-26 01:57:32,897 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-08-26 01:57:32,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:57:32,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1775038180, now seen corresponding path program 1 times [2021-08-26 01:57:32,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:57:32,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100991718] [2021-08-26 01:57:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:57:32,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:57:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:57:33,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:57:33,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:57:33,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100991718] [2021-08-26 01:57:33,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100991718] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:57:33,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:57:33,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-26 01:57:33,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902986556] [2021-08-26 01:57:33,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 01:57:33,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:57:33,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 01:57:33,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-26 01:57:33,161 INFO L87 Difference]: Start difference. First operand 284 states and 305 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:34,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:57:34,391 INFO L93 Difference]: Finished difference Result 348 states and 361 transitions. [2021-08-26 01:57:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 01:57:34,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-08-26 01:57:34,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:57:34,393 INFO L225 Difference]: With dead ends: 348 [2021-08-26 01:57:34,393 INFO L226 Difference]: Without dead ends: 344 [2021-08-26 01:57:34,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 384.6ms TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-08-26 01:57:34,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-08-26 01:57:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 287. [2021-08-26 01:57:34,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 262 states have (on average 1.1717557251908397) internal successors, (307), 286 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 307 transitions. [2021-08-26 01:57:34,405 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 307 transitions. Word has length 35 [2021-08-26 01:57:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:57:34,405 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 307 transitions. [2021-08-26 01:57:34,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:34,406 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 307 transitions. [2021-08-26 01:57:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-26 01:57:34,406 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:57:34,406 INFO L512 BasicCegarLoop]: trace histogram [2, 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] [2021-08-26 01:57:34,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-26 01:57:34,406 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-08-26 01:57:34,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:57:34,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1304750292, now seen corresponding path program 1 times [2021-08-26 01:57:34,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:57:34,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996836039] [2021-08-26 01:57:34,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:57:34,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:57:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:57:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:57:34,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:57:34,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996836039] [2021-08-26 01:57:34,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996836039] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 01:57:34,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311410996] [2021-08-26 01:57:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:57:34,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 01:57:34,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:57:34,822 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) [2021-08-26 01:57:34,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 01:57:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:57:35,998 WARN L261 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 133 conjunts are in the unsatisfiable core [2021-08-26 01:57:36,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:57:36,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-26 01:57:36,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:36,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:36,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:36,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:36,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:36,294 INFO L354 Elim1Store]: treesize reduction 209, result has 9.1 percent of original size [2021-08-26 01:57:36,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 378 treesize of output 189 [2021-08-26 01:57:36,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:36,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:36,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:36,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:36,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:36,345 INFO L354 Elim1Store]: treesize reduction 213, result has 9.7 percent of original size [2021-08-26 01:57:36,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 279 treesize of output 98 [2021-08-26 01:57:36,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:36,598 INFO L354 Elim1Store]: treesize reduction 254, result has 13.9 percent of original size [2021-08-26 01:57:36,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 198 treesize of output 144 [2021-08-26 01:57:36,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:36,657 INFO L354 Elim1Store]: treesize reduction 194, result has 16.7 percent of original size [2021-08-26 01:57:36,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 166 treesize of output 147 [2021-08-26 01:57:37,132 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-26 01:57:37,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-08-26 01:57:37,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:37,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:37,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:37,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:37,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:37,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:37,719 INFO L354 Elim1Store]: treesize reduction 1329, result has 5.7 percent of original size [2021-08-26 01:57:37,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 489 treesize of output 306 [2021-08-26 01:57:37,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:37,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:37,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:37,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:37,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:37,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:38,025 INFO L354 Elim1Store]: treesize reduction 1417, result has 5.7 percent of original size [2021-08-26 01:57:38,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 438 treesize of output 271 [2021-08-26 01:57:38,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:38,652 INFO L354 Elim1Store]: treesize reduction 906, result has 9.1 percent of original size [2021-08-26 01:57:38,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 36 case distinctions, treesize of input 523 treesize of output 368 [2021-08-26 01:57:38,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 01:57:38,880 INFO L354 Elim1Store]: treesize reduction 778, result has 10.5 percent of original size [2021-08-26 01:57:38,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 36 case distinctions, treesize of input 455 treesize of output 316 [2021-08-26 01:57:41,210 INFO L354 Elim1Store]: treesize reduction 612, result has 4.5 percent of original size [2021-08-26 01:57:41,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 413 treesize of output 282 [2021-08-26 01:57:43,620 INFO L354 Elim1Store]: treesize reduction 453, result has 5.0 percent of original size [2021-08-26 01:57:43,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 17 new quantified variables, introduced 45 case distinctions, treesize of input 184 treesize of output 112 [2021-08-26 01:57:43,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:57:43,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311410996] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 01:57:43,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 01:57:43,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-08-26 01:57:43,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943767826] [2021-08-26 01:57:43,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-26 01:57:43,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:57:43,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-26 01:57:43,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2021-08-26 01:57:43,685 INFO L87 Difference]: Start difference. First operand 287 states and 307 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:57:48,311 INFO L93 Difference]: Finished difference Result 507 states and 525 transitions. [2021-08-26 01:57:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-26 01:57:48,311 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 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 35 [2021-08-26 01:57:48,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:57:48,313 INFO L225 Difference]: With dead ends: 507 [2021-08-26 01:57:48,313 INFO L226 Difference]: Without dead ends: 503 [2021-08-26 01:57:48,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3062.7ms TimeCoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2021-08-26 01:57:48,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-08-26 01:57:48,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 371. [2021-08-26 01:57:48,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 346 states have (on average 1.1734104046242775) internal successors, (406), 370 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 406 transitions. [2021-08-26 01:57:48,330 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 406 transitions. Word has length 35 [2021-08-26 01:57:48,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:57:48,330 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 406 transitions. [2021-08-26 01:57:48,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:57:48,330 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 406 transitions. [2021-08-26 01:57:48,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-26 01:57:48,331 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:57:48,331 INFO L512 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] [2021-08-26 01:57:48,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 01:57:48,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 01:57:48,551 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-08-26 01:57:48,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:57:48,551 INFO L82 PathProgramCache]: Analyzing trace with hash 531055145, now seen corresponding path program 1 times [2021-08-26 01:57:48,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:57:48,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218995992] [2021-08-26 01:57:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:57:48,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:57:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:57:48,572 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 01:57:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:57:48,609 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 01:57:48,609 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 01:57:48,610 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,611 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,615 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,616 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:57:48,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-26 01:57:48,621 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:57:48,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:57:48 BoogieIcfgContainer [2021-08-26 01:57:48,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:57:48,663 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:57:48,663 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:57:48,663 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:57:48,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:56:06" (3/4) ... [2021-08-26 01:57:48,664 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 01:57:48,702 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 01:57:48,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:57:48,703 INFO L168 Benchmark]: Toolchain (without parser) took 103406.31 ms. Allocated memory was 54.5 MB in the beginning and 1.0 GB in the end (delta: 962.6 MB). Free memory was 35.4 MB in the beginning and 907.9 MB in the end (delta: -872.5 MB). Peak memory consumption was 88.7 MB. Max. memory is 16.1 GB. [2021-08-26 01:57:48,704 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 44.0 MB. Free memory was 26.2 MB in the beginning and 26.2 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:57:48,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.79 ms. Allocated memory is still 54.5 MB. Free memory was 35.2 MB in the beginning and 34.2 MB in the end (delta: 982.7 kB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2021-08-26 01:57:48,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.97 ms. Allocated memory is still 54.5 MB. Free memory was 34.0 MB in the beginning and 30.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:57:48,705 INFO L168 Benchmark]: Boogie Preprocessor took 37.09 ms. Allocated memory is still 54.5 MB. Free memory was 30.4 MB in the beginning and 26.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 01:57:48,705 INFO L168 Benchmark]: RCFGBuilder took 643.20 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.5 MB in the beginning and 28.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-08-26 01:57:48,705 INFO L168 Benchmark]: TraceAbstraction took 102246.31 ms. Allocated memory was 67.1 MB in the beginning and 1.0 GB in the end (delta: 950.0 MB). Free memory was 44.5 MB in the beginning and 913.2 MB in the end (delta: -868.7 MB). Peak memory consumption was 80.6 MB. Max. memory is 16.1 GB. [2021-08-26 01:57:48,705 INFO L168 Benchmark]: Witness Printer took 39.24 ms. Allocated memory is still 1.0 GB. Free memory was 913.2 MB in the beginning and 907.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 01:57:48,707 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 44.0 MB. Free memory was 26.2 MB in the beginning and 26.2 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 392.79 ms. Allocated memory is still 54.5 MB. Free memory was 35.2 MB in the beginning and 34.2 MB in the end (delta: 982.7 kB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.97 ms. Allocated memory is still 54.5 MB. Free memory was 34.0 MB in the beginning and 30.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.09 ms. Allocated memory is still 54.5 MB. Free memory was 30.4 MB in the beginning and 26.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 643.20 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.5 MB in the beginning and 28.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 102246.31 ms. Allocated memory was 67.1 MB in the beginning and 1.0 GB in the end (delta: 950.0 MB). Free memory was 44.5 MB in the beginning and 913.2 MB in the end (delta: -868.7 MB). Peak memory consumption was 80.6 MB. Max. memory is 16.1 GB. * Witness Printer took 39.24 ms. Allocated memory is still 1.0 GB. Free memory was 913.2 MB in the beginning and 907.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 840]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L850] struct list_head gl_list = { &(gl_list), &(gl_list) }; VAL [gl_list={6:0}] [L899] struct node *node = malloc(sizeof *node); [L900] COND FALSE !(!node) VAL [gl_list={6:0}] [L902] node->value = value [L890] head->next [L878] next->prev = new [L879] new->next = next [L880] new->prev = prev [L881] prev->next = new VAL [gl_list={6:0}] [L904] (&node->nested)->next = (&node->nested) [L904] (&node->nested)->next = (&node->nested) VAL [gl_list={6:0}] [L911] COND FALSE !(__VERIFIER_nondet_int()) [L853] COND FALSE !(!(head)) VAL [gl_list={6:0}] [L854] EXPR head->next VAL [gl_list={6:0}] [L854] COND FALSE !(!(head->next != head)) [L855] EXPR head->prev VAL [gl_list={6:0}] [L855] COND FALSE !(!(head->prev != head)) [L856] EXPR head->prev [L856] head = head->prev [L857] COND FALSE !(!(head)) VAL [gl_list={6:0}] [L858] EXPR head->next VAL [gl_list={6:0}] [L858] COND FALSE !(!(head->next != head)) [L859] EXPR head->prev VAL [gl_list={6:0}] [L859] COND FALSE !(!(head->prev != head)) [L860] const struct node *node = ((struct node *)((char *)(head)-(unsigned long)(&((struct node *)0)->linkage))); VAL [gl_list={6:0}] [L861] COND FALSE !(!(node)) VAL [gl_list={6:0}] [L862] EXPR node->nested.next VAL [gl_list={6:0}] [L862] COND FALSE !(!(node->nested.next == &node->nested)) [L863] EXPR node->nested.prev VAL [gl_list={6:0}] [L863] COND TRUE !(node->nested.prev == &node->nested) [L840] reach_error() VAL [gl_list={6:0}] - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 840]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 199 locations, 34 error locations. Started 1 CEGAR loops. OverallTime: 102170.5ms, OverallIterations: 13, TraceHistogramMax: 2, EmptinessCheckTime: 14.7ms, AutomataDifference: 17439.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1739 SDtfs, 6482 SDslu, 10819 SDs, 0 SdLazy, 7310 SolverSat, 299 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9111.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 231 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 9140.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=371occurred in iteration=12, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 165.6ms AutomataMinimizationTime, 12 MinimizatonAttempts, 1004 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 74.8ms SsaConstructionTime, 922.3ms SatisfiabilityAnalysisTime, 31134.1ms InterpolantComputationTime, 403 NumberOfCodeBlocks, 403 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 351 ConstructedInterpolants, 17 QuantifiedInterpolants, 31714 SizeOfPredicates, 111 NumberOfNonLiveVariables, 458 ConjunctsInSsa, 251 ConjunctsInUnsatCore, 14 InterpolantComputations, 9 PerfectInterpolantSequences, 0/45 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-26 01:57:48,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...